Question

in phenylketonuria, an individual cannot break down the amino acid phenylalanine. molecules that include phenylalanine build up in the blood, which causes intellectual disability and other symptoms. this inherited disease can be controlled by following a diet that is very low in
a carbohydrates.
b cholesterol.
c protein.
d nucleic acids.

question 16
0.2925 points
nucleic acids include
a proteins and dna.
b rna and dna.
c enzymes and rna.

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Explanation:

First Question (Phenylketonuria Diet)

Phenylketonuria (PKU) patients can't break down phenylalanine, an amino acid. Proteins are made of amino acids, so a diet low in protein reduces phenylalanine intake. Carbohydrates, cholesterol, and nucleic acids don't primarily contain phenylalanine.

Nucleic acids are biological macromolecules. The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Proteins and enzymes are different macromolecules (proteins are made of amino acids, enzymes are mostly proteins), so options with proteins or enzymes are incorrect.

Answer:

C. protein

Question 16 (Nucleic Acids)