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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. 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






2. Small - green - heart-shaped gametophyte plant form of a fern that can make its own food and absorb water and nutrients from the soil






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






4. The pituitary gland.






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






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






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. In both living and non-living environments.






9. Is a phylum that contains sponges.






10. Controls balance and muscle coordination






11. 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.






12. 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).






13. Controls olfactory lobes (smell)






14. In DNA Thymine pairs with...






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






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






17. Protein synthesis






18. 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.






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






20. The vocal cords are found in the larynx.






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






22. 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.






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






24. Carbon - Hydrogen - Oxygen - and Nitrogen






25. All store energy within their chemical bonds.






26. 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.






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






28. Niche






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






30. Enzymes are usually __________ to certain reactions.






31. Is an abundant element found in protoplasm. Together with oxygen - hydrogen - and nitrogen - it composes over 90% of cellular structure.






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






33. The sharp boundary of an ecosystem.






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






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






36. 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.






37. 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






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






39. The destruction of gametes - (sex cells such as sperm and eggs).






40. Decomposition of living matter for consumption.






41. Super-class of vertebrae including organisms with jaws.






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






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






44. 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






45. 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






46. It secretes saliva which enters the digestive tract and aids the digestive process.






47. 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.






48. Are tubes constructed of a geometrical arrangement of microtubules in a pinwheel shape. Their function includes the formation of new microtubules - but is primarily to form the structural skeleton around which cells split during mitosis and meiosis.






49. Respiratory organs within insects






50. The individual we recognize as an adult fern.