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






2. The sharp boundary of an ecosystem.






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






4. The transfer of electrons.






5. In DNA Guanine pairs with...






6. Is the sugar that lactase acts upon.






7. 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.






8. 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






9. Includes all living and nonliving components of the Earth to support living things.






10. 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.






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






12. 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.






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






14. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






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






16. Refers to the birthrate of a population.






17. Small - green - heart-shaped gametophyte plant form of a fern that can make its own food and absorb water and nutrients from the soil






18. 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.






19. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






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






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






22. Respiratory organs within insects






23. Is found on the stem between nodes.






24. Synthesis






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






26. Disease causing






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






28. Is the waxy protective outer coating of leaves.






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






30. In order to become an established part of an island ecosystem there must be a populations large enough to ensure _________ - a food source - a suitable habitat - and a source of moisture.






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






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






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






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






35. High temperatures






36. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






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






38. Absorb a photon of light and is found in the grana of the chloroplast.






39. Is a compound fruit that forms from several ovaries of separate flowers that fuse together during ripening (strawberry - or pineapple).






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






41. 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.






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






43. The pituitary gland.






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






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






46. A hydrogen bond involves the ________________ and can be easily broken.






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






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






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






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

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