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






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






3. Subsets below the kingdom level






4. Controls hunger and thirst






5. Is composed of a double layer (bilayer) of phospholipids with protein globules imbedded within the layers. The construction of the membrane allows it to aid the function of the cell by permitting entrance and exit of molecules as needed by the cell.






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






7. Breaking down






8. Fossilized burrows from multicellular organisms begin to appear in the geological record approximately 700 million years ago during the Precambrian period. These multicellular animals had only soft parts and could not be fossilized.






9. Is the waxy protective outer coating of leaves.






10. Controls olfactory lobes (smell)






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






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






13. Niche






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






15. Cleave strands of DNA segments at certain sites.






16. Has extreme hot or cold temperatures - with very low precipitation - sandy or rocky terrain - sparse vegetation (mainly succulents) - small animals - rodents - and reptiles.






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






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






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






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






21. The phyla of sponges.






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






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






24. Carbon - Hydrogen - Oxygen - and Nitrogen






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






26. Plants and animals obtain usable nitrogen






27. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.






28. The sharp boundary of an ecosystem.






29. The vocal cords are found in the larynx.






30. Is a packet of digestive enzymes that destroy cellular wastes.






31. Developed by the German scientists Schleiden and Schwann - States that all living things are made of cells - cells are the basic units of life - all cells come from pre-existing cells.






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






33. Fruits that develop from a single ripened ovary (apple - olive - acorn - cucumber).






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






35. Veins in the leaf and are also distributed throughout the stem






36. Disease causing






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






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






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






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






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






42. Ended with the extinction of the dinosaurs.






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






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






45. What phylum are snakes in?






46. 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






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






48. The pituitary gland.






49. Covers and protects the leaf.






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