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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. Controls hunger and thirst






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






3. 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.






4. Is more like branching out of a tree with dead ends and new branches appearing simultaneously than like steps on a ladder.






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






6. Transfers water and does not require sieve plates to allow nutrients through.






7. The phyla of round worms.






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






9. The vocal cords are found in the larynx.






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






11. The transfer of electrons.






12. Controls sensory and motor responses - and controls memory - speech - and intelligence factors.






13. 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.






14. Anabolism






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






16. 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






17. Is the sugar that lactase acts upon.






18. 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






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






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






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






22. (of some plants or fungi) feeding on dead or decaying organic matter






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






24. Is secreted by the adrenal cortex to promote sodium reabsorption in the kidney.






25. Occurs when two populations are geographically isolated from each other. Over time this results in the production of two separate species.






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






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






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






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






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






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






32. When the water concentration inside and outside the cell is equal - It is said to be in an...






33. 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).






34. Is the organelle where cellular reproductive processes occur.






35. Subsets below the kingdom level






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






37. Enzymes are usually __________ to certain reactions.






38. Inorganic phosphate






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






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






41. Contain one celled eukaryotes such as algae and protozoa.






42. 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






43. Is found on the stem between nodes.






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






45. The pituitary gland.






46. Decomposition of living matter for consumption.






47. Algae and Protozoa belong to the kingdom...






48. The class composed of birds.






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






50. 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