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






2. 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.






3. Are the organelles where cellular respiration occurs.






4. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






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






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






7. Covers and protects the leaf.






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






9. 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.






10. Anabolism






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






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






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






14. The pituitary gland.






15. Breaking down






16. The transfer of electrons.






17. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.






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






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






20. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






21. The sharp boundary of an ecosystem.






22. Layer that will become the gut lining as well as some accessory structures.






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






24. 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.






25. The phyla of sponges.






26. 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).






27. 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






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






29. 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.






30. Inorganic phosphate






31. Is an abundant element found in protoplasm. Together with oxygen - hydrogen - and nitrogen - it composes over 90% of cellular structure.






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






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






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






35. The number of organisms in a given community - can be above or below the carrying capacity.






36. 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).






37. In DNA Guanine pairs with...






38. The vocal cords are found in the larynx.






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






40. 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






41. 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.






42. 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.






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






44. Is the outermost layer of cells of the stem.






45. An orienting response to light.






46. Consists of undifferentiated cells capable of quick growth and specialization. It is responsible for elongation of the stem.






47. Subsets below the kingdom level






48. 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.






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






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