Chapter 5, Problem 7MCQ

Summary Introduction

Introduction:

Photorespiration is also referred as oxidative photosynthetic carbon cycle. It is a metabolic pathway, in which $\text{RuBisCo}$ (Ribulose-1,5-bisphosphate carboxylase) enzyme adds up ${\text{O}}_{\text{2}}$ instead of ${\text{CO}}_{\text{2}}$ to $\text{RuBP}$ (Ribulose 1,5-bisphosphate). The product of photorespiration does not enter ${\text{C}}_{\text{3}}$ pathway or Calvin cycle. The plant loses the already fixed ${\text{CO}}_{\text{2}}$. ATP (adenosine triphosphate) and NADPH (reduced nicotinamide adenine dinucleotide phosphate) are wasted due to this.