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BIO150 > Oxidative phosphorylation ( electron transport chain ) > Flashcards

Oxidative phosphorylation ( electron transport chain ) Flashcards

1
Q

state 2 electron carriers that will carry the electrons

A

NAD+, FAD

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2
Q

how many electrons will be carried by an electron carrier?

A

a pair of electrons

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3
Q

the electron carrier will enter the oxidative phosphorylation in the form of ____ & _____

A

NADH and FADH2

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4
Q

complex I will accept electrons from ____

NADH

A

NADH

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5
Q

complex I will undergo ____ process

NADH

A

reduction

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6
Q

why does complex I go through reduction

NADH

A

because it accepts electrons from NADH

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7
Q

what will happen to the NADH after it passes the electrons to complex I

(NADH)

A

it will be oxidized into NAD+

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8
Q

complex I will pass the electrons to ______

NADH

A

coenzyme Q

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9
Q

what will happen to complex I when it passes the electrons to coenzyme Q

(NADH)

A

it will be deoxidized

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10
Q

oxidation of complex I will _____ energy

NADH

A

release

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11
Q

the energy released is then used to pump H+ from the mitochondria matrix to ______

(NADH)

A

intermembrane space

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12
Q

mobile carrier coenzyme Q will _____ the electron from complex I

(NADH)

A

accept

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13
Q

coenzyme Q will undergo ____ process

NADH

A

reduction

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14
Q

coenzyme Q will carry the electrons to _____

NADH

A

complex III

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15
Q

complex III will transfer the electrons to _____

NADH

A

cytochrome C

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16
Q

what will happen to complex III when it passes the electrons to cytochrome C

(NADH)

A

it will be oxidized

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17
Q

oxidation of complex III will ____ energy

NADH

A

release

18
Q

the energy released is then used to pump H+ from the mitochondria matrix to ______

(NADH)

A

intermembrane space

19
Q

cytochrome C will then carry the electrons to _____

NADH

A

complex IV

20
Q

electrons that was transferred to complex IV will unite with 2 molecules of _____

(NADH)

A

oxygen

21
Q

what will happen to complex IV when passes the electrons to oxygen

(NADH)

A

it will be oxidized

22
Q

oxidation of complex IV will _____ energy

NADH

A

release

23
Q

oxidation of complex IV is coupled with the pumping of H+ from _______ to ________

(NADH)

A

mitochondrial matrix, intermembrane space

24
Q

H+ will unite with oxygen and produces 2 molecules of ____

NADH

A

H2O

25
Q

FADH will ____ electrons to complex II

FADH2

A

donate

26
Q

what will happen to FADH2 when it passes the electrons to complex II

(FADH2)

A

it will be oxidised to FAD+

27
Q

complex II will undergo ____ when it receives the electrons from FADH2

(FADH2)

A

reduction

28
Q

complex II will pass the electrons to coenzyme Q and undergo _____

(FADH2)

A

oxidation

29
Q

coenzyme Q will receive the electrons and undergo ____

FADH2

A

reduction

30
Q

does the oxidation of complex II will result to the pumping of H+ from the mitochondrial matrix to intermembrane space?

(FADH2)

A

it will not pump the H+ to intermembrane space

31
Q

why does the oxidation of complex II do not pump H+ to the intermembrane space?

(FADH2)

A

because it contains less energy for pump H+ from matrix to intermembrane space

32
Q

coenzyme Q will then carry the electrons to complex III and causes complex III to be _____

(FADH2)

A

reduced

33
Q

the oxidation of complex III will ____ energy to pump H+ from matrix to intermembrane space

(FADH2)

A

release

34
Q

complex III will then transfer the electrons to _____

FADH2

A

cytochrome C

35
Q

cytochrome C will donate the electrons to ______

FADH2

A

complex IV

36
Q

the electrons from complex IV will unite with H+ and ___ to produce ____

(FADH2)

A

O2, H2O

37
Q

complex IV will then be ______

FADH2

A

oxidized

38
Q

the oxidation of complex IV is coupled with pumping of the H+ from _______ to ______

(FADH2)

A

mitochondrial matrix, intermembrane space

39
Q

why does the electrons move along the series of carriers?

A

because each carrier has a higher electronegativity than the carrier before

40
Q

what is meant by electronegativity?

A

the tendency of a substance to accept electrons

41
Q

what is the final acceptor of the electron?

A

oxygen

42
Q

why is oxygen the final acceptor of the electrons?

A

because it has the highest electronegativity

BIO150 (14 decks)

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