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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. 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.






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






4. 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.






5. Synthesis






6. Subsets below the kingdom level






7. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






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






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






10. Is a social behavior of an organism that is beneficial to the group at the individual's expense.






11. 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.






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






13. Produces the most ATP molecules - yielding 34 ATPs per glucose molecule.






14. Layer that will become the skin - some endocrine glands - and the nervous system.






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






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






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






18. Respiratory organs within insects






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






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






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






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






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






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






25. Niche






26. The class composed of birds.






27. Plants and animals obtain usable nitrogen






28. The phyla of sponges.






29. Contains optic lobes - controls sight.






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






31. 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.






32. 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






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






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






35. Breaking down






36. Are cells involved in immunity and are produced in bone marrow as stem cells.






37. The phyla of round worms.






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






39. What phylum are snakes in?






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






41. 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.






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


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






44. Carbon - Hydrogen - Oxygen - and Nitrogen






45. Studied the relationships between traits expressed in parents and offspring and the genes that caused the traits to be expressed.






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






47. Disease causing






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






49. Is found on the stem between nodes.






50. Is composed of a double layer (bilayer) of phospholipids with protein globules imbedded within the layers. The construction of the membrane allows it to aid the function of the cell by permitting entrance and exit of molecules as needed by the cell.