During fermentation, ATP is usually produced by
a. oxidative phosphorylation.
b. the citric acid cycle.
c. the proton motive force.
d. substrate-level phosphorylation.
Answer: D
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Why does the activity of the dynein motor proteins in an axoneme produce a "whip-like motion"?
A. The motor proteins are attached to the outer microtubule doublets. B. The motor proteins bind to an adjacent outer microtubule doublet. C. The outer microtubule doublets are all connected through cross-linking proteins. D. All of the above are correct.
Standard microbiological practices include all of the following EXCEPT
A. work space should be disinfected only when contaminating spills occur. B. eating, drinking, manipulation of contact lenses, and the use of cosmetics, gum, and tobacco products are strictly prohibited in the lab. C. hair longer than shoulder length should be tied back. D. lab personnel should know how to use the emergency eyewash and shower stations.
Which of the following is a major cause of health-care-associated infections in the United States?
A. Streptococcus pneumoniae B. Streptococcus pyogenes C. Staphylcoccus aureus D. Alpha hemolytic streptococci
The two brain hemispheres are connected via what structure?
a. thalamus b. basal ganglia c. corpus callosum d. amygdala