Explain buffers
A buffer is a substance or a group of substances that reacts with either acid or base in order to decrease the effect of acid or base on the pH of a solution.
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Which phrase would not be part of an assessment objective?
a. "state information" b. "assess practices" c. "identify attitudes" d. "determine services"
Body mass index is calculated by:
a. dividing weight in pounds by height in centimeters. b. dividing weight in kilograms by height in meters squared. c. dividing height in inches by weight in kilograms. d. dividing weight in kilograms by height in meters.
Which of the following foods or beverages is a major source of added sugars in American diets?
A. Fruit B. Flavored Greek yogurt C. Sugar-sweetened soft drinks D. Ready-to-eat cereals
Which of these B vitamins is required for RNA synthesis?
a. niacin b. thiamin c. riboflavin d. vitamin B12