What percent of our DNA consists of

transposable elements?



a. 4.5
b. 14.5
c. 45
d. 65
e. 90


C

Biology & Microbiology

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Discuss the functions of the large intestine

What will be an ideal response?

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Which of the following is not part of the activation program of the egg?

a. increase in aerobic respiration b. capacitation c. activation of enzymes d. increase in protein synthesis e. completion of meiosis

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Concentrations of trace elements in an environment above what is required by organisms generally have no effect on those organisms. Which of the following is a valid response to this statement?

a. True. Only trace element limitation can lead to disease among organisms. b. True. Most organisms have evolved adaptations that allow them to tolerate very high concentrations of trace elements in the environment. c. False. Elevated concentrations of some trace elements such as cobalt and chromium can be toxic. d. False. Elevated concentrations of trace elements such as chromium and phosphorus can be toxic. e. False. Increasing the concentration of trace elements above what is required generally has a beneficial effect on organisms.

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How does evolutionary change occur?

A. It may involve horizontal gene transfer. B. Through the modification of characteristics in a preexisting population. C. It may involve vertical descent with mutation. D. All of these choices are correct. E. None of these choices are correct.

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