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. chemical elements from sugars can be used to make amino acids. essential amino acids are made in human body cells. cells combine amino acids to make new proteins. all amino acids must be consumed in foods.

Explanation:

• The text states that some amino acids are made by combining carbon, hydrogen, and oxygen from sugar molecules. So, chemical elements from sugars can be used to make amino acids.
• It clearly says that 9 essential amino acids cannot be synthesized in our cells and must be obtained from food. So, the statement “Essential amino acids are made in human body cells” is false.
• The first sentence “Cells make proteins from amino acids” implies that cells combine amino acids to make new proteins.
• The text mentions that some amino acids can be made in our cells (not all need to be consumed in foods). So, the statement “All amino acids must be consumed in foods” is false.

Answer:

• Chemical elements from sugars can be used to make amino acids.
• Cells combine amino acids to make new proteins.