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






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






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






4. Plants and animals obtain usable nitrogen






5. 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.






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






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






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






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






10. The phyla of sponges.






11. Controls olfactory lobes (smell)






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






13. In DNA Thymine pairs with...






14. 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.






15. The phyla composed of segmented worms.






16. 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.






17. Synthesis






18. Contains organisms that are multicellular eukaryotes including molds and mushrooms.






19. Niche






20. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






21. 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.






22. 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






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






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






25. Is a phylum that contains sponges.






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. 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.






28. In DNA Guanine pairs with...






29. Protein synthesis






30. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






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






32. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






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






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






35. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






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






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






38. Is the organelle where cellular reproductive processes occur.






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






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






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






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






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






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






46. 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






47. The phyla of round worms.






48. The individual we recognize as an adult fern.






49. Are the organelles where cellular respiration occurs.






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