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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 substance that changes the speed of a reaction without being affected itself.






2. The phyla of sponges.






3. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






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






5. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






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






7. All store energy within their chemical bonds.






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






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






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






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






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






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






14. Allows for the genetic code to be preserved in future generations of cells.






15. Fossilized burrows from multicellular organisms begin to appear in the geological record approximately 700 million years ago during the Precambrian period. These multicellular animals had only soft parts and could not be fossilized.






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






17. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.






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






19. 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.






20. Is a phylum that contains sponges.






21. The sharp boundary of an ecosystem.






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






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






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






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






26. 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.






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






28. The large brain and upright posture of Homo Sapiens...






29. Approximately 7 - making it neither basic (under 7) nor alkaline (over 7).






30. The pituitary gland.






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






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






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

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






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






36. 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






37. 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).






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






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






40. 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.






41. Is a kingdom that includes algae and protozoa.






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






43. 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






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






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






46. 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






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






48. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






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






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