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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. Controls hunger and thirst






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






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






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






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






6. Is a phylum that contains sponges.






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






8. 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.






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






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






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






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






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






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






15. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






16. Are more closely related to Homo Sapiens than to other apes - but Homo Sapiens did not evolve from chimpanzees.






17. 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.






18. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






19. 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.






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






21. Are the monomers that form nucleic acids - containing a sugar - phosphate group - and a nitrogenous base.






22. Contains optic lobes - controls sight.






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






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






25. Cleave strands of DNA segments at certain sites.






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






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






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






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






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






32. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






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






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






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






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






37. The transfer of electrons.






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






39. The phyla of sponges.






40. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






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






42. All store energy within their chemical bonds.






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






44. Most fossils of Hominids are from continents other than...






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






46. 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






47. Controls balance and muscle coordination






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






49. Are surrounded by capillaries that allow for carbon dioxide to diffuse into the lungs and oxygen to diffuse out.






50. The solid mass of cells resulting from the cleavage of the ovum before the formation of a blastula.