During _____, special carriers transport substances across cell membranes.
Fill in the blank(s) with the appropriate word(s).
Facilitated diffusion
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Alfred is an African-American long-distance runner whose BMI classifies him as obese. Why might this be?
a. Blacks have a higher average height than whites. b. Blacks have denser bones and higher body protein concentrations than whites. c. Blacks tend to have different proportions of brown and white adipose tissue than whites. d. The fat pads in blacks are situated primarily around the hips, whereas in whites the pads are primarily abdominal. e. Blacks have both lower average height and higher average weight than whites.
What is an example of a change in gastrointestinal physiology that occurs with aging?
a. Increased upper esophageal pressure b. Atrophy of the small intestine mucosa c. Enhanced excretion of hydrochloric acid in the stomach d. Increased incidences of diarrhea e. Overproduction of saliva in the mouth
The production and function of sperm may decrease if the male __________.
Fill in the blank(s) with the appropriate word(s).
Do farm-raised salmon contain less ?-3 fatty acids than wild salmon?
What will be an ideal response?