In M. xanthus, ________ motility is a kind of twitching that is governed by the production of retractable type IV pili, only observed when cells are in a group.
Fill in the blank(s) with the appropriate word(s).
(S)
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The ATP made during glycolysis is generated by
A. substrate-level phosphorylation. B. electron transport. C. photophosphorylation. D. chemisosmosis. E. oxidation of NADH to NAD+
How did mitochondria and chloroplasts arise in eukaryotic cells?
A) Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell B) Via binary fission, where bacteria divided to create mitochondria and chloroplasts C) Via the endomembrane system that engulfed mitochondria and chloroplasts D) Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts
Refer to the accompanying figure. Which structure integrates incoming signals?
a. 2
b. 4
c. 5
d. 6
e. 8
How many of these species probably have a cell wall that consists partly of an outer membrane of lipopolysaccharide?
A) only one species B) two species C) three species D) four species