What is the most likely explanation for the body's higher metabolic efficiency of converting a molecule of corn oil into stored fat compared with a molecule of sucrose?
a. The enzymes specific for metabolizing absorbed fat have been found to have higher activities than those metabolizing sucrose.
b. The absorbed corn oil is transported to fat cells at a faster rate than the absorbed sucrose, thereby favoring the uptake of corn oil fat.
c. There are fewer metabolic reactions for disassembling the corn oil and re-assembling the parts into a triglyceride for uptake by the fat cells.
d. Because corn oil has a greater energy content than sucrose, conversion of these nutrients into stored fat requires a smaller percentage of the energy from the corn oil.
e. The metabolic reactions for disassembling the corn oil and re-assembling the parts into a triglyceride for uptake by the fat cells require less energy themselves.
Question 2
Storing excess energy from dietary carbohydrate as body fat requires ____ percent of the ingested energy intake.
a. 5
b. 15
c. 25
d. 35
e. 45
(a) Masai from East Africa have body types adapted to warm climates.
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