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






2. The transfer of electrons.






3. 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.






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






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






6. In both living and non-living environments.






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






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






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






10. 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






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






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






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






15. Sex-linked recessive disorder carried on the x chromosome defined by the absence of one or more proteins required for blood clotting






16. Niche






17. 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






18. Subsets below the kingdom level






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. Covalent bonds






21. 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






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






23. An orienting response to light.






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






25. The phyla composed of segmented worms.






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






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






28. 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






29. May be ions or non-protein molecules - they are similar to cofactors - but differ in that they are tightly attached by covalent bonds to the enzyme - rather than being separate atoms or molecules.






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






31. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






32. 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.






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






34. 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.






35. Disease causing






36. In DNA Thymine pairs with...






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






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






39. Enzymes are usually __________ to certain reactions.






40. 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.






41. Is the organelle where cellular reproductive processes occur.






42. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






43. 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.






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






45. 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.






46. 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.






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






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






49. Has loosely packed cells that allow for gas and moisture exchange.






50. 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.







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