Substrate molecules bind to enzymes at the
A) allosteric sites.
B) modification sites.
C) reaction sites.
D) active sites.
E) ionic sites.
D) active sites.
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The movement of food is a function of ________ muscles
A) Sensory B) Cardiac C) Striated D) Involuntary
Facial muscles are unusual in that they
A. are not involved in movement. B. insert and sometimes originate on skin and connective tissue. C. are not involved in facial expression. D. represent a combination of first-class and second-class lever systems. E. are smooth muscles rather than skeletal muscles.
Lacteals
A. secrete intestinal juice. B. absorb the products of fat digestion. C. connect directly to the liver. D. are found only in the large intestine. E. All of the choices are correct.
Blood capillaries that supply nourishment for the epidermis are located in the
A. subcutaneous layer. B. epidermis proper. C. reticular connective tissue. D. dermal papillae. E. epidermal ridges.