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Mouse mutations can affect an animal's appetite and eating habits. The ob gene produces a satiety factor (the hormone leptin). The db gene product is required to respond to the satiety factor (the leptin receptor).
-PKU (phenylketonuria)is a hereditary condition in which infants and young children cannot ingest any more than tiny amounts of the amino acid phenylalanine without serious neurological results. This damage can be prevented by a severe restriction of phenylalanine in the diet. Which of the following is the nutritional concept that forms the basis for this preventive treatment?

Question

Quizplus · Accepted Answer

Phenylalanine is an essential amino acid, but in individuals with PKU, it cannot be metabolized properly. Therefore, severely restricting phenylalanine in the diet helps prevent neurological damage. This is based on the concept of essential nutrients, which are nutrients that the body cannot produce on its own and must be obtained from the diet.

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