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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. Controls olfactory lobes (smell)






2. 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






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






4. Mitochondria - they constitute the center of cellular respiration.

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






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






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






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






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






10. 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






11. Synthesis






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






13. 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.






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






15. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






16. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






17. Is the organelle where cellular reproductive processes occur.






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






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






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






21. Cleave strands of DNA segments at certain sites.






22. Include: Vascular tissue - including both xylem and phloem - and sieve plates existing between cells of the stem.






23. Carbon - Hydrogen - Oxygen - and Nitrogen






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






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






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






27. The phyla of round worms.






28. 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






29. What phylum are snakes in?






30. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






31. The process whereby cells build molecules and store energy (in the form of covalent chemical bonds).






32. An enzyme is unaffected by the reactions it catalyzes






33. Refers to the birthrate of a population.






34. Is a phylum that contains sponges.






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






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






37. Sex-linked recessive disorder carried on the x chromosome defined by the absence of one or more proteins required for blood clotting






38. Is a phylum that contains jellyfish - hydra - etc.






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






40. Can be accounted for by the theory of punctuated equilibrium. The fossil record shows periods of stability with regard to appearance and disappearance of species as well as periods of sudden change.






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






42. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






43. Is the waxy protective outer coating of leaves.






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






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






46. 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.






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






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






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






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