The electrochemical gradient refers to
A. the difference in concentration of a substance between two areas.
B. the difference in electrical charge between two areas.
C. the combination of electrical and chemical gradients between two areas.
D. the resistance a membrane has to allowing any charged chemical to pass through it.
C
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A) cartilage B) nervous C) epithelial D) connective E) muscle
Changing of the diameter of the trachea is provided by (the)
A) sternocleidomastoid muscles. B) C-shaped rings. C) intrinsic laryngeal muscle. D) trachealis muscle. E) None of the answers are correct.
In addition to producing melanin, melanocytes play a role in immunity
Indicate whether the statement is true or false
What is the role of myosin phosphatase?
A. To serve as an enzyme that removes phosphate from myosin B. To form shallow invaginations of the plasma membrane C. To aid in rapidly developing action potentials D. To maintain relatively constant tension for a period of time E. To function as the intracellular cytoskeleton