Carbohydrates are used in our bodies mainly for _____.
A. membrane construction
B. structural molecules, such as hair and fingernails
C. building genetic material
D. energy storage and release
E. lipid storage
Ans: D. energy storage and release
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With which of the following disease are oral
bacteria NOT associated?
a. periodontitis. b. atherosclerosis. c. coronary atery disease. d. tetanus. e. oral bacteria are NOT associated with any of these diseases except periodontitis
When a farmer grows cotton containing the gene for Bt toxin, they often leave a strip of non-Bt cotton around the outside of the field for what reason? Select one:
a. to allow some rr bollworm caterpillars to survive b. to allow the non-Bt and Bt cotton plants to cross pollinate c. because the non-Bt cotton does not drive the moths and caterpillars to extinction d. because the non-Bt cotton grows better e. to allow some RR bollworm caterpillars to survive and limit selection pressure for resistance
What kind of circulatory system do fishes have?
A) closed circulatory system B) open circulatory system C) quadruple loop D) double loop
You have been asked to explain to a high school class the first law of thermodynamics and how this law affects the students' lives. Using your own words, describe the first law of thermodynamics, and give an example (other than the examples described in
the chapter). What will be an ideal response?