What is the overall purpose of the light reactions in photosynthesis?
What will be an ideal response?
To convert solar energy into chemical energy that cells can use to do work.
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What effect does the nervous system have on the heart rate?
A. Stimulation by parasympathetic nerves causes the heart rate to slow down. B. Stimulation by sympathetic nerves sets the resting heart rate of the pacemaker cells in the SA node. C. Stimulation by sympathetic nerves causes the pacemaker cells of the AV node to depolarize more rapidly than the pacemaker cells of the SA node. D. Stimulation by either the sympathetic or parasympathetic nerves causes pacemaker cells in the SA node to depolarize more slowly. E. The nervous system does not directly affect the heart rate.
Which of the following statements is correct regarding promoters?
A. Promoters are regions of DNA that indicates the start of a gene B. Promoters act as a "start here" signal to help control gene expression C. Promoters are regions of DNA where RNA polymerase can bind to start transcripton D. All of the above are correct
Which of the following would be more likely to affect an animal's habitat than its niche?
a. rainfall b. prey abundance c. predators d. defense mechanisms e. species interactions
Discuss why a doctor would prescribe an ACE inhibitor to a patient with a history of high blood
pressure. What will be an ideal response?