Test your basic knowledge |

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. The sharp boundary of an ecosystem.






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






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






4. The class composed of birds.






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






6. The pituitary gland.






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






8. The phyla of sponges.






9. The phylum of insects (bees).






10. Inorganic phosphate






11. Contains the chromosomes and is the site of reproduction through mitosis and meiosis.






12. Niche






13. Enzymes are usually __________ to certain reactions.






14. 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.






15. 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






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






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






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






19. 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.






20. In DNA Thymine pairs with...






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






22. Energy transformations that occur as chemicals are broken down or synthesized within the cell.






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






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






25. Most chemical pollutants accidentally ingested by humans are __________ - mixed with broken down pigments in the bile - then bile is secreted into the small intestine - proceeds to the large intestine - and is expelled in the feces.






26. 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.






27. Carbon - Hydrogen - Oxygen - and Nitrogen






28. 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






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






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






31. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






32. Absorb a photon of light and is found in the grana of the chloroplast.






33. Controls balance and muscle coordination






34. An orienting response to light.






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






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






37. 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.






38. 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).






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






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






41. Plants and animals obtain usable nitrogen






42. Controls hunger and thirst






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






44. 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.






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






46. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






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






48. In DNA Guanine pairs with...






49. The total amount of genetic information available for a given species.






50. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.