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






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






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






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






5. 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).






6. 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






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






8. The systematic search for individuals with a specific genotype in a delineated population.






9. Inorganic phosphate






10. Enzymes are usually __________ to certain reactions.






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






12. Stood upright before there was an increase in brain size.






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






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






15. 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






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






17. The preservation of the integrity of genetic information from one generation to another.






18. Includes all living and nonliving components of the Earth to support living things.






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






20. 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.






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






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






23. Decomposition of living matter for consumption.






24. 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.






25. Is found on the stem between nodes.






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






27. Is the sugar that lactase acts upon.






28. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






29. Has loosely packed cells that allow for gas and moisture exchange.






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






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






32. The class composed of birds.






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






34. 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.






35. Is the waxy protective outer coating of leaves.






36. Provide rigidity to plant cells (and some bacteria) and are not found within animal cells.






37. 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.






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






39. Is more like branching out of a tree with dead ends and new branches appearing simultaneously than like steps on a ladder.






40. 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






41. A length of DNA (with corresponding histones) is responsible for the production of a certain protein that causes a particular trait to be expressed in an organism.






42. Are the organelles where cellular respiration occurs.






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






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






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






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






47. Covers and protects the leaf.






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






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






50. Disease causing







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