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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. The trachea includes the windpipe or larynx in its upper portion - and the glottis - an opening that allows the gases to pass into the two branches known as the bronchi.






2. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






3. Fruits that develop from a single ripened ovary (apple - olive - acorn - cucumber).






4. 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






5. 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.






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






7. 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.






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






9. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






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






11. Is the waxy protective outer coating of leaves.






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






13. Respiratory organs within insects






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






15. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






16. Occurs when an individual from an adjacent population of the same species immigrates and breeds with a member of a previously locally isolated group - resulting in a change in the gene pool.






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






18. When the water concentration inside and outside the cell is equal - It is said to be in an...






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






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






21. Breaking down






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






23. The phyla of round worms.






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






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






26. 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.






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






28. Contains many genes and is a structure comprised of linear DNA and associated proteins.






29. 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.






30. Plants and animals obtain usable nitrogen






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






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






33. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






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






35. Contains optic lobes - controls sight.






36. In order to become an established part of an island ecosystem there must be a populations large enough to ensure _________ - a food source - a suitable habitat - and a source of moisture.






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






38. 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.






39. 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






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






41. In both living and non-living environments.






42. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






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






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






45. Algae and Protozoa belong to the kingdom...






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






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






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






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






50. All store energy within their chemical bonds.







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