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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 period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






2. Carbon - Hydrogen - Oxygen - and Nitrogen






3. An orienting response to light.






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






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






6. 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.






7. Synthesis






8. A reaction that adds water to another compound. (2 hydrogens - 1 oxygen).






9. 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.






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






11. Is found on the stem between nodes.






12. Controls olfactory lobes (smell)






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






14. 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






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






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






17. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






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






19. Includes all living and nonliving components of the Earth to support living things.






20. The part of the earth that contains all living things - including the atmosphere (air) - the lithosphere (earth) - and the hydrosphere (water).






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






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






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






24. The total amount of genetic information available for a given species.






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






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






27. 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






28. The cells of a developing embryo (at the gastrula stage) differentiate into layers - that will later develop into different tissues and organs - including the mesoderm - ectoderm - and endoderm.






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






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






31. Anabolism






32. The sharp boundary of an ecosystem.






33. 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






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






35. 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






36. Respiratory organs within insects






37. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






38. 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.






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






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






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






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






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






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






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






46. In DNA Guanine pairs with...






47. 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.






48. Process in which elements - chemical compounds - and other forms of matter are passed from one organism to another and from one part of the biosphere to another.






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






50. Is disorganized - unravelled - DNA with histones attached.