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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. States that where random mating is occurring within a population that is in equilibrium with its environment - the gene frequencies and genotype ratios will remain constant from generation to generation. It is a mathematical formula that shows why re






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






3. Controls hunger and thirst






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






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






6. 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.






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






8. The class composed of birds.






9. Inorganic phosphate






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






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






12. 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






13. Disease causing






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






15. Respiratory organs within insects






16. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






17. The phyla of sponges.






18. In DNA Thymine pairs with...






19. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






20. Subsets below the kingdom level






21. Covers and protects the leaf.






22. Carbon - Hydrogen - Oxygen - and Nitrogen






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






24. 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).






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






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






27. The phylum of insects (bees).






28. The phyla of round worms.






29. 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.






30. 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






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






32. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






33. Is a phylum that contains sponges.






34. Controls balance and muscle coordination






35. 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.






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






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






38. 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.






39. 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.






40. An enzyme is unaffected by the reactions it catalyzes






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






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






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






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






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






46. The individual we recognize as an adult fern.






47. Are formed when the plasma membrane of a cell encloses a molecule outside the membrane - then releases a membrane bound sack containing the desired molecule into the cytoplasm. This process allows the cell to absorb molecules that are larger in size






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






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






50. Anabolism