Phospholipids are important components of the plasma membrane. What does "A" represent on the diagram?
A. phosphorus
B. oxygen
C. nitrogen
D. polar (hydrophilic) region
E. nonpolar (hydrophobic) region
D
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Swallowing propels a bolus of food from the mouth through the pharynx and esophagus into the stomach via a complex, sequential, multiple-response reflex
Indicate whether the statement is true or false
Pulmonary arteries have ________ blood pressure compared to systemic arteries.
A. considerably lower B. a little higher C. similar D. a little lower E. considerably higher
Helper T cells secrete several interleukins that serve collectively as a(n):
a. apoptosis factor b. interleukin growth factor c. histamine regulator d. T-cell growth factor e. B-cell growth factor
Which abdominopelvic regions have both a right and a left side?
A. Only the hypogastric and hypochondriac B. The lumbar, iliac, and hypochondriac C. The hypochondriac, lumbar, and hypogastric D. Only the lumbar and iliac E. Only the iliac and hypochondriac