Biochemistry Questions and Answers – The Central Photochemical Event : Light-…

This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “The Central Photochemical Event: Light-Driven Electron Flow”.

1. A chlorophyll-like accessory pigment lacking Mg⁺² is ____________
a) Pheophytin
b) Cytochrome c
c) Plastocyanin
d) Ferredoxin
View Answer

2. A soluble Cu-containing electron transfer protein is ____________
a) Pheophytin
b) Cytochrome c
c) Plastocyanin
d) Ferredoxin
View Answer

3. Photosystem II is a ____________
a) Pheophytin-quinone type
b) Ferredoxin type
c) Plastocyanin type
d) Plastocyanin-ferredoxin type
View Answer

4. Which of the following describes the complete route by which electrons flow H₂O to NADP⁺?
a) Z scheme
b) A scheme
c) B scheme
d) X scheme
View Answer

5. Plastoquinol formed in PSII is oxidized by ____________
a) Cytochrome b₆f
b) Cytochrome c
c) Cytochrome f
d) Cytochrome h
View Answer

6. A mobile, lipid soluble carrier of two electrons present in chloroplasts is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
View Answer

7. A mobile, lipid soluble carrier of two electrons present in mitochondria is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
View Answer

8. A water-soluble protein that carries one electron present in mitochondria is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
View Answer

9. A water-soluble protein that carries one electron present in the chloroplast is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
View Answer

10. Cyanobacteria does not use which of the following for both oxidative and photophosphorylation?
a) Cytochrome c₆
b) Cytochrome b6f
c) Plastoquinone
d) Plastocyanin
View Answer

Sanfoundry Global Education & Learning Series – Biochemistry.

To practice all areas of Biochemistry, here is complete set of 1000+ Multiple Choice Questions and Answers.