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






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






3. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






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






5. 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.






6. Is the waxy protective outer coating of leaves.






7. Covers and protects the leaf.






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






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






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






11. 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.






12. Plants that produce flowers as reproductive organs. They have two divisions - monocots and dicots.






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






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






15. Anabolism






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






17. Engages in both passive and active transport.






18. Is the process that releases energy for use by the cell.






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






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






21. Is a social behavior of an organism that is beneficial to the group at the individual's expense.






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






23. Plants and animals obtain usable nitrogen






24. Contains organisms that are multicellular eukaryotes including molds and mushrooms.






25. Respiratory organs within insects






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






27. Is the sugar that lactase acts upon.






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






29. 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






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






31. Are tubes constructed of a geometrical arrangement of microtubules in a pinwheel shape. Their function includes the formation of new microtubules - but is primarily to form the structural skeleton around which cells split during mitosis and meiosis.






32. The vocal cords are found in the larynx.






33. 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.






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






35. Breaking down






36. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






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






38. Is a phylum that contains sponges.






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






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






41. 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.






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






43. 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.






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






45. Is found on the stem between nodes.






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






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






48. Controls hunger and thirst






49. Are the monomers that form nucleic acids - containing a sugar - phosphate group - and a nitrogenous base.






50. Inorganic phosphate