Biology
Grade-7
Easy
Question
Which of the following is required for the formation of protein?
- Oxygen
- Hydrogen
- Nitrogen
- Phosphorus
Hint:
All amino acids contain this atom.
The correct answer is: Nitrogen
- Nitrogen is the unique atom present in proteins
- Amino acids can be represented as R-CH(NH2)-COOH
- All amino acids contain amino groups (
)
- Besides, carboxyl and R group specific for the amino acid is also found in the amino acid
- The excess nitrogen consumed through food is eliminated in the form of urea by humans
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