Typically, the resting membrane potential of a neuron is
A. 7 V.
B. 700 mV.
C. -7 V.
D. -70 mV.
E. 0 mV.
D
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Embryonic stem cells growing in a lab dish are bathed in a "cocktail" of chemicals that cause them to specialize into branching networks of single-nucleated cells that pulsate in unison. This tissue is most likely
A. epithelial tissue. B. cardiac muscle. C. skeletal muscle. D. smooth muscle.
The anterior ________ branch of the left coronary artery supplies blood to both ventricles.
Fill in the blank(s) with the appropriate word(s).
Match the following:
A) Digestion B) Hydrolysis C) Absorption D) Peristalsis 1) Wavelike smooth muscle contractions that move foodstuffs through the alimentary tube. 2) Chemical or mechanical process of breaking down foodstuffs to substances that can be absorbed. 3) Enzymatic breakdown of any type of food molecule. 4) Process by which the products of digestion pass through the lumen of the gastrointestinal tract into the blood or lymph.
Which cells are involved in both humoral and cellular immunity?
A. Memory cells B. Plasma cells C. Thelper cells D. Tcytotoxic cells