MHT CET Medical202624 April 2026Morning ShiftBiologyMineral NutritionActual
Which among the following represents amidation during nitrogen fixation in plants?
Options
- A-Ketoglutaric acid + NH ₄+ NADPH ₂ Glutamic acid + H ₂ O + NADP
- BGlutamic acid + oxaloacetic acid -Ketoglutaric acid + Aspartic acid
- CGlutamic acid + NH ₄+ ATP -glutamine + ADP
- D2 NH ₃+3 O ₂ 2 HNO ₂+2 H ₂ O
Correct answer
C. Glutamic acid + NH ₄+ ATP -glutamine + ADP
Step-by-step solution
Amidation is the process in which an amino acid reacts with an ammonium ion to form an amide. This process requires energy in the form of ATP. In plants, the hydroxyl part of the acid group of an amino acid is replaced by another amino radical ( ext NH ₂^- ). For example, glutamic acid reacts with ext NH ₄^+ in the presence of ATP to form glutamine. The reaction is: Glutamic acid + ext NH ₄^++ ATP Glutamine + ADP + Pi The first option represents reductive amination. The second option represents transamination. The