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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. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






2. 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.






3. The phyla of round worms.






4. Is found on the stem between nodes.






5. Protein synthesis






6. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






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






8. The destruction of gametes - (sex cells such as sperm and eggs).






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






10. The phylum of insects (bees).






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






12. The most recent and present era. It includes the radiation of flowering plants - the angiosperms.






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






14. Studied the relationships between traits expressed in parents and offspring and the genes that caused the traits to be expressed.






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






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






17. Respiratory organs within insects






18. Enzymes are usually __________ to certain reactions.






19. Assumes that there are periods of stability during which little evolutionary change occurs - and that speciation can occur rapidly over a very short period of time.






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






21. Synthesis






22. Covalent bonds






23. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






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






25. Covers and protects the leaf.






26. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






27. Process of breaking down complex materials (foods) to form simpler substances and release energy.






28. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






29. The individual we recognize as an adult fern.






30. 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).






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






32. The part of the earth that contains all living things - including the atmosphere (air) - the lithosphere (earth) - and the hydrosphere (water).






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






34. Layer that will become the skin - some endocrine glands - and the nervous system.






35. States that where random mating is occurring within a population that is in equilibrium with its environment - the gene frequencies and genotype ratios will remain constant from generation to generation. It is a mathematical formula that shows why re






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






37. Mitochondria - they constitute the center of cellular respiration.

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38. Is the organelle where cellular reproductive processes occur.






39. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






40. Ended with the extinction of the dinosaurs.






41. Is found in the root cap and is responsible for quick growth in the roots.






42. The role played by an organism in its food chain.






43. 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.






44. Is a phylum that contains sponges.






45. In DNA Thymine pairs with...






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






47. Most fossils of Hominids are from continents other than...






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






49. The sharp boundary of an ecosystem.






50. Is a compound fruit that forms from several ovaries of separate flowers that fuse together during ripening (strawberry - or pineapple).