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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. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






2. Ended with the extinction of the dinosaurs.






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






4. Synthesis






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






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






7. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






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






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






10. The sharp boundary of an ecosystem.






11. 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






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






13. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






14. Niche






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






16. The phyla composed of segmented worms.






17. The solid mass of cells resulting from the cleavage of the ovum before the formation of a blastula.






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






19. Is a kind of plain characterized by a warm climate - grassland - and seasonally dry climate conditions.






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






21. Are the monomers that form nucleic acids - containing a sugar - phosphate group - and a nitrogenous base.






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






23. Is a phylum that contains sponges.






24. The individual we recognize as an adult fern.






25. The phyla of round worms.






26. 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.






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






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






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






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






31. Breaking down






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






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






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






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






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






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






38. Is a substance that changes the speed of a reaction without being affected itself.






39. Carbon - Hydrogen - Oxygen - and Nitrogen






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






41. 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






42. Plants and animals obtain usable nitrogen






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






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






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






46. All store energy within their chemical bonds.






47. Engages in both passive and active transport.






48. The destruction of gametes - (sex cells such as sperm and eggs).






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






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