Biochemistry Questions and Answers – The Central Photochemical Event : Light-Driven Electron Flow

This set of Biochemistry Questions and Answers for Entrance exams 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
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2. A soluble Cu-containing electron transfer protein is ____________
a) Pheophytin
b) Cytochrome c
c) Plastocyanin
d) Ferredoxin
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3. Photosystem II is a ____________
a) Pheophytin-quinone type
b) Ferredoxin type
c) Plastocyanin type
d) Plastocyanin-ferredoxin type
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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
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5. Plastoquinol formed in PSII is oxidized by ____________
a) Cytochrome b₆f
b) Cytochrome c
c) Cytochrome f
d) Cytochrome h
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6. A mobile, lipid soluble carrier of two electrons present in chloroplasts is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
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7. A mobile, lipid soluble carrier of two electrons present in mitochondria is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
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8. A water-soluble protein that carries one electron present in mitochondria is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
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9. A water-soluble protein that carries one electron present in the chloroplast is ____________
a) PQ_B
b) Q
c) Cytochrome c
d) Plastocyanin
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10. Cyanobacteria does not use which of the following for both oxidative and photophosphorylation?
a) Cytochrome c₆
b) Cytochrome b6f
c) Plastoquinone
d) Plastocyanin
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To practice all areas of Biochemistry for Entrance exams, here is complete set of 1000+ Multiple Choice Questions and Answers.