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WorksheetsVCE Biology U3 AoS 2 - Cellular Respiration
Total questions: 75
Worksheet time: 43mins
What is the general role of enzymes and coenzymes in photosynthesis and cellular respiration?
They inhibit steps in photosynthesis and cellular respiration.
They have no role in photosynthesis and cellular respiration.
They facilitate steps in photosynthesis and cellular respiration.
They only function in cellular respiration, not in photosynthesis.
Which processes are included when considering the main inputs, outputs, and locations of aerobic respiration?
Glycolysis, Krebs Cycle, and electron transport chain.
Photosynthesis, fermentation, and Krebs Cycle.
Electron transport chain, fermentation, and glycolysis.
Krebs Cycle, Calvin Cycle, and electron transport chain.
What distinguishes anaerobic fermentation in animals from that in plants/yeasts?
The location of fermentation.
The inputs of fermentation.
The difference in outputs.
The enzymes involved in fermentation.
What is the main purpose of Cellular Respiration?
To produce glucose and oxygen
To transfer the chemical energy of glucose into the energy of ATP
To consume ATP and convert it into glucose
To release oxygen into the atmosphere
What are the main products of Cellular Respiration?
Glucose and ATP
Oxygen and Carbon Dioxide
Carbon Dioxide and Water
ATP and Oxygen
During Cellular Respiration, energy is released from glucose by breaking what?
The bonds in ATP
The bonds in oxygen
The bonds in carbon dioxide
The bonds in glucose
What type of reactions are involved in cellular respiration?
Anabolic reactions
Catabolic reactions
Synthesis reactions
Decomposition reactions
Why is cellular respiration considered an exothermic process?
Because it absorbs heat energy
Because it requires light energy
Because it releases heat energy
Because it uses electrical energy
What role does oxygen play in cellular respiration?
It is a by-product
It is a reactant
It is a catalyst
It is an enzyme
How is the energy released during cellular respiration?
Quickly and in one large release
Slowly and through a series of smaller reactions
Instantaneously and completely
Not at all, it is stored
What occurs when oxygen is available for cellular respiration?
Anaerobic Respiration
Aerobic Respiration
Fermentation
Glycolysis
What process takes place when oxygen is not available for cellular respiration?
Krebs Cycle
Electron Transport Chain
Anaerobic Respiration
Glycolysis
Which of the following is a step in both aerobic and anaerobic respiration?
Krebs Cycle
Electron Transport Chain
Glycolysis
Fermentation
How many ATP molecules are typically produced in total by aerobic respiration?
2 ATP
30 or 32 ATP
~33 ATP
0 ATP
What is the final step in aerobic respiration that is not present in anaerobic respiration?
Glycolysis
Fermentation
Krebs Cycle
Electron Transport Chain
What is the main difference between aerobic and anaerobic respiration?
The amount of ATP produced
The presence of glucose
The presence of oxygen
The use of carbon dioxide
Where does the first part of both types of Cellular Respiration occur?
In the mitochondria
In the cytosol of the cell
In the ribosomes
Outside the cell
What is the location for the second and third parts of Aerobic respiration?
In the cytosol
In the ribosomes
In the mitochondria
In the nucleus
What is the role of mitochondria in the cell?
They are responsible for protein synthesis
They generate most of the cell's supply of adenosine triphosphate (ATP)
They are involved in the process of cell division
They store genetic information
Which statement is true about the number of mitochondria in a cell?
All cells have the same number of mitochondria
The number of mitochondria in a cell is fixed for all eukaryotic organisms
The number of mitochondria in a cell can vary widely by organism, tissue, and cell type
The number of mitochondria in a cell decreases with the cell's energy demand
What is a unique feature of the mitochondria's double membrane?
It prevents any exchange of materials with the cytosol
It allows mitochondria to move freely within the cell
It creates different regions within the mitochondria that can carry out specialized functions
It is the site where DNA replication occurs
How many stages does aerobic respiration have?
1
2
3
4
Where does glycolysis occur in the cell?
In the nucleus
In the cytosol
In the cell membrane
In the mitochondria
What cycle occurs in the mitochondria during aerobic respiration?
Calvin Cycle
Krebs Cycle
Urea Cycle
Citric Acid Cycle
Which of the following is a general input of aerobic respiration?
Carbon dioxide (CO₂)
Water (H₂O)
Glucose (C₆H₁₂O₆)
ATP
What is a common product of aerobic respiration?
Glucose (C₆H₁₂O₆)
Oxygen (O₂)
Carbon dioxide (CO₂)
Pyruvate
Where does the electron transport chain occur in the cell?
In the cytosol
In the nucleus
In the cell membrane
In the mitochondria
What is the first stage of aerobic respiration?
Krebs Cycle
Electron Transport Chain
Glycolysis
Fermentation
During glycolysis, glucose is broken down into how many molecules of pyruvate?
4
1
3
2
How many ATP molecules are produced overall in the Krebs Cycle?
2
26 or 28
4
6
Where does the Krebs Cycle occur?
In the cytosol
In the Matrix of the mitochondria
In the chloroplast
On the ribosomes
What is the overall ATP yield from the Electron Transport Chain?
2
4
26 or 28
32
Where does glycolysis occur?
In the Matrix of the mitochondria
In the chloroplast
In the cytosol
On the ribosomes
What molecule is produced from Pyruvate to enter the Krebs Cycle?
Glucose
NADH
Acetyl CoA
ATP
What causes the synthesis of ATP in the Electron Transport Chain?
Glucose breakdown
Oxygen presence
H+ (proton) gradient
CO2 release
What is the role of NADH and FADH2?
They are enzymes that break down glucose.
They are coenzymes that transport protons and electrons between reactions
They are substrates used in the Krebs cycle.
They are proteins that transport oxygen.
What do NADH and FADH2 carry along with them?
Only electrons
Only hydrogen/protons
Both electrons and hydrogen/protons
Only ATP molecules
What is the ultimate purpose of NADH and FADH2 in cellular respiration?
To synthesize DNA and RNA
To produce glucose
To transfer energy to form ATP
To create carbon dioxide and water
Where does glycolysis occur?
Mitochondria
Cytosol
Nucleus
Endoplasmic reticulum
Does glycolysis require oxygen?
Yes
No
Only in prokaryotes
Only in eukaryotes
What are the inputs of glycolysis?
Oxygen and glucose
Glucose and ATP
Glucose only
ATP and NADH
What are the net outputs of glycolysis?
2 molecules of ATP, 2 pyruvate molecules, 2 loaded NADH molecules
2 molecules of ATP, 2 pyruvate molecules, 2 loaded FADH2 molecules
4 molecules of ATP, 2 pyruvate molecules, 2 loaded NADH molecules
4 molecules of ATP, 2 pyruvate molecules, 2 loaded FADH2 molecules
What does "GLYCO" refer to in the term glycolysis?
Muscle
Sugar
Fat
Protein
What does "LYSIS" refer to in the term glycolysis?
Creation
Breakdown
Transformation
Utilization
How many net ATP molecules are produced from glycolysis?
2
4
6
8
Can glycolysis occur in prokaryotes?
Yes
No
Only with oxygen
Only without oxygen
How many carbon atoms are there in one molecule of glucose before it undergoes glycolysis?
2
3
6
12
Into how many molecules of pyruvate is one molecule of glucose broken down during glycolysis?
1
2
3
4
What is the net release of ATP molecules after one molecule of glucose undergoes glycolysis?
1 ATP
2 ATP
3 ATP
4 ATP
Which molecule will pick up and become a carrier for hydrogen released during glycolysis?
ADP
ATP
NAD
NADH
What is the main purpose of glycolysis in aerobic respiration?
To produce glucose
To break down pyruvate
To drive the ADP->ATP cycle
To consume ATP
In glycolysis, the ATP yield per molecule of glucose is
4 ATP produced and 2 ATP used for a net gain of 2 ATP.
2 ATP produced and 4 ATP used for a net loss of 2 ATP.
36 to 38 ATP produced for a net gain of 2 ATP.
36 to 38 ATP used for a net loss of 2 ATP.
What molecule is formed from pyruvate before it enters the Krebs Cycle?
Glucose
Lactate
Acetyl CoA
Glycerol
Where does the conversion of pyruvate to Acetyl CoA occur?
In the cytosol
In the mitochondrial matrix
In the ribosome
On the cell membrane
What is NOT a product of the conversion of pyruvate to Acetyl CoA?
CO2
NADH + H+
ATP
Acetyl CoA
How many molecules of NADH are produced from a single pyruvate during the conversion to Acetyl CoA?
1
2
3
4
Which compound actually enters the Krebs Cycle?
Pyruvate
Acetate
Acetyl CoA
CO2
Where do the two Acetyl CoA molecules enter during aerobic respiration in the Krebs cycle?
Outer membrane of the mitochondria
Inner membrane of the mitochondria
Matrix of the mitochondria
Intermembrane space of the mitochondria
What is another name for the Krebs cycle?
Glycolysis cycle
Electron transport chain
Citric acid cycle
Lactic acid cycle
What are the inputs for the Krebs cycle?
Glucose and Oxygen
2 Acetyl CoA molecules and Oxygen
2 Acetyl CoA molecules from the Pyruvate produced by Glycolysis
Glucose and Pyruvate produced by Glycolysis
What are the outputs of the Krebs cycle?
2 molecules of ATP, 4 carbon dioxide molecules, NADH molecules
2 molecules of ATP, 2 carbon dioxide molecules, FADH2 molecules
4 molecules of ATP, 4 carbon dioxide molecules, NADH molecules
4 molecules of ATP, 2 carbon dioxide molecules, FADH2 molecules
What is the nature of the Krebs cycle?
It is an open-ended process.
It is a linear pathway.
It is a closed loop.
It is a reversible cycle.
The cellular location of Krebs cycle is
The lumen of the smooth endoplasmic reticulum
The grana of the chloroplast
The cytosol of an autotrophic cell
The matrix of the mitochondria
The Krebs cycle undergoes 2 cycles to completely account for all the carbons from glucose. The total amount of products of this process would be
CO₂, ATP, NADH and FADH₂
2CO₂, ATP, 3NADH and FADH₂
4CO₂, 2ATP, 6NADH and 2FADH₂
6CO₂ and 34-36ATP
What is the final stage of aerobic respiration called?
Glycolysis
Krebs Cycle
Electron Transport Chain
Fermentation
Where is the electron transport chain located?
In the cytoplasm
On the inner mitochondrial membrane
On the outer mitochondrial membrane
Within the nucleus
What are the folds in the inner mitochondrial membrane known as?
Ribosomes
Cristae
Lysosomes
Golgi apparatus
What is the role of Cytochromes in aerobic respiration?
They produce ATP directly.
They move H+ ions from the matrix of the mitochondria to the intermembrane space.
They convert glucose into pyruvate.
They synthesize proteins.
What are the inputs for the electron transport chain in aerobic respiration?
Oxygen, ATP, and NADH
Glucose, Oxygen, and ATP
NADH, FADH2, and Oxygen
Glucose and Pyruvate
What are the outputs of the electron transport chain in aerobic respiration?
ATP, water, and carbon dioxide
ATP and water
NADH and FADH2
Oxygen and glucose
What do NADH and FADH2 donate to the proteins embedded in the inner membrane during the electron transport chain?
ATP and electrons
Protons (H+) and electrons (e-)
Oxygen and carbon dioxide
Glucose and fructose
What is the result of electrons being passed along the proteins in the membrane during the electron transport chain?
Production of glucose
Pumping of H+ from the matrix into the intermembrane space
Release of oxygen
Absorption of carbon dioxide
What is the final acceptor of electrons in the electron transport chain?
Carbon dioxide
ATP
Oxygen
NAD+
What molecule is formed as a result of the final electron transfer in the electron transport chain?
Carbon dioxide
Glucose
Water (H2O)
ATP
What is left in the mitochondria after the electron transport chain is completed?
High concentration of glucose
Low concentration of H+ ions
High concentration of H+ ions
Freshly made ATP
