A bulk mineral that is essential for normal muscle and neuron function as well as for bone structure is
A) sodium.
B) potassium.
C) calcium.
D) magnesium.
E) selenium.
C) calcium.
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Membrane fluidity can be increased by __________ of the plasma membrane
A) Increasing the lengths of fatty acid chains B) Decreasing the number of double bonds in the fatty acids C) Decreasing the phosphatidylcholine to phosphatidylethanolamine ratio D) Decreasing the cholesterol content Fill in the blank with the correct answer.
Which of these connect the cytosol of adjacent cells?
a. gap junctions b. tight junctions c. demosomes d. basement membrane
What is the process by which the acrosome membranes of sperm break down and release enzymes that digest holes in the surrounding oocyte membrane?
A) the acrosomal reaction B) cleavage C) ovulation D) implantation
A distinct bone marking on the dorsal surface of the scapula is the
A) infraspinous fossa. B) glenoid cavity. C) subscapular fossa. D) scapular spine. E) coracoid process.