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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 disorganized - unravelled - DNA with histones attached.






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






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






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






5. 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.






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






7. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






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






9. Controls balance and muscle coordination






10. Cleave strands of DNA segments at certain sites.






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






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






13. Includes all living and nonliving components of the Earth to support living things.






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






15. 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






16. Is the organelle where cellular reproductive processes occur.






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






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






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






20. Has extreme cold temperatures - low precipitation - modified grassland - perma-frost - a short growing season and some plants and animals.






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






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






23. Digestive enzymes - hydrochloric acid - and gastric juices which aid in digestion. The mucous secreted by the stomach protects the stomach lining from the acids and juices.






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






25. Are organic cofactors or coenzymes that are required by some enzymatic reactions.






26. Is a kingdom that includes algae and protozoa.






27. 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.






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






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






30. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






31. Is secreted by the adrenal cortex to promote sodium reabsorption in the kidney.






32. The phylum of insects (bees).






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






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






35. An enzyme is unaffected by the reactions it catalyzes






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






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






38. Protein synthesis






39. Is a molecule that stores information for protein synthesis and genetic coding.






40. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






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






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






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






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






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






46. Controls olfactory lobes (smell)






47. The lineage that led to the modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.






48. Fossilized burrows from multicellular organisms begin to appear in the geological record approximately 700 million years ago during the Precambrian period. These multicellular animals had only soft parts and could not be fossilized.






49. 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.






50. In DNA Guanine pairs with...