Methanogens link ATP synthesis to methanogenesis by ________.
A. substrate-level phosphorylation
B. the reverse TCA cycle
C. electron transport to generate proton motive force
D. the use of bacteriorhodopsin
Answer: C
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Of the following microtubule-interacting proteins, which might you potentially investigate as a mechanism for disrupting cell division in actively replicating tumor cells?
A) Tau B) +-TIP proteins C) catastrophins D) G-actin E) FtsZ
One advantage to asexual reproduction is that it:
A) enhances genetic variability B) allows individuals in the species to endure long periods of unstable environmental conditions C) results in elimination of harmful mutations from the genome D) enables individuals in the species to rapidly colonize habitats that are favorable to that species E) produces offspring that respond effectively to new pathogens and parasites
A confused frog deposits its sperm onto a toad's eggs as they are being laid. No offspring develop because the frog's sperm are unable to penetrate the toad's egg. This is an example of
A. gametic isolation. B. behavioral isolation. C. mechanical isolation. D. habitat isolation. E. temporal isolation.
Which structural feature is common in BOTH Planctomycetes and Verrucomicrobia but RARELY found in bacteria outside these two phyla?
A) intracellular compartmentalization B) prosthecae appendages C) sheathlike toga cell envelopes D) tubulins