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






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






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






4. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






5. The pituitary gland.






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






7. 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.






8. Controls balance and muscle coordination






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






10. The large brain and upright posture of Homo Sapiens...






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






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






13. Cleave strands of DNA segments at certain sites.






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






15. Occurs when an individual from an adjacent population of the same species immigrates and breeds with a member of a previously locally isolated group - resulting in a change in the gene pool.






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






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






18. Covers and protects the leaf.






19. Process in which elements - chemical compounds - and other forms of matter are passed from one organism to another and from one part of the biosphere to another.






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






21. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






22. Engages in both passive and active transport.






23. An enzyme is unaffected by the reactions it catalyzes






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






25. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






26. All store energy within their chemical bonds.






27. The transfer of electrons.






28. The pharynx is between the nasal passage and the trachea. Air passes into the body via the nasal passage - then passes through the pharynx and on to the trachea.






29. Nonvascular plants such as mosses which lack tissue for conducting food or water.






30. Super-class of vertebrae including organisms with no jaws.






31. In DNA Guanine pairs with...






32. Disease causing






33. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






34. High temperatures






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






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






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






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






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






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






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






43. Refers to the birthrate of a population.






44. Covalent bonds






45. 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.






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






47. Niche






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






49. 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.






50. The sharp boundary of an ecosystem.