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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 a kingdom that includes algae and protozoa.






2. Is the outermost of the three main layers of an embryo.






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






4. Is disorganized - unravelled - DNA with histones attached.






5. Most chemical pollutants accidentally ingested by humans are __________ - mixed with broken down pigments in the bile - then bile is secreted into the small intestine - proceeds to the large intestine - and is expelled in the feces.






6. All store energy within their chemical bonds.






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






8. Is the waxy protective outer coating of leaves.






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






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






11. An enzyme is unaffected by the reactions it catalyzes






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






13. 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.






14. Most fossils of Hominids are from continents other than...






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






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






17. Respiratory organs within insects






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






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






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






21. The cells of a developing embryo (at the gastrula stage) differentiate into layers - that will later develop into different tissues and organs - including the mesoderm - ectoderm - and endoderm.






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






23. 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.






24. The phyla of round worms.






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






26. Energy transformations that occur as chemicals are broken down or synthesized within the cell.






27. 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.






28. Is a compound fruit that develops from many ovaries of a single flower fusing together (raspberry).






29. 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.






30. Cleave strands of DNA segments at certain sites.






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






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






33. In DNA Thymine pairs with...






34. 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






35. 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






36. The lineage that led to the modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.






37. Covers and protects the leaf.






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






39. A suffix meaning 'to break apart.' O || ||






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






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






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






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






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






45. Ended with the extinction of the dinosaurs.






46. The size of a cell is limited by the ratio of its surface area to volume.






47. 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.






48. Carbon - Hydrogen - Oxygen - and Nitrogen






49. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






50. A cell will only remain stable if the surface area of the plasma membrane maintains a __________ with the volume of the cytoplasm.







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