A subunit of protein is a(n)
A. amino acid.
B. nucleic acid.
C. fatty acid.
D. phospholipid.
A. amino acid.
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Which of the following statements concerning the microbial loop is not true?
A. Microbes consume dissolved organic matter. B. Microbes constitute particulate organic matter for zooplankton consumption. C. Marine viruses contribute to the production of dissolved organic matter. D. All of the choices are correct.
The larger the initial size of a population, the faster it can reach K
a. true b. false
Which of the following is (are) used by microorganisms to become resistant to a particular drug?
A. An alternate metabolic pathway that bypasses the drug-sensitive step B. Exclusion of the drug from the cell C. Enzymatic inactivation of the drug D. All of the choices are correct.
In which combination of locations would one who is searching for the gametophytes of "flower of stone" have the best chance of finding them?
1. moist soil 2. underground, nourished there by symbiotic fungi 3. south- or west-facing slopes 4. permanently shady places 5. far from any flower of stone sporophytes A) 1 only B) 1 and 2 C) 1, 2, and 4 D) 1, 2, and 5