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






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






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






4. Is a special protein that acts as a catalyst for organic reactions.






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






6. The sharp boundary of an ecosystem.






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






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






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






10. 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






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






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






13. Cleave strands of DNA segments at certain sites.






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






15. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






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






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






18. 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.






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






20. A length of DNA (with corresponding histones) is responsible for the production of a certain protein that causes a particular trait to be expressed in an organism.






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






22. 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.






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






24. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






25. Protein synthesis






26. Covalent bonds






27. 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.






28. The class composed of birds.






29. Contains optic lobes - controls sight.






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






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






32. Ended with the extinction of the dinosaurs.






33. Is found on the stem between nodes.






34. 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).






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






36. Is a kind of plain characterized by a warm climate - grassland - and seasonally dry climate conditions.






37. 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.






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






39. The pituitary gland.






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






41. Refers to the birthrate of a population.






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






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






44. Anabolism






45. Layer that will become the gut lining as well as some accessory structures.






46. 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






47. Controls hunger and thirst






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






49. In order to become an established part of an island ecosystem there must be a populations large enough to ensure _________ - a food source - a suitable habitat - and a source of moisture.






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