If someone experiences damage to the hypothalamus and no longer produces ADH, what effect will this have on kidney function?
What will be an ideal response?
The person will produce an enormous volume of dilute urine. The collecting tubules will be impermeable to water from the urine flowing down them and will not be able to return water to the general circulation.
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Attenuation occurs in a laboratory, because
A) nonvirulent or weakly virulent mutants grow faster in vitro in laboratory media. B) pathogens lose virulence with age. C) patients are generally treated with drugs that induce attenuation. D) None of the answers are correct.
The cell wall component algin is
(a) found in the brown algae. (b) used in the production of ice cream. (c) used as a medium on which microorganisms are grown. (d) both a and b.
The synaptic cleft is
A. a deep furrow in a postsynaptic cell where signals are received. B. specialized channels in the presynaptic membrane that allow the passage of ions. C. the narrow extracellular space between the presynaptic and postsynaptic neurons at the synapse. D. recesses in the postsynaptic neuron membrane where neurotransmitters bind. E. the area of neuronal membrane between the dendrites and the axon hillock.
During exercise, which pathway produces the
most energy?
a. lactate fermentation b. anaerobic respiration c. aerobic respiration d. use of stored ATP e. all of these produce the same amount of energy