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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. 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






2. 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.






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






4. Is a molecule that stores information for protein synthesis and genetic coding.






5. Is the sugar that lactase acts upon.






6. 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






7. The process of forming eggs and sperm cells in the reproductive organs.






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






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






10. Mitochondria - they constitute the center of cellular respiration.

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11. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






12. The phyla composed of segmented worms.






13. Engages in both passive and active transport.






14. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






15. Breaking down






16. Enzymes are usually __________ to certain reactions.






17. The vocal cords are found in the larynx.






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






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






20. Contains optic lobes - controls sight.






21. Subsets below the kingdom level






22. Protein synthesis






23. Where protein synthesis occurs. They float unattached in the cytoplasm. They contain RNA that is specific to their function in protein formation.






24. An orienting response to light.






25. 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).






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






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






28. 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






29. Is comprised of all the organisms that interact within a given ecosystem whether or not it is at carrying capacity.






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






31. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






32. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






33. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






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






35. In DNA Thymine pairs with...






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






37. A hydrogen bond involves the ________________ and can be easily broken.






38. Is a packet of digestive enzymes that destroy cellular wastes.






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






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






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






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






43. In both living and non-living environments.






44. 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.






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






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






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






48. The most recent and present era. It includes the radiation of flowering plants - the angiosperms.






49. 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.






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