NLN NEX Science Practice Test

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• Which cellular structure is essential for protection of the cell, the maintenance of the shape, and water balance?
• Which organelle is named for having ribosomes on its surface and stores and delivers proteins made by the attached ribosomes?
• Which cells in the retina are responsible for color vision?
• Which term describes the sense of smell?
• Carry impulses from interneurons to skeletal and visceral muscles and glands
• Nonmetals are primarily located on which side of the periodic table?
• Which type of bond forms when electrons are transferred between atoms?
• Which cells in the testes produce testosterone?
• Which structure within the inner ear is primarily responsible for hearing?
• What describes a compound?
• Which muscle type is found in internal organs and is involuntary?
• Which health dimension is described as finding purpose in life through relationships with self, others, nature, and God?
• Which type of bond involves unequal sharing of electrons?
• Which term describes the variable that changes in response to the independent variable?
• Which term refers to the part of the ear that contains the cochlea and other structures responsible for hearing?
• Which term provides evidence supporting the theory of evolution; consists of remnants or traces of organisms from past geologic ages?
• Which bone is the smallest middle ear bone and transmits vibrations to the inner ear?
• Which trophic level includes carnivores that eat other carnivores or omnivores?
• Which structure serves as a common passage for semen and urine in males?
• Which type of respiration does not require oxygen?
• Which term refers to the scientific names of organisms?
• Which condition occurs when the solute outside the cell is higher than inside?
• Where does the right ventricle pump blood into?
• Which organ is the female reproductive organ that houses the developing fetus?
• Which cells work best in bright light and enable color vision?
• The digestive fluid containing acid and proteases is produced by which organ?
• Which process uses oxygen to release energy from nutrients?
• What is the purpose of staining specimens when using a compound microscope?
• Which term refers to the overall process by which species change over time due to variation and selection?
• Which of the following are the digestive system's accessory organs?
• Which part collects sounds and transmits them to the tympanic membrane?
• What is the term for the state where the rate of the forward reaction equals the rate of the reverse reaction?
• What is the functional unit of the nervous system?
• Which term best describes a mixture where components are not uniformly distributed and can be distinguished visually?
• In the lungs, the blood becomes oxygenated through gas exchange.
• Which term describes organisms that produce their own food from inorganic substances?
• Which term refers to a diagram that shows valence electrons as dots around the element symbol?
• What is the inner lining of the uterus called?
• Which feature of the axon helps transmit impulses faster?
• What is the highest level of biological organization in the human body?
• How many major subdivisions does the nervous system have?
• Which sense allows differentiation among various touches and supports the development of fine motor skills?
• Which reaction involves two ionic compounds exchanging partners to form new products?
• Which term describes the comparison of organisms' embryos?
• What is the cup-shaped structure that encloses the glomerulus and where filtration occurs?
• In a chemical equation, the substances on the left are called what?
• Which organ stores bile?
• Threadlike structures made of DNA that contain the genes (rod-shaped bodies) are called
• The atomic number is defined as:
• The structure that receives the pollen and consists of the stigma is the?
• Which of the following is NOT an accessory organ of the digestive system?
• The path along which food energy moves from producers to consumers is called what?
• Path sequence describing the order from production to exit for sperm
• What describes a mixture?
• Which term describes health focused on groups of people who share common characteristics?
• Where chyme is released from the stomach into which organ?
• Which term describes the point at which the concentrations of reactants and products no longer change over time in a reaction?
• The thick fleshy protective layer that surrounds the seed inside mature fruits is called which?
• Within a cell, genes are located on which structure?
• Which organ releases enzymes for digestion, including amylase and proteases?
• Which biome is characterized by very cold temperatures and high altitude, where shrubs and bushes grow but no trees?
• Which principle states that genes on different chromosomes are inherited independently of one another?
• Branches at the end of the axon are called
• Which statement describes the noble gases' position on the periodic table?
• What connects bones at joints?
• Non-living things such as temperature and humidity are called what?
• The atomic number is typically found where on an element's periodic table entry?
• Which organelle contains genetic material and controls cell activities?
• Protons carry a positive charge and are located in the nucleus.
• What information is typically shown in a periodic table entry for an element?
• Which separation technique uses a stationary phase and a solvent to separate components based on movement?
• Which process refers to movement of water and solutes through the membrane by hydrostatic pressure?
• Which cell type is the functional unit of the nervous system that transmits electrical impulses?
• Which term describes a positively charged ion?
• Which tissue type includes skeletal, cardiac, and smooth muscle?
• In flowering plants, fertilization occurs in which structure?
• Which condition occurs when the solute outside the cell is lower than inside?
• What process splits molecules by adding water, occurring during chemical digestion?
• Autosomes are best defined as which of the following?
• Which structure collects filtrate immediately after filtration before it enters the renal tubule?
• The flap of tissue that seals off the windpipe and prevents food from entering is the:
• Which term describes cell division that results in two genetically identical daughter nuclei?
• Which cells are sensitive to light and allow us to see at night?
• The substances that react with each other are written on the left side of the equation.
• Mass number is equal to:
• Which term describes the comparison of organisms' embryos?
• Which microscope is described as magnifying around 400x under high power and typically uses staining to make structures stand out?
• Neutrons have what charge and where are they located?
• Which term specifically refers to the biological catalysts involved in digestion?
• Found at high and cool elevations, where the seasons consist of short summers and long, chilly winters, with conifers such as pine and fir?
• The green pigment responsible for absorbing light energy in photosynthesis is?
• Which cells are primarily involved in host defense?
• The term used for flowering plants is?
• What are mature bone cells called?
• Which process results in four haploid daughter cells?
• In a solution, which component is the substance that dissolves another substance?
• Which statement best describes capillaries?
• Which term describes a solution with the same solute concentration on both sides of a membrane?
• Which of the following is NOT a component of blood?
• Which interaction describes a parasite living on or in a host and harming it?
• Which instrument uses electrons to illuminate a specimen and reveal structures too small to be seen with a light microscope?
• Which category includes swamps, wetlands, rivers and streams, coral reefs, and estuaries?
• Which term describes the comparison of body structures and how they vary among species?
• Which of the following is a pure substance that is listed in the periodic table?
• Which tube contains the blood vessels that connect the fetus to the placenta?
• Which organelle is described as responsible for the storage of enzymes and minerals and the folding of proteins?
• What term describes having two different alleles for the same gene?
• Which term describes the evolutionary process through which an organism becomes better suited to its environment?
• Which term refers to the entire portion of Earth inhabited by life—the sum of all ecosystems?
• The protective waxy layer on leaves that minimizes water loss is the?
• Which boundary marks separation between outer ear and middle ear?
• Which bond type can be nonpolar or polar depending on electron distribution?
• Metals are typically located on which side of the periodic table?
• Which reaction is exemplified by the equation 2H2 + O2 → 2H2O?
• In a heterozygous genotype, which trait is expressed in the phenotype?
• If a substance is described as a solution, which statement is most accurate?
• Which type of chemical reaction occurs when an element replaces a second element in a compound?
• Which location correctly describes electrons?
• Which biomes occupy the oceans and are classified according to their water depth and proximity to the shoreline?
• Which term describes the geographical distribution of plants and animals?
• What are bundles of the axons of sensory and/or motor neurons called?
• Traits determined by genes on the X chromosome rather than the Y are called what?
• Which term is described as health on more than an individual person and family?
• Which plant cell compartments act as places for secretion, excretion, and storage in the cytoplasm?
• Which organ stores bile?
• Which staining solution is iodine-based and used in microscopy?
• An organism's observable traits are its what?
• Which organelle consists of sacs that contain digestive enzymes and digest waste and malfunctioning or dead cell structures?
• Which structure comprises the brain and spinal cord?
• The term for the coordinated muscular movement that propels swallowed food through the esophagus is:
• Which staining agent is commonly used as a basic dye to stain cells in microscopy?
• What is generated when the dendrites of a neuron are stimulated?
• Which term describes the chemical messengers produced by endocrine glands?
• Which connective tissue cushions bones at joints?
• Which staining agent is a common dye used in microscopy?
• Which term describes a muscle action that bends or moves a limb away from the anatomical position?
• The term for separate species living together in an environment is what?
• Which regulates the amount of light entering the eye?
• The process by which plants convert light energy into chemical energy is called?
• What are the special pockets in the lymphatic system where the lymph is filtered?
• Which part of the kidney is the inner portion?
• Which term describes single-cell microorganisms with a cell wall, but no organelles or nucleus?
• Largest portion of the brain; Conscious and voluntary actions are controlled here, as are other functions such as speech, vision, hearing, and memory.
• Which tissue type forms the lining of organs and covers body surfaces?
• Which structure contains substances such as amino acids, sugars, fatty acids, hormones, neurotransmitters, and salts?
• A mixture is two or more substances that are not chemically combined.
• What is the process called when mRNA is formed from a DNA template?
• The muscular tube that connects the mouth to the stomach is the:
• Which duct connects the vas deferens to the urethra?
• Which biome has a moderate climate where trees shed their leaves every year and temperatures can range widely from season to season?
• What term describes an immature egg located in the female ovary?
• Isotopes are atoms that differ in:
• Which term best describes herbivores, the plant-eating organisms in a food web?
• Which reaction is described by the equation NaOH + HCl → NaCl + H2O, according to the provided material?
• What carries out simple, quick, and automatic responses to certain stimuli?
• Which two components form the backbone of DNA?
• Which term describes the oceanic life zones defined by depth and distance from shore?
• A change in which the substance undergoing the change remains the same.
• The part of the flower that consists of the filament that supports the anther is the?
• Floral parts useful in attracting pollinators are the?
• Which autoimmune condition causes degenerative joint disease?
• Which type of bond forms when atoms share one or more pairs of electrons?
• Which term describes a collection of tissues that carries out a specialized function?
• What is produced during anaerobic respiration, a cause of sore muscles after strenuous exercise?
• Which organ stores bile and aids fat digestion?
• Which transport mechanism uses energy to move substances across the cell membrane?
• The term for an organism's genetic makeup, or allele combinations, is called what?
• Which vessels transport blood into the heart and contain valves to prevent backflow?
• The circulatory system includes which components?
• Which sensation is described as ticklish and protective, helping us withdraw from dangerous stimuli?
• Which term varies greatly in size and may be microscopic or extremely large?
• Which type of bond involves electrons shared equally between atoms?
• Which component lines the small intestine to increase surface area?
• Which health concept is generally described as finding purpose in life through relationships with self, others, nature, and God?
• Which chamber pumps blood through the aorta to all parts of the body?
• In which part of the ear are the ossicles located?
• What term describes measurable factors or qualities that change during an experiment?
• Which organ provides digestive enzymes?
• What process involves releasing a mature ovum into the fallopian tube each month?
• Which tubular structure is responsible for transporting urine from the kidney to the bladder?
• Which term designates flowering plants?
• Which term describes the iron-rich oxygen-carrying protein in blood?
• Which of the following is NOT a main type of neuron?
• Which structure contains the blood vessels connecting the fetus and placenta?
• What are the smallest branches of the bronchi?
• The digestive tube extending from the mouth to the anus is known as the:
• Which structure acts as the filtration unit of a nephron in the kidney?
• An individual with two identical alleles for a trait is described as which?
• What is the narrow tube that connects the middle ear to the throat to equalize pressure?
• An interrelated network of many food chains within an ecosystem is called what?
• What is the name of the phase change when a solid changes into a liquid?
• Which health concept is defined as how we feel and think, and how we respond to stress and cope with daily life?
• Which term describes broad geographic categories that group similar ecosystems?
• aka 'little organs'; specialized units that acts as SCAFFOLDING for the organelles
• Which part of the skeleton provides protection for the brain, spine, and thoracic organs?
• Groups on the periodic table are:
• Which nerve carries neural impulses from the eye to the brain?
• Which process involves particles moving from high concentration to low concentration, spreading out randomly?
• During intense anaerobic exercise, accumulation of what substance can cause muscle fatigue?
• A waxy outer layer that helps prevent water loss through evaporation is the?
• are the locations for cellular respiration or the conversion of food to energy at the cellular level / sites of energy production & most of its ATP
• Which molecule carries genetic information in cells and is composed of nucleotides?
• Which term denotes the theory about the processes that produced biological diversity?
• Which reaction is exemplified by the equation Cl2 + 2NaBr → 2NaCl + Br2?
• Which statement best describes constants in an experiment?
• Systole refers to which phase of the heart cycle?
• Which transparent layer forms the front of the eye and allows light to enter?
• What are the basic units of a DNA molecule, composed of a sugar, a phosphate, and one of the four bases?
• Which Mendel's law states that alleles of different genes assort independently during gamete formation?
• Which state of matter has both a definite shape and a definite volume?
• An experiment in which only one variable is manipulated at a time is called a
• Which term describes a colloidal dispersion of a liquid in another liquid?
• Which is an example of a homogeneous mixture?
• Which branch handles the internal environment (e.g., digestion)?
• What type of microscope uses light that passes through a specimen and then through a glass lens to magnify the image?
• Which term describes single-cell microorganisms that, like animal cells, lack cell walls?
• Which term best describes groups of ecosystems that share similar climates and organisms across geographic regions?
• A change in matter that produces one or more new substances.
• Which field studies how plants and animals are distributed across geographic regions?
• Which term describes the smallest vessels that connect arteries and veins?
• What term describes electrons on the outermost energy level of an atom?
• Which term describes a typically alcoholic mixture containing a medicine or remedy?
• Which term describes a fertilized egg containing a full diploid set of chromosomes from both parents?
• Which subatomic particle carries a positive charge?
• Where does spermatogenesis occur?
• Electrons are found outside the nucleus and are arranged in energy levels.
• Which term denotes disease-causing agents?
• Which level of organization is made up of a number of organs working together to carry out a major function?
• What is the male sex hormone?
• Stores and concentrates sperm after production
• Pulmonary circulation involves blood flow through which organ?
• Which macronutrient is primarily responsible for building and repairing body tissue?
• What is the concentrated mixture of wastes left in the tubules and subsequently excreted?
• the sites of protein synthesis in the cell
• Which term is the study of Algae?
• The substances that are the end products of the reaction are written on the right side of the equation.
• Which enzyme is primarily responsible for initiating carbohydrate digestion in the mouth?
• Inspiration and expiration constitute the mechanism of breathing.
• Which term describes the fluid within the cell that provides scaffolding for organelles?
• An element is a pure substance that consists of only one type of what?
• Traits governed by genes on the sex chromosomes are called what?
• Somatic motor; located below and behind the cerebrum. It is responsible for muscular coordination and balance.
• The part that contains the pollen is the?
• Which structure is the primary site for gas exchange in the lungs?
• Which duct conveys sperm from the testicle to the urethra?
• Which type of chemical process absorbs heat from the surroundings?
• What does the Peripheral Nervous System include?
• What is the term for the reaction in which an acid reacts with a base to form water and a salt?
• Which organ produces bile?
• Which group includes the shoulders, arms, pelvis, and legs?
• Which term is used for the analysis of anatomical structures across organisms to understand similarities and differences?
• Which structure is the focusing lens of the eye?
• Which biome has little precipitation and is more arid than the others?
• Osteoarthritis is best described as which of the following?
• The throat region that serves as a passage for food to the esophagus and air to the larynx is the:
• Which part of the kidney is the outer portion?
• Which trophic level consists of carnivores that eat herbivores?
• What term describes the complex of DNA, RNA, and proteins within the nucleus?
• Which organ houses the developing fetus during pregnancy?
• Chemicals that transmit information from one neuron to another
• Which bone cell is responsible for maintaining the bone matrix and communicating with other bone cells?
• The nephron is the functional unit of the kidney.
• Which connective tissue connects bone to bone?
• Which ecological relationship occurs when both species benefit?
• Which phase change occurs when a gas becomes a liquid?
• What is the cell formed by the union of a sperm and an egg called?
• Which term describes clusters of DNA, RNA, and proteins inside the nucleus?
• Which organelle is primarily responsible for packaging proteins for secretion or for use inside the cell?
• Which term describes non-living factors like temperature, humidity, and soil pH?
• What is the basic unit of structure and function in living organisms?
• Which valve allows blood to move from the right atrium to the right ventricle?
• Which health concept includes interactions with others and the relationships we build with those around us?
• What term describes good microorganisms that help the gastrointestinal system digest food?
• Which fluid fills spaces between cells in tissues and contains nutrients and waste?
• Tiny blood vessels that connect arteries and veins?
• The digestive fluid secreted by the stomach and made up of hydrochloric acid and proteases is called:
• Which term is the study of Fungi?
• What is the smallest unit of an element that retains its properties?
• Which rule states that atoms tend to have eight electrons in their valence shells, except hydrogen which needs two?
• Which component of the cell is described as having ribosomes on its surface and involved in protein production and delivery?
• What term describes a specialized cell involved in sexual reproduction?
• How many chambers does the heart have and what are they?
• Which part behind the cornea gives eye color and changes the size of the pupil?
• Which term best describes a solution that is uniform in composition at the molecular level?
• What conducts impulses away from the cell body?
• Which chemical group contains phosphorus and is part of the backbone of DNA?
• Tiny spaces between neurons; the gaps between neurons are referred to as synaptic gaps.
• What is the primary role of axon terminals?
• Which chromosome determines male sex?
• Which term describes the degree to which the body is functioning as it should?
• Which state of matter has a definite volume but no definite shape?
• If a tall plant genotype TT is crossed with a short plant genotype tt, what is the genotype of all offspring?
• What term describes elements with properties between metals and nonmetals?
• The typical female chromosome composition is which?
• Which small bone in the middle ear transmits vibrations from the eardrum to the incus?
• What is the process called when a molecule is split into smaller molecules by adding water?
• The cardiovascular system consists of which components?
• Which term refers to the study of naming and classifying organisms?
• Which condition is an autoimmune arthritis that inflames joints?
• During which process is a mature ovum released into the fallopian tube?
• Which term best describes the system that carries information between the CNS and the rest of the body?
• The pores that facilitate gas exchange on leaves are the?
• Which type of chemical reaction involves two or more reactants combining to form a single product?
• In a solution, which term describes the dissolving medium?
• Which term describes a negatively charged ion?
• (adenosine triphosphate) a chemical the cell uses to store and transfer energy within itself.
• Which term describes organisms that obtain their food by consuming plants or other animals?
• Which term refers to animals with backbones, such as fishes, amphibians, reptiles, birds, and mammals?
• Which of the following is responsible for color vision?
• Which term describes returning the limb to the anatomical position?
• Which structure is not part of the nephron but carries urine away from the kidney?
• Which components are fragments important in blood clotting?
• Which term describes a form of passive transport that uses membrane proteins?
• Which condition is caused by calcium loss and is common in older adults?
• Which organelle contains digestive enzymes and digests waste within the cell?
• Protected and enclosed within the cranium and divided into 3 areas; Cerebrum, Cerebellum, brain stem/medulla?
• Which structure directs air into the lungs?
• Which biome has a relatively constant temperature (68°F–90°F), constant daylight length throughout the year, high humidity, and abundant rain (200–400 cm/year)?
• Which element only needs two electrons in its valence shell to complete its outer shell?
• The extension of a neuron that ends in branching terminal fibers, through which messages pass to other neurons or to muscles or glands.
• Flowering plants that reproduce with flowers are called?
• Primary reproductive organs; produce both eggs & hormones (progesterone & estrogen)
• Which organ produces bile?
• The organ that secretes gastric juice as part of digestion is the:
• In a cross of contrasting traits, the dominant trait is expressed and the recessive trait is masked. This is explained by which Mendelian law?
• What is the diagram used to represent an element and its valence electrons?
• Where do sperm mature?
• What term describes a molecule that has two poles?
• Which term denotes the broadest units of classification including plants, animals, bacteria, protists, and fungi?
• Which term describes adenine, cytosine, guanine, or thymine?
• The basic units of a DNA molecule, consisting of a sugar, a phosphate, and a base, are called what?
• Which structure is the primary receiving part of a neuron?
• The enzyme that breaks down starch into smaller carbohydrate molecules is:
• Which of the following is a heterogeneous mixture?
• Which bone is scientifically named the incus and connects the malleus to the stapes?
• Which term means evidence of ancient life preserved in rocks?
• Which type of chemical reaction releases heat to the surroundings?
• Which part of the renal tubule forms a long loop in the medulla and is involved in reabsorbing water and salts?
• Which part of a neuron receives messages and conducts impulses toward the cell body?
• A solution with higher solute outside the cell is described as which?
• Which organelle modifies and packages proteins destined for use in the cell or for export from the cell?
• Which branch is concerned with the external environment?
• In a neutralization reaction, which products are typically formed?
• Interneurons make up the brain and spinal cord.
• Which sense is associated with the sense of smell?
• Which type of RNA transfers amino acids to ribosomes during protein synthesis?
• Which part controls basic homeostatic functions such as body temperature, blood pressure, and breathing?
• What term describes a unit located on chromosomes that determines inherited characteristics?
• Where does tissue fluid diffuse into the lymphatic system?
• What term refers to groups of cells with a common structure and function?
• What term refers to different forms of the same gene?
• Which process produces four haploid daughter cells from a single parent cell?
• What science studies the properties of matter and how matter changes?
• Which term refers to biology at the molecular level?
• What term refers to chemicals that act as messengers in the body to regulate growth, metabolism, and development?
• Which statement correctly matches a neuron type with its primary role?
• Charged atoms are called:
• Which term describes health on one person and that person's family and immediate environment?
• Which inheritance pattern occurs when the heterozygote expresses both parental traits simultaneously?
• The freshly oxygenated blood returns to the heart via which vessels?
• Systemic circulation moves blood to which region?
• Where are neutrons located?
• Which term consists of DNA and RNA surrounded by protein; unable to reproduce independently?
• Which type of fats includes examples such as walnuts, avocados, sunflower, canola, and fish oil?
• The ability of a solute to dissolve in a particular solvent is called what?
• Which scientist's laws explain dominance, segregation, and independent assortment?
• What is the shedding of the uterine lining called?
• Which of the following is not a muscle type?
• Which biome is characterized by extreme cold, low precipitation, and often permafrost?
• Which macronutrient primarily functions to build and repair body tissue?
• Which vessel transports blood away from the heart?
• Which enzyme digests proteins?
• Which is the principal excretory organ of the body?
• The structure that encases the flower before it blooms is the?
• Which term refers to the end products of a chemical reaction?
• A cell with two complete sets of chromosomes is called?
• Which middle-ear bone transmits vibrations between the malleus and stapes?
• The organ where most chemical digestion and absorption occurs is the?
• What is the attraction between oppositely charged ions called?
• Which type of fats includes examples like walnuts, avocados, sunflower, canola, and fish oil?
• Which term refers to the energy-producing process in cells that uses oxygen during part of its pathway?
• Which term refers to animals without backbones?
• Which term describes organisms that can make their own food, often via photosynthesis?
• Which term describes a substance with the same composition throughout?
• What focuses light onto the retina?
• Which structure runs the length of the penis and opens to the external environment, common to both the reproductive and urinary systems?
• What is the smallest unit of an element?
• What process separates substances in a solution based on boiling points?
• Non-sex chromosomes are called what?
• What is the process of forming mRNA according to the information contained in the DNA molecule?
• Which term best describes organisms that ingest other organisms for energy?
• What is the process of copying DNA prior to cell division called?
• Which term describes the reaction when an acid and a base react to form water and a salt?
• Which term refers to the broadest units of classification, including plants, animals, bacteria, protists, and fungi?
• An organism's genetic makeup, the combination of alleles it carries, is its which?
• Which organelle is the site of photosynthesis in plant cells?
• Blood from the body returns to the heart through which vessels?
• The vibrations produced by sound are transmitted through three small bones (ossicles): the malleus, incus, and stapes.
• What extends from the brain downward and is enclosed by the bones of the vertebral column?
• Which term describes the passive transport that requires membrane proteins but no energy?
• Which organ is primarily responsible for absorption of nutrients?
• Brain region that regulates essential life-sustaining functions like breathing and heart rate?
• Coronary circulation refers to blood flow to which organ?
• Which molecule contains the genetic material of the organism?
• Fertilization typically occurs in which structure?
• Which term is the study of scientific classification?
• When a heterozygote is crossed and a recessive trait appears in 25% of the offspring, this demonstrates which concept?
• Which term is focused on groups of people who share common characteristics?
• Which term describes a homogeneous mixture in which a solute is dissolved in a solvent?
• Which pattern occurs when the heterozygote expresses a mixture of the two traits?
• What is the primary role of the Peripheral Nervous System?
• Which tissue contains osteocytes and produces a hard calcium-rich extracellular matrix?
• Which tubule segment lies between the loop of Henle and the collecting duct and is the site of selective reabsorption and secretion?
• Which term describes the living components that influence an ecosystem, such as energy flow between organisms?
• The fluid matrix found between the plasma membrane & the nucleus that acts as scaffolding for the organelles
• Which muscle type is responsible for voluntary movements?
• What term describes groups of ecosystems that are common to various geographic areas?
• Pores on the lower surface of leaves that regulate gas exchange are called?
• Large, flat muscle at the bottom of the chest cavity that helps with breathing?
• Which organ is the site of egg production in females?
• What is the five-carbon sugar component of DNA nucleotides?
• What is the fertilized egg called?
• The selective nature of the plasma membrane is described as what?
• Which organelle serves as a means of transport within the cell and is made up of many channels?
• Which phase change involves a solid changing directly into a gas?
• In ecological terms, which group breaks down dead material and recycles nutrients?
• What is the developing human organism from 9 weeks after conception to birth?
• Voice box; passageway for air moving from pharynx to trachea; contains vocal cords
• Which term constitutes another group of microorganisms?
• Which structure controls passage of food from stomach to small intestine?
• What term describes substances that increase the rate of a reaction by lowering the activation energy?
• What is matter?
• Which tiny bone in the middle ear is shaped like a stirrup?
• Constants are the factors that remain the same throughout an experiment.
• A mixture in which different materials can be distinguished easily; not uniform throughout
• Small intestine surface area increased by structures called?
• Which sensory cue provides information about how hard a squeeze is?
• Which anatomical group includes the skull, vertebrae, ribs, and sternum?
• Which term refers to water moving from an area of high water concentration to an area of low concentration?
• The passageway that serves as both a conduit for food and a route for air is the:
• Breaking nutrients into smaller molecules describes which digestion process?
• Which part of the nephron is responsible for reabsorbing most water and nutrients from the filtrate?
• Which description best fits a mechanism that causes the stimulus to decline or end?
• One organism benefits and the other is harmed, such as a tapeworm in a human host. This interaction is called?
• During digestion, which component speeds up chemical digestion by acting as a biological catalyst?
• Which term best describes the group of microorganisms that include yeasts and molds?
• In a solution, which term refers to the substance dissolved in the solvent?
• What is the functional unit of the kidney?
• Breaking food into smaller pieces describes which type of digestion?
• Which connective tissue connects muscle to bone?
• Which group includes bacteria and fungi that break down nonliving organic material and recycle nutrients?
• Which term is the study of algae?
• Through which structure is urine excreted from the body?
• Which separation technique uses paper and a solvent to separate components of a solution?
• What term describes the living components of an environment, such as plants and animals?
• Which structure results from the embryonic and maternal tissues growing together to form the placenta?
• A change that does not alter the identity of a substance describes which type of change?
• Which health concept encompasses emotional, psychological, and social well-being?
• Which cells are located in the testes and secrete testosterone?
• Which part of the ear contains fluid-filled channels that respond to movement or sound?
• In a solution, which component is the substance that is dissolved?
• Which organelles contain chlorophyll, which is necessary for photosynthesis?
• What are the tubes that carry urine from the kidneys to the bladder?
• Which condition is a degenerative joint disease commonly associated with wear and tear?
• Which particles are the sites of protein synthesis?
• Thin and permeable air sacs are the functional units of the lung. What are they?
• One species benefits and the other is unaffected (for example, remora on a shark). This interaction is called?
• Which term refers to the highest level of health possible for a person who may be living with a chronic illness?
• Which transport mechanism does not require energy and relies on diffusion and filtration?
• Which term for broad water-based environments on Earth includes rivers, lakes, and oceans?
• Which is the innermost layer of the eyeball that contains rod and cone cells?
• The part of a flower that consists of the filament and the anther is the?
• Which tissue type includes cartilage, blood, fat, and bone?
• Blood is a connective tissue made of plasma, erythrocytes, leukocytes, and platelets. Which term best describes this tissue?
• In a plant growth experiment, changing the amount of fertilizer is what type of variable?
• Which variable is deliberately changed by the experimenter?
• Which state of matter has no definite shape or volume?
• What protein carries oxygen in the blood?
• What is the structure of DNA?
• Noble gases are located in which part of the periodic table?
• Which structure is formed by tissues of the embryo and the mother to support fetal development?
• Which muscle contracts to aid air intake?
• Which term describes the network of multiple food chains within an ecosystem?
• Which bones make up the limbs and girdles and enable movement?
• Which term best describes the structure that serves as a passageway for air and contains vocal cords?
• During meiosis, allele pairs separate into different gametes. This is known as which Mendelian law?
• Which neuron transmits impulses from sense organs and receptors?
• Which structure stores urine prior to excretion?
• The wave-like muscle contractions moving food along the alimentary tract are called:
• Diastole is the relaxation phase of the heart.
• Which muscle type is present in the heart and is involuntary?
• Which structure is the final passage for urine leaving the body?
• Which structure contains genetic information and controls cell activities?
• If a cell is placed in a hypotonic solution, which process drives water into the cell?
• What is the semipermeable membrane that separates the cell's contents from the surrounding fluid?
• What is the first segment of a renal tubule?
• From the left atrium, blood passes through which valve to the left ventricle?
• Which type of cell division results in two daughter nuclei containing the same number of chromosomes as the parent nucleus?
• Which term describes the energy-releasing process that uses oxygen?
• Periods on the periodic table are:
• What separates outer ear from the middle ear?
• Which middle ear bone is commonly called the hammer?
• Which organelle is often called the powerhouse of the cell?
• What is the term for a liquid turning into a solid?
• The pH of the stomach is?
• Which term describes fungi?
• Which term refers to the inner lining of the uterus?