Which of the following could be a potential consequence of unchecked human population growth?
a. famine in areas that are densely populated
b. drought in areas that are sparsely populated
c. fewer diseases in densely populated areas
d. enhanced resource availability in populated areas
a. famine in areas that are densely populated
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Which one of the following is NOT one of the general classes of macromolecules that are necessary for cellular function?
A. Nucleic acids B. Proteins C. Ions D. Carbohydrates E. Lipids
A muscle fiber contracts by a sequence of events initiated by the binding of acetylcholine to its receptor. Which of the following is the correct sequence?
I-The calcium-troponin complex pulls tropomyosin away from the myosin binding sites of actin. II-The freed-sites of actin bind to myosin to form cross bridges. III-Calcium ion binds to the troponin. A. II, III, and I B. III, II, and I C. III, I, and II D. I, III, and II E. I, II, and III
The body is partitioned into several fluid-filled spaces that are physically separated without connections to one another. This arrangement makes it difficult for the immune system to function at its optimum capacity.
a. true b. false
Which drug(s) would you recommend to treat penicillin-resistant Neisseria gonorrhoeae?
a. ampicillin b. cefixime c. ceftriaxone d. both cefixime and ceftriaxone