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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Beriberi is the deficiancy disease associated with _____?
A. Folate B. Niacin C. Thiamin D. Riboflavin
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.
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
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.