The first reaction in photorespiration is

Carboxylation

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Decarboxylation

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Oxygenation

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Phosphorylation

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Oxygenation
The first reaction in photorespiration is oxygenation. In this step, RuBP is converted into one molecule of 3PGA and one molecule of 2PG. This reaction is catalyzed by enzyme RuBisCO. This reaction is affected by environmental factors such as temperature, carbon dioxide, water availability. The next step of photorespiration is processing of 2 phosphoglycolate.
Thus, the correct answer is option C.

Suggest Corrections