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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. Where protein synthesis occurs. They float unattached in the cytoplasm. They contain RNA that is specific to their function in protein formation.






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






3. Super-class of vertebrae including organisms with no jaws.






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






5. Produce seeds without flowers. They include conifers (cone-bearers) and cycads.






6. Is found in the root cap and is responsible for quick growth in the roots.






7. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






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






9. Disease causing






10. 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






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






12. Contains organisms that are multicellular eukaryotes including molds and mushrooms.






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






14. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






15. 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






16. Plants and animals obtain usable nitrogen






17. Enzymes are usually __________ to certain reactions.






18. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






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






20. An enzyme is unaffected by the reactions it catalyzes






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






22. Include: Vascular tissue - including both xylem and phloem - and sieve plates existing between cells of the stem.






23. 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.






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






25. Secretes insulin to lower blood sugar and maintain equilibrium. A person eats three candy bars. Within minutes this endocrine gland affects blood-glucose homeostasis.






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






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






28. 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.






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






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






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






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






33. Inorganic phosphate






34. The part of the earth that contains all living things - including the atmosphere (air) - the lithosphere (earth) - and the hydrosphere (water).






35. 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.






36. Is the waxy protective outer coating of leaves.






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






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






39. Is a kingdom that includes algae and protozoa.






40. Is found on the stem between nodes.






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






42. The phyla of sponges.






43. Niche






44. Controls sensory and motor responses - and controls memory - speech - and intelligence factors.






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






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






47. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






48. 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).






49. 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.






50. Can be accounted for by the theory of punctuated equilibrium. The fossil record shows periods of stability with regard to appearance and disappearance of species as well as periods of sudden change.