True or False: A researcher hopes to estimate the size of an E. coli population in a liter of seawater. To do this, he can count the number of E. coli bacteria in a milliliter of seawater and multiply this number by 1000
A. true
B. false
A
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Organisms that grow in the mud under relatively nonturbulent bodies of water are likely to be
A. obligate aerobes. B. thermophilic. C. anaerobes. D. barophilic.
What is the function of the inverted repeat in the termination sequence of a rho-independent terminator? What would happen if a mutation occurred in this region?
What will be an ideal response?
Which of the following processes does NOT require ATP?
a. facilitated diffusion b. active transport c. phagocytosis d. endocytosis
During the initiation of nitrogen-fixation nodules, a host plant with genetic mutations releases altered forms of flavonoids. What is the likely consequence of this?
A. Infection threads will grow in the wrong direction. B. More nodules will form than necessary. C. Nodules will be misshapen. D. The bacteria will not produce any Nod factors. E. The bacterial will produce higher levels of Nod factors.