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Cellular Respiration 1

Total questions: 28

Worksheet time: 16mins

Name
Class
Date
1.

In the presence of oxygen, pyruvate will enter

a)

fermentation

b)

link reaction

c)

oxidative phosphorylation

d)

Krebs cycle

2.

the purpose of cellular respiration is to generate

a)

water

b)

NADH

c)

glucose

d)

ATP

3.
In which way are photosynthesis and cellular respiration different?
a)
Cellular respiration stores ATP, while photosynthesis releases ATP.
b)
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
c)
Photosynthesis releases energy, while cellular respiration stores energy.
d)
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
4.
After intense activity, your muscles feel sore because of 
a)
the accumulation of NAD+
b)
the accumulation of lactic acid 
c)
the accumulation of ATP
d)
the accumulation of carbon dioxide
5.

Cellular Respiration occurs in what cell organelle?

a)

chloroplast

b)

cytoplasm

c)

mitochondria

d)

animal

6.

Which molecule is the reactant of Glycolysis?

a)

water

b)

glucose

c)

carbon dioxide

d)

ATP

7.

What type of respiration requires oxygen?

a)

Aerobic

b)

Anaerobic

8.

True or False: Only animals can undergo Cellular Respiration.

a)

True

b)

False

9.
When glycolysis occurs,
a)
a molecule of glucose is split
b)
two pyruvate are made
c)
some ATP is produced
d)
all of these
10.
Glycolysis results in the net gain of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
11.
Where does glycolysis take place in cells?
a)
Cytoplasm
b)
Mitochondrion
c)
Endoplasmic Reticulum
d)
Ribosomes
12.
Glycolysis results in the total production of:
a)
2 ATP
b)
4 ATP
c)
4 NADH
d)
2 Acetyl CoA
13.
Which is not part of the net products of Glycolysis?
a)
2 ATP
b)
2 NADH
c)
2 Pyruvate
d)
2 CO2
14.
Which of the following is not a requirement for glycolysis?
a)
Oxygen
b)
ATP
c)
NAD+
d)
Glucose
15.
Which of the following is not a product of glycolysis?
a)
FADH2
b)
NADH
c)
ATP
d)
Pyruvate
16.
Glycolysis requires
a)
ATP
b)
Oxygen
c)
sunlight
d)
NADP+
17.

Where does the link reaction take place

a)

inner mitochondrial membrane

b)

cytoplasm

c)

mitochondrial matrix

d)

ribosome

18.

How many C atoms does acetyl CoA contain?

a)

1

b)

2

c)

3

d)

4

19.

The products of the link reaction are

a)

pyruvate and carbon dioxide

b)

carbon dioxide and co-enzyme A

c)

carbon dioxide, acetyl coA and NADH

d)

NADH and carbon dioxide

20.

The removal of carbon from a molecule in the form of carbon dioxide is known as

a)

decarboxylation

b)

dehydrogenation

c)

phosphorylation

d)

oxidation

21.

Which 2 terms relate to the removal of hydrogen from a molecule

a)

reduction

b)

redox

c)

oxidation

d)

dehydrogenation

22.
Prior to entering the Krebs Cycle, each pyruvate molecule loses electrons, hydrogen ions, and a carbon, forming an energy-rich molecule of
a)
Acetyl-CoA
b)
Citrate
c)
Oxaloacetate
d)
Malate
23.
How many FADH2 molecules are produced by 1 turn of the Krebs Cycle?
a)
1
b)
2
c)
3
d)
4
24.
How many CO2 molecules are produced by the Krebs Cycle for a molecule of glucose?
a)
2
b)
4
c)
6
d)
3
25.

in Krebs cycle, acetyl CoA will bind with oxaloacetate forming..

a)

succinate

b)

malate

c)

citrate

d)

succinyl CoA

26.
The "regenerator" of the Krebs Cycle is:
a)
Oxaloacetate
b)
Acetyl-CoA
c)
Citrate
d)
α-Ketoglutarate
27.
How many FADH2 molecules are produced by 1 molecule of glucose?
a)
1
b)
2
c)
3
d)
4
28.
Which of the following is not a requirement for the Krebs Cycle?
a)
NAD+
b)
FAD+
c)
Water
d)
Pyruvate

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