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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 layer of cells of the stem.






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






3. Becomes available for erosion as undersea sedimentary rocks are up-thrust by volcanic activity - erosion releases it from rocks into streams where it combines with oxygen to form phosphates in lakes that are then absorbed by plants - it is recycled t






4. 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.






5. 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.






6. Is a special protein that acts as a catalyst for organic reactions.






7. This is a carboxyl group and is the signature group found within organic acids.






8. The size of a cell is limited by the ratio of its surface area to volume.






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






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






11. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






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






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






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






15. 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.






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






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






18. High temperatures






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






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






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






22. 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.






23. The process of forming eggs and sperm cells in the reproductive organs.






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






25. A length of DNA (with corresponding histones) is responsible for the production of a certain protein that causes a particular trait to be expressed in an organism.






26. Respiratory organs within insects






27. 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






28. Is the sugar that lactase acts upon.






29. Covers and protects the leaf.






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






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






32. Contains optic lobes - controls sight.






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






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






35. The role played by an organism in its food chain.






36. Decomposition of living matter for consumption.






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






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






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






40. The transfer of electrons.






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






42. Nonvascular plants such as mosses which lack tissue for conducting food or water.






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






44. Channels is cell membranes that carry water between cells.






45. The phyla of sponges.






46. In DNA Thymine pairs with...






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






48. Developed by the German scientists Schleiden and Schwann - States that all living things are made of cells - cells are the basic units of life - all cells come from pre-existing cells.






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






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