Bioenergy Flashcards

1
Q

Which of the following is the correct sequence of electron acceptors in ETS for production of ATP?

(a) Cyt b, c, a, a3

(b) Cyt a, a, b, c

(c) Cyt c, b, a, a3

(d) Cyt b, c, a3, a

A

a

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2
Q

Which of the following terminal cytochromes is responsible for donating electrons to oxygen?

(a) Cyt a3

(b) Cyt b

(c) Cyt c

(d) Cyt a1

A

a

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3
Q
A
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4
Q

Electron transport system (ETS) is present in which of the following parts of mitochondria?

(a) Inner membrane

(b) Outer membrane

(c) Matrix

(d) Stroma

A

a

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5
Q

Which of the following is the first complex (Complex I) of ETS?

(a) NADH dehydrogenase

(b) Cytochrome aa3

(c) Cytochrome bc1

(d) ATP synthase

A

c

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6
Q

Ubiquinone transfers its electrons to

(a) Complex I

(b) Complex II

(c) matrix

(d) Cyt c

A

d

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7
Q

In which part of the cell, oxidative phosphorylation takes place?

(a) Inner mitochondrial membrane

(b) Outer mitochondrial membrane

(c) Grana of chloroplast

(d) Stroma of chloroplast

A

a

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8
Q

Cytochromes are present in

(a) lysosomes

(b) mitochondrial matrix

(c) cristae of mitochondria

(d) outer membrane of mitochondria

A

c
nếp gấp của màng trong ty thể

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9
Q

ATP synthesis by ATP synthase is driven by the movement of

(a) protons

(b) NADH

(c) electrons

(d) All of the above

A

a
protons H+

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10
Q

Oxidative phosphorylation results in the formation of

(a) Oxygen

(b) ADP

(c) ATP + H2O

(d) NADH

A

c

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11
Q

Which of the following complexes of ETS does not account for the pumping out of protons from the mitochondrial matrix?

(a) Complex I

(b) Complex III

(c) Complex II

(d) Complex IV

A

c
succinate-coQ reductase

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12
Q

Which of the following is the Complex IV of ETS?

(a) NADH dehydrogenase

(b) Cytochrome c oxidase

(c) Cytochrome bc1

(d) Succinate dehydrogenase

A

b
cytc aa3

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13
Q

Which of the following is the Complex II of ETS?

(a) NADH dehydrogenase

(b) Succinate dehydrogenase

(c) Cytochrome bc1

(d) ATP synthase

A

b
Succinate dehydrogenase (SDH) or succinate-coenzyme Q reductase (SQR) or respiratory complex II

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14
Q

Which of the following products of glucose oxidation are necessary for oxidative phosphorylation?

(a) Pyruvate

(b) NADH and FADH2

(c) Acetyl CoA

(d) NADPH and ATP

A

b

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15
Q

Which of the following is true for cytochrome c oxidase complex?

(a) It donates electrons to O2

(b) It accepts electrons from Cyt c

(c) It pumps two protons out of the mitochondrial matrix

(d) All of the above

A

d

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16
Q
A