The following substances were detected in a slice of enriched bread. Which of the substances is a not a direct food additive?
A. Sugar
B. Folic acid
C. Thiamin
D. Plastic wrap
Answer: D
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Neural tube defects in the newborn may be caused by a folic acid deficiency. _________________________?
Indicate whether the statement is true or false
What would be the best advice to give for physical activity for a person with diabetes?
A. although physical activity has health benefits, it does not improve status of individuals with diabetes B. individuals with type1 diabetes should always avoid strenuous activity because it may cause too much of a drop in blood glucose C. physical activity needs to be strenuous enough to result in weight loss for it to be of benefit in type 2 diabetes D. regular physical activity is beneficial for controlling weight and tissue sensitivity to insulin in type 2 diabetes
Which of the following statements accurately describes vitamin A’s role in vision?
a. Retinoic acid is the form required for synthesis of retinoblasts. b. Light causes retinal to shift from a cis to a trans configuration. c. Retinol is the form bound to beta-carotene in the corneal membrane. d. Pigment molecules in the retina are composed of vitamin A and the protein elastin. e. Retinol protects the visual cortex from teratogenic chemicals.
Cramps and other side effects of menstruation can be traced back to the production of _____ by the uterus
a. progesterone b. estrogen c. prostaglandins d. luteinizing hormone e. gonadotropin-releasing hormone