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






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






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






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






5. Contains optic lobes - controls sight.






6. Transfers water and does not require sieve plates to allow nutrients through.






7. The size of a cell is limited by the ratio of its surface area to volume.






8. In DNA Guanine pairs with...






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






10. In DNA Thymine pairs with...






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

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12. Is the major component of sand and is the most abundant element found in the lithosphere. It is not recycled.






13. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






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






15. Plants and animals obtain usable nitrogen






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






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






18. The number of organisms in a given community - can be above or below the carrying capacity.






19. Is a social behavior of an organism that is beneficial to the group at the individual's expense.






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






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






22. 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.






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






24. 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






25. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






26. 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






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






28. 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






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






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






31. Refers to the birthrate of a population.






32. Enzymes are usually __________ to certain reactions.






33. Occurs when an individual from an adjacent population of the same species immigrates and breeds with a member of a previously locally isolated group - resulting in a change in the gene pool.






34. Covalent bonds






35. Is a protein - which is a polymer of amino acids. They generally have the suffix -ase- like lactase.






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






37. The transfer of electrons.






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






39. Developed by the German scientists Schleiden and Schwann - States that all living things are made of cells - cells are the basic units of life - all cells come from pre-existing cells.






40. 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.






41. May be ions or non-protein molecules - they are similar to cofactors - but differ in that they are tightly attached by covalent bonds to the enzyme - rather than being separate atoms or molecules.






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






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






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






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






46. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






47. The total amount of genetic information available for a given species.






48. 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.






49. Plants that produce flowers as reproductive organs. They have two divisions - monocots and dicots.






50. Cleave strands of DNA segments at certain sites.







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