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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. 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.






2. Is the sugar that lactase acts upon.






3. 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.






4. An enzyme is unaffected by the reactions it catalyzes






5. The class composed of birds.






6. 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).






7. 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.






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






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






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






11. Some energy is lost as heat and becomes unusable.






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






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






14. 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.






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






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






17. 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.






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






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






20. Is a compound fruit that forms from several ovaries of separate flowers that fuse together during ripening (strawberry - or pineapple).






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






22. Are the organelles where cellular respiration occurs.






23. 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.






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






25. Controls olfactory lobes (smell)






26. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






27. Inorganic phosphate






28. 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.






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






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






31. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






32. Anabolism






33. Is a protein - which is a polymer of amino acids. They generally have the suffix -ase- like lactase.






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






35. Cleave strands of DNA segments at certain sites.






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






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






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






39. The preservation of the integrity of genetic information from one generation to another.






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






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






42. In DNA Thymine pairs with...






43. Is a phylum that contains sponges.






44. Is the number of organisms that can be supported within a particular ecosystem.






45. Plants that produce flowers as reproductive organs. They have two divisions - monocots and dicots.






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






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






48. The bronchi lead to the two lungs where they branch out in all directions into smaller tubules known as bronchioles.






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






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