Estrogen, progesterone, androgen are all sex hormones that originate from cholesterol which is converted into ______, the precursor of all steroid hormones.
Fill in the blank(s) with the appropriate word(s).
Ans: pregnenolone
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The training effect, in which individuals experience improvements in physical fitness as they continue a regular exercise regimen, is a product of
A. increased number of capillaries in muscles. B. increased efficiency of the heart. C. increased number of mitochondria in muscle cells. D. All of the choices are correct.
The most common food intoxication is ____
A) E.coli B) toxoplasma C) botulism D) staphylococcal food poisoning
A low Healthy Eating Index (HEI) score is associated with overweight and obesity
a. True b. False Indicate whether the statement is true or false
Which activity fits the definition of vigorous-intensity?
a. brisk walking b. basketball c. cycling d. raking leaves e. water aerobics