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






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






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. 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.






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






6. Is found on the stem between nodes.






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






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






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






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






11. Some energy is lost as heat and becomes unusable.






12. In DNA Thymine pairs with...






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






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






15. Some enzymes contain a __________ component that is essential to their functions.






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






17. Has extreme cold temperatures - low precipitation - modified grassland - perma-frost - a short growing season and some plants and animals.






18. Decomposition of living matter for consumption.






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






20. 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






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






22. Breaking down






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






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






25. Is the waxy protective outer coating of leaves.






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






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






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






29. There was extensive radiation of fish during the Devonian and Silurian periods within the Paleozoic Era.






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






31. High temperatures






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






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






34. Is the sugar that lactase acts upon.






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






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






37. The bronchi lead to the two lungs where they branch out in all directions into smaller tubules known as bronchioles.






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






39. 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.






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






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






42. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






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






44. Protein synthesis






45. Controls hunger and thirst






46. Channels is cell membranes that carry water between cells.






47. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.






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






49. The phylum of insects (bees).






50. 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.