Oxidative phosphorylation ( electron transport chain )

Question 1

state 2 electron carriers that will carry the electrons

Answer 1

NAD+, FAD

Question 2

how many electrons will be carried by an electron carrier?

Answer 2

a pair of electrons

Question 3

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

Answer 3

NADH and FADH2

Question 4

complex I will accept electrons from ____

NADH

Answer 4

NADH

Question 5

complex I will undergo ____ process

NADH

Answer 5

reduction

Question 6

why does complex I go through reduction

NADH

Answer 6

because it accepts electrons from NADH

Question 7

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

(NADH)

Answer 7

it will be oxidized into NAD+

Question 8

complex I will pass the electrons to ______

NADH

Answer 8

coenzyme Q

Question 9

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

(NADH)

Answer 9

it will be deoxidized

Question 10

oxidation of complex I will _____ energy

NADH

Answer 10

release

Question 11

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

(NADH)

Answer 11

intermembrane space

Question 12

mobile carrier coenzyme Q will _____ the electron from complex I

(NADH)

Answer 12

accept

Question 13

coenzyme Q will undergo ____ process

NADH

Answer 13

reduction

Question 14

coenzyme Q will carry the electrons to _____

NADH

Answer 14

complex III

Question 15

complex III will transfer the electrons to _____

NADH

Answer 15

cytochrome C

Question 16

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

(NADH)

Answer 16

it will be oxidized

Question 17

oxidation of complex III will ____ energy

NADH

Answer 17

release

Question 18

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

(NADH)

Answer 18

intermembrane space

Question 19

cytochrome C will then carry the electrons to _____

NADH

Answer 19

complex IV

Question 20

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

(NADH)

Answer 20

oxygen

Question 21

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

(NADH)

Answer 21

it will be oxidized

Question 22

oxidation of complex IV will _____ energy

NADH

Answer 22

release

Question 23

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

(NADH)

Answer 23

mitochondrial matrix, intermembrane space

Question 24

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

NADH

Answer 24

H2O

Question 25

FADH will ____ electrons to complex II | FADH2

Answer 25

donate

Question 26

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

Answer 26

it will be oxidised to FAD+

Question 27

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

Answer 27

reduction

Question 28

complex II will pass the electrons to coenzyme Q and undergo _____ (FADH2)

Answer 28

oxidation

Question 29

coenzyme Q will receive the electrons and undergo ____ | FADH2

Answer 29

reduction

Question 30

does the oxidation of complex II will result to the pumping of H+ from the mitochondrial matrix to intermembrane space? (FADH2)

Answer 30

it will not pump the H+ to intermembrane space

Question 31

why does the oxidation of complex II do not pump H+ to the intermembrane space? (FADH2)

Answer 31

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

Question 32

coenzyme Q will then carry the electrons to complex III and causes complex III to be _____ (FADH2)

Answer 32

reduced

Question 33

the oxidation of complex III will ____ energy to pump H+ from matrix to intermembrane space (FADH2)

Answer 33

release

Question 34

complex III will then transfer the electrons to _____ | FADH2

Answer 34

cytochrome C

Question 35

cytochrome C will donate the electrons to ______ | FADH2

Answer 35

complex IV

Question 36

the electrons from complex IV will unite with H+ and ___ to produce ____ (FADH2)

Answer 36

O2, H2O

Question 37

complex IV will then be ______ | FADH2

Answer 37

oxidized

Question 38

the oxidation of complex IV is coupled with pumping of the H+ from _______ to ______ (FADH2)

Answer 38

mitochondrial matrix, intermembrane space

Question 39

why does the electrons move along the series of carriers?

Answer 39

because each carrier has a higher electronegativity than the carrier before

Question 40

what is meant by electronegativity?

Answer 40

the tendency of a substance to accept electrons

Question 41

what is the final acceptor of the electron?

Answer 41

oxygen

Question 42

why is oxygen the final acceptor of the electrons?

Answer 42

because it has the highest electronegativity