Biology
Grade-7
Easy
Question
Protein cannot be synthesized in the absence of __.
- Oxygen
- Nitrogen
- Phosphorus
- Hydrogen
Hint:
The amino group is important for protein synthesis.
The correct answer is: Nitrogen
- Carbon, hydrogen, and oxygen are common for all biomolecules (carbohydrates, proteins, fats and nucleic acids)
- Proteins are made up of a sequence of amino acids
- The general formula for amino acids is R-CH(NH2)-COOH
- The amino group (NH2) is a protein that contains nitrogen
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