Download Cell Respiration Practice Questions

Cell Respiration Practice Questions
1.
2.
3.
4.
5.
Of the following products, which is produced by both anaerobic respiration and aerobic
respiration in humans?
I.
Pyruvate
II.
ATP
III.
Lactate
A.
I only
B.
I and II only
C.
I, II and III
D.
II and III only
Which is not a product of the Krebs cycle?
A.
CO2
B.
NADH + H+
C.
Pyruvate
D.
ATP
How many ATP molecules (net yield) are produced per molecule of glucose as a direct result of
glycolysis?
A.
2
C.
10
B.
4
D.
38
What happens during muscle contraction?
A.
Both actin and myosin filaments shorten.
B.
Na+ ions are taken up by the sarcoplasmic reticulum.
C.
The actin and myosin filaments slide over each other.
D.
Cross bridges remain attached to the filaments.
Which way do the protons flow when ATP is synthesized in mitochondria?
A.
From the inner matrix to the intermembrane space
B.
From the intermembrane space to the inner matrix
C.
From the intermembrane space to the cytoplasm
D.
From the cytoplasm to the intermembrane space
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6.
7.
8.
What accumulates in the inter-membrane space of the mitochondrion during electron transport?
A.
ATP
B.
Electrons
C.
Protons (hydrogen ions)
D.
Oxygen
What is the sequence of stages during the conversion of glucose into pyruvate in glycolysis?
A.
Lysis
phosphorylation of sugar
oxidation
B.
Lysis
oxidation
C.
Phosphorylation of sugar
lysis
D.
Phosphorylation of sugar
oxidation
phosphorylation of sugar
oxidation
lysis
How many molecules of acetyl CoA (ethanoyl CoA) does the oxidation of the fatty acid stearic
acid produce?
CH 3
CH 2
CH 2
CH 2
CH 2
CH 2
CH 2
CH 2
CH 2
CH 2
Stearic acid
CH 2
CH 2
CH 2
CH 2
CH 2
CH 2
CH 2
COOH
A.
2
C.
9
B.
6
D.
18
2
9.
10.
11.
Which of the following produce ATP in mitochondria?
A.
The movement of protons from the matrix to the intermembrane space
B.
The movement of protons from the intermembrane space to the cytoplasm
C.
The splitting of water molecules and the movement of electrons to oxygen
D.
The movement of protons from the intermembrane space to the matrix
Aerobic respiration involves conversion of glucose into pyruvate and conversion of pyruvate
into carbon dioxide and water. Where do these processes occur in a eukaryotic cell?
Where glucose is broken down
into pyruvate
Where pyruvate is broken down
into carbon dioxide and water
A.
Cytoplasm
Cytoplasm
B.
Cytoplasm
Mitochondrion
C.
Mitochondrion
Cytoplasm
D.
Mitochondrion
Mitochondrion
The average surface area for the inner membranes of mitochondria in a epithelial cell is 40 m2
g–1. The surface area of the inner membrane of mitochondria from heart muscle cells is over 200
m2 g–1.
What is the reason for the large surface area of the inner membranes of the mitochondria in the
heart muscle cells?
12.
13.
A.
They contain enzymes to hydrolyse ADP and inorganic phosphate to ATP.
B.
They contain enzymes to oxidize ADP and inorganic phosphate to ATP.
C.
They contain enzymes to reduce ADP and inorganic phosphate to ATP.
D.
They contain enzymes to condense ADP and inorganic phosphate to ATP.
During which process are oxygen molecules directly involved during cellular respiration?
A.
Glycolysis
B.
Krebs cycle
C.
Oxidation of pyruvate to acetyl CoA
D.
Accepting electrons at the end of the electron transport chain
What is the “link reaction” in eukaryotic respiration?
A.
Pyruvate joining with coenzyme A to produce CO2 and NADH + H+
B.
Oxidation of NADH to yield electrons and protons
C.
Acetyl coenzyme A combining or joining with a C4 compound to give C6 + coenzyme A
D.
Passage of acetyl coenzyme A through the mitochondrial membrane
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14.
How are photosynthesis and aerobic respiration similar?
ATP synthetase enzyme
Electron transport chain
NADH + H+
A.
B.
C.
D.
Key:
15.
= both have or use this
Which row in the table describes the first stage of cellular respiration?
Substrate
16.
17.
18.
= both do not have or use this
Location
Product
Product
A.
pyruvate
mitochondria
oxygen
water
B.
pyruvate
cytoplasm
carbon dioxide
ATP
C.
glucose
mitochondria
pyruvate
water
D.
glucose
cytoplasm
pyruvate
ATP
Which combination of changes describes biological oxidation?
Electrons
Oxygen
Hydrogen
A.
loss
gain
loss
B.
loss
loss
gain
C.
gain
loss
gain
D.
gain
gain
loss
Within the mitochondria, what compound is produced through oxidation of fatty acids?
A.
Acetyl-CoA
B.
Acetylcholine
C.
Oxaloacetate
D.
Pyruvate
Which of the following features is/are present in mitochondria but not in chloroplasts?
I.
DNA and ribosomes
II.
Outer and inner membranes
III.
Cristae
A.
I only
C.
III only
B.
II only
D.
I and III only
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19.
20.
21.
22.
What are the end products of aerobic cell respiration?
A.
Carbon dioxide and ethanol
B.
Lactate and ATP
C.
Water, ATP and oxygen
D.
Water, carbon dioxide and ATP
What is the key function of acetyl CoA in cellular respiration?
A.
Involved in carbohydrate and fatty acid metabolism
B.
Used in anaerobic respiration to oxidize pyruvate
C.
Introduces amino acids into the Krebs cycle
D.
Used as a hydrogen carrier in the link reaction
What is the correct sequence of chemicals produced in the anaerobic respiration pathway?
A.
Lactate → pyruvate → ethanol
B.
Ethanol → pyruvate → glucose
C.
Glucose → lactate → pyruvate
D.
Glucose → pyruvate → lactate
Where in eukaryotic cells is glucose broken into pyruvate, to release energy for use in the cell?
A.
Chloroplast
B.
Cytoplasm
C.
Mitochondrion
D.
Nucleus
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23.
The diagram below shows the three stages of glycolysis. Which processes are indicated by I, II
and III?
6-carbon glucose
I
6-carbon glucose phosphate
II
3-carbon
sugar phosphate
3-carbon
sugar phosphate
III
3-carbon
pyruvate
3-carbon
pyruvate
I
II
III
A.
Lysis
Phosphorylation
Oxidation and ATP
formation
B.
Oxidation and ATP
formation
Phosphorylation
Lysis
C.
Phosphorylation
Lysis
Oxidation and ATP
formation
D.
Phosphorylation
Oxidation and ATP
formation
Lysis
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24.
25.
26.
Humans can respire aerobically and anaerobically. Which are products of both aerobic cell
respiration and anaerobic cell respiration in humans?
A.
Pyruvate and ATP
B.
Pyruvate and lactate
C.
ATP and carbon dioxide
D.
Lactate and carbon dioxide
What is the net production of ATP, per molecule of glucose during the fermentation of glucose
to lactate?
A.
36 molecules
B.
4 molecules
C.
2 molecules
D.
None
Anaerobic respiration occurs in the absence of oxygen while aerobic respiration requires
oxygen.
(a)
State one final product of anaerobic respiration.
.....................................................................................................................................
(1)
(b)
Complete the table showing the differences between oxidation and reduction.
Oxidation
Reduction
Electrons gained or
lost
Oxygen or hydrogen
gained or lost
(2)
(c)
The structure of a mitochondrion is shown in the electron micrograph below.
7
Name the parts labelled A, B and C and state the function of each.
Part A:
Name: ..........................................................................................................
Function: ......................................................................................................
Part B:
Name: ...........................................................................................................
Function: ......................................................................................................
Part C:
Name: ...........................................................................................................
Function: ......................................................................................................
(3)
27.
(a)
State two functions of proteins with a named example of each.
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
(2)
(b)
Explain chemiosmosis as it occurs during cell respiration.
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
(2)
28.
Explain the similarities and differences in anaerobic and aerobic cellular respiration.
(Total 8 marks)
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