Every cell has a built-in biochemical pathway that, if triggered, causes the cell to execute itself as a result of mitochondrial leakage of hydrogen peroxide
a. True
b. False
Indicate whether the statement is true or false
False
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Which of the following might increase the risk for cardiovascular disease?
A. stopping smoking B. exercise C. maintaining normal cholesterol levels D. chronic stress E. lots of fiber in the diet
Pepsinogen
A. is secreted by parietal cells. B. is activated by salivary amylase in swallowed food. C. is packaged in zymogen granules. D. operates optimally at a pH of 5 or more. E. helps to form peptide bonds.
The external auditory canal ends at the
A) cochlear oval window. B) tympanic membrane. C) malleus. D) vestibule. E) pinna.
Which statement is correct?
a. In presynaptic inhibition, another neuron inhibits an excitatory presynaptic input. b. An IPSP depresses information fed into the cell from an inhibitory presynaptic input. c. Not all axon terminals of an inhibitory neuron release inhibitory neurotransmitter. d. During presynaptic inhibition, there is no change in presynaptic membrane potential. e. An IPSP decreases the potential of the postsynaptic neuron.