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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. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






2. Is the outermost of the three main layers of an embryo.






3. An enzyme is unaffected by the reactions it catalyzes






4. The large brain and upright posture of Homo Sapiens...






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






6. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






7. Respiratory organs within insects






8. An orienting response to light.






9. The class composed of birds.






10. The solid mass of cells resulting from the cleavage of the ovum before the formation of a blastula.






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






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






13. Is weaker than ionic - covalent - disulfide - or double bonds.






14. A hydrogen bond involves the ________________ and can be easily broken.






15. Ended with the extinction of the dinosaurs.






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






17. Controls olfactory lobes (smell)






18. Produce seeds without flowers. They include conifers (cone-bearers) and cycads.






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






20. This is a carboxyl group and is the signature group found within organic acids.






21. The physical place where a particular organism lives. It must include all the factors that will support its life and reproduction.






22. Is the earliest period of the Paleozoic era. Began with the Cambrian explosion - this explosion of life resulted in the representatives of most of the modern phyla being present.






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






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






25. The vocal cords are found in the larynx.






26. Is a packet of digestive enzymes that destroy cellular wastes.






27. Fossilized burrows from multicellular organisms begin to appear in the geological record approximately 700 million years ago during the Precambrian period. These multicellular animals had only soft parts and could not be fossilized.






28. Nonvascular plants such as mosses which lack tissue for conducting food or water.






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






30. The transfer of electrons.






31. Is a special protein that acts as a catalyst for organic reactions.






32. Becomes available for erosion as undersea sedimentary rocks are up-thrust by volcanic activity - erosion releases it from rocks into streams where it combines with oxygen to form phosphates in lakes that are then absorbed by plants - it is recycled t






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






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






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






36. Is the waxy protective outer coating of leaves.






37. Algae and Protozoa belong to the kingdom...






38. Plants and animals obtain usable nitrogen






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






40. Can be accounted for by the theory of punctuated equilibrium. The fossil record shows periods of stability with regard to appearance and disappearance of species as well as periods of sudden change.






41. Is comprised of all the organisms that interact within a given ecosystem whether or not it is at carrying capacity.






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






43. Absorb a photon of light and is found in the grana of the chloroplast.






44. Breaking down






45. The phyla of round worms.






46. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






47. An opportunistic life strategy strategy. Lichens invading a bare rock area after a volcanic eruption is an example.






48. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






49. Is an abundant element found in protoplasm. Together with oxygen - hydrogen - and nitrogen - it composes over 90% of cellular structure.






50. The cells of a developing embryo (at the gastrula stage) differentiate into layers - that will later develop into different tissues and organs - including the mesoderm - ectoderm - and endoderm.