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






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






3. Controls balance and muscle coordination






4. Some energy is lost as heat and becomes unusable.






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






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






7. 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.






8. In both living and non-living environments.






9. 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.






10. 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.






11. Allows for the genetic code to be preserved in future generations of cells.






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






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






14. The phyla of sponges.






15. The phyla of round worms.






16. The physical place where a particular organism lives. It must include all the factors that will support its life and reproduction.






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






18. 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.






19. The large brain and upright posture of Homo Sapiens...






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






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






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






23. It secretes saliva which enters the digestive tract and aids the digestive process.






24. Is the outermost of the three main layers of an embryo.






25. Process of breaking down complex materials (foods) to form simpler substances and release energy.






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






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






28. Assumes that there are periods of stability during which little evolutionary change occurs - and that speciation can occur rapidly over a very short period of time.






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






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






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






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






33. Respiratory organs within insects






34. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






35. Plants and animals obtain usable nitrogen






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






37. Transfers water and does not require sieve plates to allow nutrients through.






38. An enzyme is unaffected by the reactions it catalyzes






39. Is the waxy protective outer coating of leaves.






40. Anabolism






41. 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






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






43. Protein synthesis






44. 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.






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






46. 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






47. The phylum of insects (bees).






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






49. Inorganic phosphate






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