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






2. Controls balance and muscle coordination






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






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






5. Must be present for photosynthesis to occur - it is not used up in the process.






6. 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






7. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






8. 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






9. Inorganic phosphate






10. Is the sugar that lactase acts upon.






11. Is the organelle where cellular reproductive processes occur.






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






13. 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.






14. Is composed of an anterior and posterior lobe. The stalk of the lobe is connected to the hypothalamus. Antidiuretic Hormone (AH) is produced in the hypothalamus and stored in the posterior pituitary. Upon nervous stimulation from the hypothalamus - t






15. Produce seeds without flowers. They include conifers (cone-bearers) and cycads.






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






17. Contains many genes and is a structure comprised of linear DNA and associated proteins.






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






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






20. Cleave strands of DNA segments at certain sites.






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






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






23. The vocal cords are found in the larynx.






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






25. The transfer of electrons.






26. 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.






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






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






29. 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.






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






31. Breaking down






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






33. Some patrol the blood for antigens - but are also equipped to destroy antigens. They may regulate immune responses as well.






34. Is when expression of genetic traits is determined by weather the trait is inherited from the mother or the father.






35. 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.






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

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






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






39. Is a coenzyme required in the synthesis of collagen.






40. The trachea includes the windpipe or larynx in its upper portion - and the glottis - an opening that allows the gases to pass into the two branches known as the bronchi.






41. Covers and protects the leaf.






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






43. Is the process that releases energy for use by the cell.






44. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






45. Has extreme hot or cold temperatures - with very low precipitation - sandy or rocky terrain - sparse vegetation (mainly succulents) - small animals - rodents - and reptiles.






46. The sharp boundary of an ecosystem.






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






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






49. The process whereby cells build molecules and store energy (in the form of covalent chemical bonds).






50. 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).