Oxidative phosphorylation ( electron transport chain ) Flashcards
state 2 electron carriers that will carry the electrons
NAD+, FAD
how many electrons will be carried by an electron carrier?
a pair of electrons
the electron carrier will enter the oxidative phosphorylation in the form of ____ & _____
NADH and FADH2
complex I will accept electrons from ____
NADH
NADH
complex I will undergo ____ process
NADH
reduction
why does complex I go through reduction
NADH
because it accepts electrons from NADH
what will happen to the NADH after it passes the electrons to complex I
(NADH)
it will be oxidized into NAD+
complex I will pass the electrons to ______
NADH
coenzyme Q
what will happen to complex I when it passes the electrons to coenzyme Q
(NADH)
it will be deoxidized
oxidation of complex I will _____ energy
NADH
release
the energy released is then used to pump H+ from the mitochondria matrix to ______
(NADH)
intermembrane space
mobile carrier coenzyme Q will _____ the electron from complex I
(NADH)
accept
coenzyme Q will undergo ____ process
NADH
reduction
coenzyme Q will carry the electrons to _____
NADH
complex III
complex III will transfer the electrons to _____
NADH
cytochrome C
what will happen to complex III when it passes the electrons to cytochrome C
(NADH)
it will be oxidized
oxidation of complex III will ____ energy
NADH
release
the energy released is then used to pump H+ from the mitochondria matrix to ______
(NADH)
intermembrane space
cytochrome C will then carry the electrons to _____
NADH
complex IV
electrons that was transferred to complex IV will unite with 2 molecules of _____
(NADH)
oxygen
what will happen to complex IV when passes the electrons to oxygen
(NADH)
it will be oxidized
oxidation of complex IV will _____ energy
NADH
release
oxidation of complex IV is coupled with the pumping of H+ from _______ to ________
(NADH)
mitochondrial matrix, intermembrane space
H+ will unite with oxygen and produces 2 molecules of ____
NADH
H2O
FADH will ____ electrons to complex II
FADH2
donate
what will happen to FADH2 when it passes the electrons to complex II
(FADH2)
it will be oxidised to FAD+
complex II will undergo ____ when it receives the electrons from FADH2
(FADH2)
reduction
complex II will pass the electrons to coenzyme Q and undergo _____
(FADH2)
oxidation
coenzyme Q will receive the electrons and undergo ____
FADH2
reduction
does the oxidation of complex II will result to the pumping of H+ from the mitochondrial matrix to intermembrane space?
(FADH2)
it will not pump the H+ to intermembrane space
why does the oxidation of complex II do not pump H+ to the intermembrane space?
(FADH2)
because it contains less energy for pump H+ from matrix to intermembrane space
coenzyme Q will then carry the electrons to complex III and causes complex III to be _____
(FADH2)
reduced
the oxidation of complex III will ____ energy to pump H+ from matrix to intermembrane space
(FADH2)
release
complex III will then transfer the electrons to _____
FADH2
cytochrome C
cytochrome C will donate the electrons to ______
FADH2
complex IV
the electrons from complex IV will unite with H+ and ___ to produce ____
(FADH2)
O2, H2O
complex IV will then be ______
FADH2
oxidized
the oxidation of complex IV is coupled with pumping of the H+ from _______ to ______
(FADH2)
mitochondrial matrix, intermembrane space
why does the electrons move along the series of carriers?
because each carrier has a higher electronegativity than the carrier before
what is meant by electronegativity?
the tendency of a substance to accept electrons
what is the final acceptor of the electron?
oxygen
why is oxygen the final acceptor of the electrons?
because it has the highest electronegativity
