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






2. Carbon - Hydrogen - Oxygen - and Nitrogen






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






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






5. 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






6. Is a phylum that contains sponges.






7. Are the organelles where cellular respiration occurs.






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






9. Is the process that releases energy for use by the cell.






10. Subsets below the kingdom level






11. The phylum of insects (bees).






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






13. Niche






14. Is the outermost layer of cells of the stem.






15. The systematic search for individuals with a specific genotype in a delineated population.






16. Synthesis






17. 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.






18. 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).






19. States that where random mating is occurring within a population that is in equilibrium with its environment - the gene frequencies and genotype ratios will remain constant from generation to generation. It is a mathematical formula that shows why re






20. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






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






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






23. 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.






24. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






25. 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.






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






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






28. Respiratory organs within insects






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






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






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






32. 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.






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






34. Algae and Protozoa belong to the kingdom...






35. High temperatures






36. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






37. Approximately 7 - making it neither basic (under 7) nor alkaline (over 7).






38. Refers to the birthrate of a population.






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






40. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






41. (of some plants or fungi) feeding on dead or decaying organic matter






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






43. 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






44. Covers and protects the leaf.






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






46. Controls hunger and thirst






47. May be ions or non-protein molecules - they are similar to cofactors - but differ in that they are tightly attached by covalent bonds to the enzyme - rather than being separate atoms or molecules.






48. Is found on the stem between nodes.






49. 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






50. The transfer of electrons.







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