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Aerobic Respiration

Total questions: 25

Worksheet time: 12mins

Name
Class
Date
1.
How many carbon atoms does pyruvate have?
a)
2 atoms
b)
3 atoms
c)
6 atoms
d)
1 atom
e)
5 atoms
2.
When pyruvate is converted to acetyl CoA, what are the products of the reaction?
a)
Reduced NADH, CO2 and Acetyl CoA
b)
Oxidised NADH, CO2 and Acetyl CoA
c)
Reduced NADH, CO2 and Pyruvate
d)
Reduced NADPH, CO2 and Acetyl CoA
e)
Reduced NADH, O2 and Acetyl CoA
3.

How many carbon atoms does acetyl have?

a)

2 atoms

b)

3 atoms

c)

6 atoms

d)

1 atom

4.
For each molecule of glucose that enters glycolysis how many molecules of acetyl CoA will be produced?
a)
2 because 2 pyruvates are produced for every 1 glucose molecule in glycolysis
b)
3 because 6 carbons divided by 2 goes 3 times
c)
once only
5.
How many pyruvate molecules does glycolysis produce?
a)
5 molecules
b)
6 molecules
c)
2.5 molecules
d)
3 molecules
e)
2 molecules
6.

What happens in oxidative decarboxylation?

a)

CO2 and hydrogen ARE removed in the link reaction

b)

CO2 and hydrogen ARE NOT removed in the link reaction

7.

Where does oxidative decarboxylation occur (link reaction)?

a)

Cytoplasm

b)

mitochondria

c)

mitochondrial matrix

d)

stroma

e)

thylakoid membrane<br />

8.
What is the acceptor for the 2C acetyl group that is produced in oxidative decarboxylation?
a)
NADPH
b)
Coenzyme A
c)
NADH
d)
FADH2
9.
Why is the link reaction called the link reaction?
4 lines
10.
For each molecule of acetyl that enters the Krebs cycle how many CO2 molecules are produced?
a)
3 carbon dioxides
b)
4 carbon dioxides
c)
6 carbon dioxides
d)
2 carbon dioxides
11.
For each molecule of acetyl that enters the Krebs cycle how many reduced NAD is produced?
a)
2 reduced NAD
b)
3 reduced NAD
c)
4 reduced NAD
d)
5 reduced NAD
12.

For each molecule of acetyl that enters the Krebs cycle how many reduced FAD is produced?

a)

2 reduced FAD

b)

3 reduced FAD

c)

1 FADH2

d)

4 FADH2

13.
For each molecule of acetyl that enters the Krebs cycle how many ATP molecules are produced?
a)
1 Adenosine triphosphate
b)
1ADP
c)
4 Adenosine triphosphate
d)
2 Adenosine triphosphate
14.
How many ATP molecules are produced in Glycolysis?
a)
4 net
b)
2 net
c)
2 total
d)
3 net
15.

Which of these is your favourite?

a)

DNA replication

b)

Respiration

c)

Photosynthesis

16.
How many ATP molecules are produced in the link reaction?
a)
1
b)
2
c)
3
d)
4
e)
0
17.
How many reduced NAD are produced in glycolysis?
a)
1
b)
2
c)
3
d)
4
18.

How many reduced NAD are produced in the link reaction per glucose?

a)

0

b)

1

c)

2

d)

3

e)

4

19.

How many reduced NAD are produced in the link reaction per acetyl group?

a)

4

b)

3

c)

2

d)

1

e)

0

20.
How many reduced FAD molecules are produced in the link reaction?
a)
3
b)
2
c)
1
d)
0
21.

Which mitochondrion membrane is permeable to H+ ions

a)

Inner membrane

b)

outer membrane

22.
What role do NAD and FAD play in REDOX reactions?
a)
They're oxidised to go under oxidative reactions for phosphorylation reactions
b)
They're reduced to go under oxidative reactions for phosphorylation reactions
c)
They're phosphorylated<br />
d)
What's a REDOX reaction?!
23.
What is chemiosmosis?
a)
Using a proton gradient to synthesis ATP, using the energy released from the protein gradient.
b)
Using ATP to move protons across the inner membrane
c)
Using a proton gradient to reduce ETC proteins
d)
It occurs in chloroplasts only
e)
Uses proton flow into the inner membrane space to make ATP
24.
What is the electron transport chain?
a)
Carrier proteins with haem prosthetic groups where the iron atom can gain more ions as it accepts and donates protons. It occurs in the mitochondrial membrane.
b)
The ETC is the last stage of respiration where ATPase makes ATP
c)
Carrier proteins with haem prosthetic groups where the iron atom can gain more ions as it accepts and donates electrons. It occurs in the mitochondrial membrane.
d)
When oxygen accepts Protons in the last step of aerobic respiration.
25.
Where does the Kreb's cycle occur?
a)
cytoplasm
b)
matrix
c)
intermembrane space
d)
inner mitochondrial membrane

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