The power used by most bacterial flagellar motors is produced by ________.
A. ATP hydrolysis
B. synthesis of glucose
C. proton motive force (PMF)
D. All of the choices are correct.
Answer: C
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Complete reproductive isolation is evidence that what has occurred?
a. extinction b. speciation c. polyploidy d. hybridization e. gene flow
Gas exchange requires a surface that is both ________
A) durable and stiff B) protected within the body and connected to the circulatory system C) thin and moist D) permeable to oxygen and impermeable to carbon dioxide
A neuron that transmits an impulse to the central nervous system after the neuron is stimulated by the environment is called a(n) __________.
A) motor neuron B) sensory neuron C) autonomic neuron D) effector E) interneuron
Deficiencies of brush border enzymes in the small intestine would not affect the complete digestion of ________.
A. DNA and RNA B. sucrose C. proteins D. starch E. fats