PrepBharat

1. The reaction of Kreb’s cycle take place
a) In cytoplasm
b) In endoplasmic reticulum
c) In matrix of mitochondria
d) On the surface of mitochondrion

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2. Oxidative phosphorylation occurs in the
a)Outer membrane of mitochondria
b) Inner membrane of mitochondria
c) Stroma of chloroplast
d) Grana of chloroplast

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3. Which of the following is the correct sequence in Kreb’s cycle?
a) Isocitric acid → Oxalosuccinic acid → α–ketoglutaric acid
b) Oxalosuccinic acid → Isocitric acid → α–ketoglutaric acid
c) α–ketoglutaric acid → Isocitric acid → Oxalosuccinic acid
d) Isocitric acid → α–ketoglutaric acid → Oxalosuccinic acid

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4.In how many steps, \[CO_{2}\] is released in aerobic respiration of pyruvic acid?
a) One
b) Six
c) Three
d) Twelve

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5. The formation of acetyl coenzyme–A from pyruvic acid is the result of its
a) Reduction
b) Dehydration
c) Dephosphorylation
d) Oxidative decarboxylation

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6. Oxidative phosphorylation and photophosphorylation both require the electron carrier
a) Cytochrome
b) Oxygen
c) Carbon dioxide
d) Water

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7. In an electron transport chain, in terminal oxidation, the cytochrome which donates electrons to \[O_{2}\] is
a) Cytochrome b
b) Cytochrome c
c) Cytochrome \[a_{3}\]
d) Cytochrome a

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8.The last or terminal cytochrome in respiratory chain is
a) Cyt b
b) Cyt \[a_{3}\]
c) Cyt a
d) Cyt c

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9.The correct sequence of electron acceptor in ATP synthesis is
a) Cyt a \[a_{3}\] b c
b) Cyt b c a \[a_{3}\]
c) Cyt b c \[a_{3}\] a
d) Cyt c b a \[a_{3}\]

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10. In Kreb’s cycle, the FAD precipitates as electron acceptor during the conversion of
a) Succinyl CoA to succinic acid
b) α-ketoglutarate to succinyl CoA
c) Fumaric acid to maleic acid
d) Succinic acid to fumaric acid

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