Question

Where is ferredoxin-${\mathrm{NADP}}^{+}$-reductase (FNR) found in the leaf?

• A. Lumen of thylakoid
• B. Membrane of thylakoid
• C. Stroma of thylakoid
• D. Within the photosystem

Answer 1

The correct option is C Stroma of thylakoid

Ferredoxin-${\mathrm{NADP}}^{+}$-reductase (FNR) is an enzyme complex which catalyses the reaction of reduction of NADP+. It is found in the stroma of the thylakoid. The reaction catalysed is as follows
${\mathrm{NADP}}^{+}+2H^{+}+2e^{-}\stackrel{\mathrm{FNR}}{\to }$$\mathrm{NADPH}+H^{+}$