How do hair permanents make straight hair curly?
Hair proteins contain many sulfur-containing amino acids that stabilize the hair’s structure and determine whether it is naturally straight or curly. Permanent solutions work by first breaking the disulfide bonds with an alkaline solution—this denatures the protein—and then forming new bonds which “set” the hair in the style desired.
Nutritional Science
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Soft drinks are the main source of increased total caloric intake in the American diet
Indicate whether statement is true or false.
Nutritional Science
The recommended intake of vitamin D was recently increased to _____ mcg daily for adults
a. 10 b. 15 c. 20 d. 25 e. 30
Nutritional Science
During the first trimester, the pregnant woman should:
a. reduce kcalories to lessen total weight gain with the pregnancy. b. increase her protein intake to 35% of the total kcalories. c. increase her kcaloric intake by 450 kcalories. d. not increase kcalories.
Nutritional Science
About 20 percent of alcohol is absorbed through the ____
a. mouth b. esophagus c. stomach d. small intestine e. large intestine
Nutritional Science