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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 the outermost of the three main layers of an embryo.






2. Carbon - Hydrogen - Oxygen - and Nitrogen






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






4. All store energy within their chemical bonds.






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






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






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






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






9. Are tubes constructed of a geometrical arrangement of microtubules in a pinwheel shape. Their function includes the formation of new microtubules - but is primarily to form the structural skeleton around which cells split during mitosis and meiosis.






10. 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






11. Cleave strands of DNA segments at certain sites.






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






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






14. Controls sensory and motor responses - and controls memory - speech - and intelligence factors.






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






16. The preservation of the integrity of genetic information from one generation to another.






17. Is the organelle where cellular reproductive processes occur.






18. Anabolism






19. Respiratory organs within insects






20. Breaking down






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






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






23. The phyla composed of segmented worms.






24. Enzymes are usually __________ to certain reactions.






25. Is an abundant element found in protoplasm. Together with oxygen - hydrogen - and nitrogen - it composes over 90% of cellular structure.






26. The transfer of electrons.






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






28. Ended with the extinction of the dinosaurs.






29. 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.






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






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






32. Refers to the birthrate of a population.






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






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






35. Synthesis






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






37. Inorganic phosphate






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






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






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






41. The most recent and present era. It includes the radiation of flowering plants - the angiosperms.






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






43. The pharynx is between the nasal passage and the trachea. Air passes into the body via the nasal passage - then passes through the pharynx and on to the trachea.






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






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






47. The individual we recognize as an adult fern.






48. The vocal cords are found in the larynx.






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






50. In DNA Thymine pairs with...