Sugar acts as a food preservative by
A. reducing the amount of free water in food.
B. increasing the acidity of food.
C. directly killing disease-producing microbes.
D. increasing the water activity of the food.
Answer: A
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Food that has been chewed and moistened in the mouth is referred to as
A) chyme. B) feces. C) a bolus. D) chyle.
Most of the sodium consumed is absorbed from the
A) stomach. B) mouth. C) large intestine. D) small intestine.
Which mineral replaces some of the hydroxide ions in hydroxyapatite to help protect against cavities in teeth??
A) ?cobalt B) ?vanadium C) ?boron D) ?silicon
Joelle heard that vitamin K can strengthen her bones so she started taking megadoses of it daily. What negative effect could this have?
A. get her banned from sports tournaments B. lower her ability to absorb vitamins C and E C. poison her by building up too much vitamin K in her body D. cause hair loss and a severe case of acne