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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. 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






2. The transfer of electrons.






3. Controls hunger and thirst






4. Plants and animals obtain usable nitrogen






5. The phylum of insects (bees).






6. Most chemical pollutants accidentally ingested by humans are __________ - mixed with broken down pigments in the bile - then bile is secreted into the small intestine - proceeds to the large intestine - and is expelled in the feces.






7. 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.






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






9. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






10. Is a molecule that stores information for protein synthesis and genetic coding.






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






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






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






14. Is the organelle where cellular reproductive processes occur.






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






16. Subsets below the kingdom level






17. Inorganic phosphate






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






19. 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.






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






21. Are the organelles where cellular respiration occurs.






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






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






24. In both living and non-living environments.






25. 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.






26. In DNA Thymine pairs with...






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






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






29. (of some plants or fungi) feeding on dead or decaying organic matter






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






31. Occurs when two populations are geographically isolated from each other. Over time this results in the production of two separate species.






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






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






34. Is the waxy protective outer coating of leaves.






35. Absorb a photon of light and is found in the grana of the chloroplast.






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






37. Process in which elements - chemical compounds - and other forms of matter are passed from one organism to another and from one part of the biosphere to another.






38. Is disorganized - unravelled - DNA with histones attached.






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






40. 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.






41. Is a phylum that contains sponges.






42. Synthesis






43. 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.






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






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






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






47. Is the sugar that lactase acts upon.






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






49. 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






50. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.







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