Biology

General Science (Easy)

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Which among the following elements are present in all proteins ?

Carbon
Hydrogen
Oxygen
Nitrogen

Mark the correct answer using the code given below:

2, 3 only

1, 2, 4 only

1, 3, 4 only

1, 2, 3, 4

Explanation:

Proteins are organic molecules composed of Carbon, Hydrogen, Oxygen and Nitrogen.
Proteins are crated by linking together amino acids into protein links called polypeptide chains. There are twenty amino acids of which 12 can be synthesized by the human body and 8 must be ingested in the foods we eat. These 8 are referred to as the essential amino acids.

By: Parvesh Mehta

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