Question

cells make proteins from amino acids. some amino acids can be made in our cells by combining carbon, hydrogen, and oxygen from sugar molecules. but 9 of the 20 common amino acids cannot be synthesized in our cells. these 9 essential amino acids can only be obtained by eating protein - rich foods, like animal meat, eggs, fish, nuts, beans, and dairy products.
select the true statements.
essential amino acids must be consumed in foods.
all amino acids are made in human body cells.
some amino acids can be made with chemical elements from sugars.
cells make new proteins by combining amino acids.
submit

Explanation:

• For "Essential amino acids must be consumed in foods": The text says 9 essential amino acids "can only be obtained by eating protein - rich foods", so this is true.
• For "All amino acids are made in human body cells": The text states that 9 essential amino acids "cannot be synthesized in our cells", so this is false and should not be selected.
• For "Some amino acids can be made with chemical elements from sugars": The text mentions "Some amino acids can be made in our cells by combining carbon, hydrogen, and oxygen from sugar molecules", so this is true.
• For "Cells make new proteins by combining amino acids": The text says "Cells make proteins from amino acids", so this is true.

Answer:

• Essential amino acids must be consumed in foods.
• Some amino acids can be made with chemical elements from sugars.
• Cells make new proteins by combining amino acids.