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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. Has extreme hot or cold temperatures - with very low precipitation - sandy or rocky terrain - sparse vegetation (mainly succulents) - small animals - rodents - and reptiles.






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






3. Secretes insulin to lower blood sugar and maintain equilibrium. A person eats three candy bars. Within minutes this endocrine gland affects blood-glucose homeostasis.






4. 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.






5. Engages in both passive and active transport.






6. Veins in the leaf and are also distributed throughout the stem






7. Is the waxy protective outer coating of leaves.






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






9. Is the outermost layer of cells of the stem.






10. 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.






11. 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






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






13. Are surrounded by capillaries that allow for carbon dioxide to diffuse into the lungs and oxygen to diffuse out.






14. The vocal cords are found in the larynx.






15. 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






16. Is the sugar that lactase acts upon.






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






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






19. Where protein synthesis occurs. They float unattached in the cytoplasm. They contain RNA that is specific to their function in protein formation.






20. Energy transformations that occur as chemicals are broken down or synthesized within the cell.






21. Consists of undifferentiated cells capable of quick growth and specialization. It is responsible for elongation of the stem.






22. Super-class of vertebrae including organisms with jaws.






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






24. Disease causing






25. 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.






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






27. Approximately 7 - making it neither basic (under 7) nor alkaline (over 7).






28. Is the number of organisms that can be supported within a particular ecosystem.






29. The individual we recognize as an adult fern.






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






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






32. 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






33. An enzyme is unaffected by the reactions it catalyzes






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






35. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






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






37. Contain one celled eukaryotes such as algae and protozoa.






38. Are formed when the plasma membrane of a cell encloses a molecule outside the membrane - then releases a membrane bound sack containing the desired molecule into the cytoplasm. This process allows the cell to absorb molecules that are larger in size






39. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






40. Is a kingdom that includes algae and protozoa.






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






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






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






44. Synthesis






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






46. What phylum are snakes in?






47. 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.






48. Is when expression of genetic traits is determined by weather the trait is inherited from the mother or the father.






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






50. Small - green - heart-shaped gametophyte plant form of a fern that can make its own food and absorb water and nutrients from the soil