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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. Becomes available for erosion as undersea sedimentary rocks are up-thrust by volcanic activity - erosion releases it from rocks into streams where it combines with oxygen to form phosphates in lakes that are then absorbed by plants - it is recycled t






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






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






4. Controls olfactory lobes (smell)






5. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






6. Subsets below the kingdom level






7. An orienting response to light.






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






9. The class composed of birds.






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






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






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






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






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






15. Is the waxy protective outer coating of leaves.






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






17. Decomposition of living matter for consumption.






18. Consists of undifferentiated cells capable of quick growth and specialization. It is responsible for elongation of the stem.






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






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






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






22. Is a phylum that contains sponges.






23. Controls hunger and thirst






24. A cell will only remain stable if the surface area of the plasma membrane maintains a __________ with the volume of the cytoplasm.






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






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






27. 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






28. Process of breaking down complex materials (foods) to form simpler substances and release energy.






29. 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






30. 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.






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






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






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






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






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






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






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






38. 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.






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






40. Are the organelles where cellular respiration occurs.






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






42. 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.






43. 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.






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






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






46. 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.






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






48. The role played by an organism in its food chain.






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






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