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






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






3. 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.






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






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






6. 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






7. Plants and animals obtain usable nitrogen






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






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






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






11. Are the organelles where cellular respiration occurs.






12. Is a phylum that contains jellyfish - hydra - etc.






13. Is the earliest period of the Paleozoic era. Began with the Cambrian explosion - this explosion of life resulted in the representatives of most of the modern phyla being present.






14. Is a coenzyme required in the synthesis of collagen.






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






16. Is composed of an anterior and posterior lobe. The stalk of the lobe is connected to the hypothalamus. Antidiuretic Hormone (AH) is produced in the hypothalamus and stored in the posterior pituitary. Upon nervous stimulation from the hypothalamus - t






17. 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






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






19. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






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






21. A cell will only remain stable if the surface area of the plasma membrane maintains a __________ with the volume of the cytoplasm.






22. Veins in the leaf and are also distributed throughout the stem






23. 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.






24. Protein synthesis






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






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






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






28. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






29. Ended with the extinction of the dinosaurs.






30. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






31. Studied the relationships between traits expressed in parents and offspring and the genes that caused the traits to be expressed.






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






33. Subsets below the kingdom level






34. 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






35. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






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






37. Is comprised of all the organisms that interact within a given ecosystem whether or not it is at carrying capacity.






38. Controls hunger and thirst






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






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






41. The phylum of insects (bees).






42. In DNA Thymine pairs with...






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






44. Covers and protects the leaf.






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






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






47. 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.






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






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






50. The transfer of electrons.