Which of the following organic groups does an enzyme belong to?
A. nucleic acid
B. lipid
C. vitamin
D. carbohydrate
E. protein
E
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Simple sugars are carbohydrates
Indicate whether this statement is true or false.
The uterine enlargement that occurs during the first 10 weeks of pregnancy is mostly the result of
A. growth of the conceptus from a zygote to a fetus. B. amniotic fluid production as well as growth of uterine muscle and the placenta.
The bending of light rays is called reflection
Indicate whether the statement is true or false
Which of the following skin changes is usually associated with aging?
A. There is an increase in the number of elastic fibers in the skin. B. Skin becomes thicker. C. The amount of collagen in the dermis increases. D. Loss of subcutaneous tissue contributes to sagging of the skin. E. Localized increase in sebaceous glands leads to dry skin.