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WorksheetsCellular Respiration
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
The 1st Law of Thermodynamics involves
a)
energy conservation
b)
entropy (disorder)
c)
conservation of mass
d)
molecular motion
2.
The energy stored in the H+ gradient of the mitochondrion is considered
a)
kinetic energy
b)
electrochemical potential energy
c)
chemical potential energy
d)
mechanical energy
3.
The combination of adenine and ribose is called
a)
adenine dinucleotide
b)
adenosine
c)
adenosine ribonucleotide
d)
adenine diphosphate
4.
The synthesis of ATP is considered an
a)
endergonic reaction
b)
exergonic reaction
c)
endothermic reaction
d)
exothermic reaction
5.
The coupling of ATP synthesis with a highly exergonic reaction is referred to as
a)
the chemiosmotic generation of ATP
b)
substrate-level phosphorylation
c)
oxidative phosphorylation
d)
aerobic respiration
6.
The pumping of protons across the inner membrane by proton pumps in the ETC is an example of
a)
active transport
b)
facilitated diffusion
c)
osmosis
d)
simple diffusion
7.
Protons return to the mitochondrial matrix via ATP synthase - this is an example of
a)
active transport
b)
facilitated diffusion
c)
osmosis
d)
oxidative respiration
8.
The ultimate electron acceptor during oxidative phosphorylation is
a)
water
b)
cytochrome oxidase
c)
ATP synthase
d)
oxygen
9.
The mitochondrial double membrane is crucial for
a)
the diffusion of oxygen inwards and carbon dioxide outwards
b)
establishing the proton gradient
c)
lactic acid fermentation
d)
substrate-level phosphorylation
10.
The components of the electron transport chain are arranged in order of
a)
increasing electronegativity
b)
decreasing electronegativity
c)
increasing molecular mass
d)
decreasing chemical importance
11.
The components of the electron transport chain are arranged in order of
a)
increasing electronegativity
b)
decreasing electronegativity
c)
increasing molecular mass
d)
decreasing chemical importance
12.
Which of the following is false? The coenzymes NADH and FADH2 are
a)
mobile energy carriers
b)
able to carry a pair of electrons
c)
are easily oxidized and reduced
d)
small polypeptides
13.
Each NADH within the mitochondrial matrix can donate its electrons to the ETC which leads to the synthesis of
a)
1 ATP
b)
2 ATP
c)
3 ATP
d)
1 oxygen molecule
14.
The net ATP production in glycolysis itself from one molecule of glucose is
a)
4 ATP
b)
2 ATP
c)
6 ATP
d)
1 ATP
15.
The reduction of oxygen during oxidative phosphorylation leads to the synthesis of
a)
water
b)
carbon dioxide
c)
a proton gradient
d)
ATP
16.
Which of the following is NOT one of the stages of aerobic respiration?
a)
glycolysis
b)
decarboxylation
c)
Krebs cycle
d)
electron transport and chemiosmosis
17.
Glycolysis occurs
a)
in the matrix
b)
only in the presence of oxygen
c)
in the cytoplasm
d)
only in the absence of oxygen
18.
The complete oxidation of one molecule of glucose results in the making of
a)
36 ATP
b)
2 pyruvate
c)
2 acetyl CoA
d)
36 water molecules
19.
What molecule (other than glucose) is needed to keep glycolysis going?
a)
FAD
b)
NAD+
c)
pyruvate
d)
oxaloacetate
20.
Any disruption to the mitochondrial inner membrane would have a detrimental effect on establishing the proton gradient.
a)
True
b)
False
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