Which part of the eye contains billions of molecules of vitamin A?
a. Cornea
b. Sclera
c. Retina
d. Macula
e. Choroid
Answer: C
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In malnutrition, a primary deficiency is one in which a person
A) excretes too much of a nutrient. B) does not have an adequate intake of a nutrient. C) cannot efficiently utilize a nutrient. D) cannot absorb enough of a nutrient.
Which is true about saturated fats?
A. Saturated fats tend to be solid at room temperature. B. Saturated fats raise blood cholesterol. C. Saturated fats provide 9 kilocalories per gram. D. Many animal fats are rich in saturated fats. E. All of these statements are true.
What reaction has to occur each time light reaches the eye before the product of this reaction can be recombined with opsin to reform rhodopsin?
a. Cis-retinal must be reconverted to trans-retinal b. Trans-retinal must be reconverted to cis-retinal c. ?-carotene must be reconverted to preformed vitamin A d. Preformed vitamin A must be reconverted to ?-carotene
Beriberi is the deficiancy disease associated with _____?
A. Folate B. Niacin C. Thiamin D. Riboflavin