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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. 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.






2. 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.






3. Carbon - Hydrogen - Oxygen - and Nitrogen






4. Inorganic phosphate






5. Protein synthesis






6. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






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






8. Stood upright before there was an increase in brain size.






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






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






11. 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






12. Must be present for photosynthesis to occur - it is not used up in the process.






13. Covalent bonds






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






16. Is the waxy protective outer coating of leaves.






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






18. Cleave strands of DNA segments at certain sites.






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






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






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






22. 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






23. Veins in the leaf and are also distributed throughout the stem






24. The pituitary gland.






25. 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.






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






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






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






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






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






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






32. The cells of a developing embryo (at the gastrula stage) differentiate into layers - that will later develop into different tissues and organs - including the mesoderm - ectoderm - and endoderm.






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






34. The destruction of gametes - (sex cells such as sperm and eggs).






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






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






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






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






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






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






41. The transfer of electrons.






42. What phylum are snakes in?






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






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






45. Ended with the extinction of the dinosaurs.






46. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






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






48. Is the major component of sand and is the most abundant element found in the lithosphere. It is not recycled.






49. In DNA Thymine pairs with...






50. 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.






Can you answer 50 questions in 15 minutes?



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