In certain amino acids, which one of the following elements is found in addition to carbon , hydrogen, nitrogen and oxygen?
A. Phosphorus
B. Zinc
C. Calcium
D. Sulphur
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Answer:
Proteins are composed of molecules called amino acids, and each amino acid contains four elements: hydrogen, oxygen, nitrogen and carbon. Some might also contain a fifth element, sulfur.
Explanation:
therefor, sulphur is your answer.
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