Explain how defective DNA disrupts the function of proteins in the following diseases: phenylketonuria (PKU), sickle cell anemia, and cystic fibrosis.

What will be an ideal response?


Answers will vary.

Nutritional Science

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Red blood cells and the brain rely on which of the following for energy?

A. glucose B. glucagon C. glycerol D. short-chain fatty acids

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Examples of foods that are the highest in preformed vitamin A compounds include:

a. carrots and pumpkins b. fish and dairy products c. mangoes and tangerines d. tomatoes and red peppers

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In general, fresh fruits and vegetables are good sources of ________.

A. potassium B. iron C. calcium D. zinc

Nutritional Science

All of the following vitamins are known to function as antioxidants EXCEPT:

1.biotin. 2.beta-carotene. 3.vitamin E. 4.vitamin C.

Nutritional Science