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CLEP Biology

Subjects : clep, science, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The sharp boundary of an ecosystem.






2. When stems bend toward the light it is due to _____________ the hormone auxin - in response to light - migrates from the light to the dark side of the shoot tip. The cells on the dark side now contain more auxin - which causes the cells on that side






3. Is the organelle where cellular reproductive processes occur.






4. Contains many genes and is a structure comprised of linear DNA and associated proteins.






5. Is disorganized - unravelled - DNA with histones attached.






6. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






7. Produces the most ATP molecules - yielding 34 ATPs per glucose molecule.






8. Are organic cofactors or coenzymes that are required by some enzymatic reactions.






9. Must be present for photosynthesis to occur - it is not used up in the process.






10. Some energy is lost as heat and becomes unusable.






11. Is composed of an anterior and posterior lobe. The stalk of the lobe is connected to the hypothalamus. Antidiuretic Hormone (AH) is produced in the hypothalamus and stored in the posterior pituitary. Upon nervous stimulation from the hypothalamus - t






12. Is the process that releases energy for use by the cell.






13. Allows for the genetic code to be preserved in future generations of cells.






14. Is secreted by the adrenal cortex to promote sodium reabsorption in the kidney.






15. Controls sensory and motor responses - and controls memory - speech - and intelligence factors.






16. Some patrol the blood for antigens - but are also equipped to destroy antigens. They may regulate immune responses as well.






17. The trachea includes the windpipe or larynx in its upper portion - and the glottis - an opening that allows the gases to pass into the two branches known as the bronchi.






18. Contains the chromosomes and is the site of reproduction through mitosis and meiosis.






19. Is the sugar that lactase acts upon.






20. The phylum of insects (bees).






21. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






22. Cleave strands of DNA segments at certain sites.






23. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






24. Are cells involved in immunity and are produced in bone marrow as stem cells.






25. Covalent bonds






26. Fruits that develop from a single ripened ovary (apple - olive - acorn - cucumber).






27. The process of forming eggs and sperm cells in the reproductive organs.






28. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.






29. It secretes saliva which enters the digestive tract and aids the digestive process.






30. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






31. Plants and animals obtain usable nitrogen






32. Layer that will become the gut lining as well as some accessory structures.






33. Digestive enzymes - hydrochloric acid - and gastric juices which aid in digestion. The mucous secreted by the stomach protects the stomach lining from the acids and juices.






34. Channels is cell membranes that carry water between cells.






35. In order to become an established part of an island ecosystem there must be a populations large enough to ensure _________ - a food source - a suitable habitat - and a source of moisture.






36. Refers to the birthrate of a population.






37. A reaction that adds water to another compound. (2 hydrogens - 1 oxygen).






38. Develops from the morula as a thin layer of cells surrounding an internal cavity.






39. The lineage that led to the modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.






40. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






41. The vocal cords are found in the larynx.






42. The pituitary gland.






43. (of some plants or fungi) feeding on dead or decaying organic matter






44. Is a coenzyme required in the synthesis of collagen.






45. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






46. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






47. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






48. A cell will only remain stable if the surface area of the plasma membrane maintains a __________ with the volume of the cytoplasm.






49. Is a kind of plain characterized by a warm climate - grassland - and seasonally dry climate conditions.






50. Is a kingdom that includes algae and protozoa.