As cells are pushed from the deeper portion of the epidermis toward the surface,
A. they become dermal cells.
B. they die.
C. their supply of nutrients improves.
D. they divide continually.
Answer: B
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Disuse of the joints ________, which hastens stiffening.
A. hampers blood flow B. degenerates cartilage C. causes arthritis D. causes injuries
Osmotic pressure forces molecules in the blood out through capillary walls.
Answer the following statement true (T) or false (F)
The plasma membrane does not include
A) integral proteins. B) glycolipids. C) phospholipids. D) cholesterol. E) silk mesh.
Both alpha-bungarotoxin and curare bind to the same neurotransmitter receptor, but only curare binds reversibly. Which receptor is involved? List some locations for this receptor. Would either toxin be appropriate to use as a paralytic during surgery? Explain your answer. Are all such receptors necessarily affected by a given toxin in the same way? Explain the significance of your answer.
What will be an ideal response?