Aging may be detrimental to the function of the digestive tract because
A) the effects of cumulative damage become apparent.
B) the rate of epithelial stem cell division increases.
C) the tone of the smooth musculature increases.
D) aged cells and tissues require more nutrients, but are less efficient at processing them.
E) None of the answers are correct.
A) the effects of cumulative damage become apparent.
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What type of neuron of the parasympathetic division exits the brain stem?
A) somatic motor neuron B) preganglionic neuron C) sensory neuron D) ganglionic neuron E) astrocyte
Wildlife can never be returned to the wild after it has been cared for by a rehabilitator
Indicate whether the statement is true or false
Which of the following cell organelles produces secretory vesicles?
A)Lysosome B)Mitochondrion C)Peroxisome D)Golgi apparatus E)Rough endoplasmic reticulum
Microtubules are composed of protein subunits known as:
A) myosin. B) keratin. C) tubulin. D) actin.