Question

Select the correct pathway for electron transport during photosynthesis.

• A. $CO _{2} \rightarrow RuBP \rightarrow$ Glucose - ATP
• B. $H _{2} O \rightarrow PS - I \rightarrow PS - II \rightarrow NADPH + H ^{+}$
• C. $H _{2} O \rightarrow PS - II \rightarrow PS - I \rightarrow NADPH + H ^{+}$
• D. $H _{2} O \rightarrow PS-II \rightarrow PS-I \rightarrow ATP$

Answer 1

Answer: (C)

Electrons during photosynthesis go from $H _{2} O$ to the PS-II. They reach to PS-I by various cytochrome carriers. They ultimately reach to the $NADP ^{+}$and reduce it in the presence of $H ^{+}$to $NADPH + H ^{+}$.