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- 1. Multiple Choice
Which of the following is the first reaction in aerobic respiration?
Glycolysis
Krebs Cycle
Electron Transport Chain
Calvin Cycle
- 2. Multiple Choice
Which of the following is a reactant for aerobic respiration that makes respiration "aerobic"?
ATP
Carbon Dioxide
Oxygen gas
Glucose
- 3. Multiple Choice
How is chemical energy released in a cell?
Forming bonds
Breaking bonds
Forming atoms
Breaking down atoms
- 4. Multiple Choice
What molecule do animal and plant cells use to power processes in the cell?
ATP
Glucose
NADH
Oxygen Gas
- 5. Multiple Choice
Which molecule contains the stored chemical energy that is released in aerobic respiration?
ATP
Carbon Dioxide
Glucose
Oxygen Gas
- 6. Multiple Choice
Where does the electron transport chain take place?
Cell membrane
Chloroplast
Cytoplasm
Mitocchondria
- 7. Multiple Choice
Which part of aerobic respiration makes the most ATP?
Calvin Cyle
Electron Transport Chain
Glycolysis
Krebs Cycle
- 8. Multiple Choice
Which of the following is made during the Krebs Cycle?
Carbon Dioxide
Glucose
Oxygen Gas
Water
- 9. Multiple Choice
Cell respiration is aerobic because...
It is used to gives cell the energy needed to work.
It produces oxygen gas in the electron transport chain
It uses oxygen gas in the electron transport chain.
It produces water at the end of the electron transport chain.
- 10. Multiple Choice
What are the reactants for cell respiration?
Carbon dioxide and water
carbon dioxide and glucose
glucose and water
glucose and oxygen gas
- 11. Multiple Choice
What is pumped into the inner membrane space during the electron transport chain?
Carbon dioxide
Electrons
Hydrogen ions
Oxygen gas
- 12. Multiple Choice
Why is oxygen gas important in aerobic respiration?
It provides energy to the cell.
It creates an environment that is favorable doing glycolysis.
It donates electrons to the electron transport chain.
It absorbs electrons at the end of the electron transport chain.
- 13. Multiple Choice
Why do plants do aerobic respiration even though they also do photosynthesis?
To prevent heterotrophs from using the glucose that plant cells made in photosynthesis.
To breathe in oxygen gas to keep their cells alive.
To use the stored chemical energy made during photosynthesis.
To balance photosynthesis and prevent too much sugar from building up in the cell.
- 14. Multiple Choice
Which organisms do aerobic respiration?
Autotrophs
Heterotrophs
All of the above
- 15. Multiple Choice
What is made at the end of glycolysis?
Carbon dioxide
FADH2
Pyruvate
Water
- 16. Multiple Choice
Why is NADH important?
It absrobs damaging electrons moving around the cell.
It transfer electrons and hydrogen to electron transport chain.
It is made during the Krebs Cycle.
It can be recycled and used again.
- 17. Multiple Choice
What product of the Krebs Cycle gets used in the Electron Transport Chain
ATP
Carbon Dioixde
NADH
Water
- 18. Multiple Choice
In cellular respiration, energy is trapped in the form of ATP, which is used
for cellular work, and acts as a “currency” for energy transfers within a cell.
Which everyday item functions in a way similar to ATP?
an electric generator, because it produces electrical energy from a fuel to run
cell processes
a pump, because it moves molecules from one side of a membrane to
another
a rechargeable battery, because it can store energy and then release it
an electric motor, because the charge difference spins the ATP, which allows
for cellular work
- 19. Multiple Choice
Which BEST describes the process of aerobic cellular respiration?
a process that uses nitrogen molecules from the air to make nitrogenous
compounds in living things
a process of energy conversion that releases energy from food in the
presence of oxygen, forming new compounds
a process of energy conversion that captures light energy and transforms it
into chemical energy
a process of energy transfer that converts oxygen gas into liquid water
- 20. Multiple Choice
The first stage of cellular respiration is glycolysis, which literally means
“sugar splitting.” Look at the diagram.
When glucose, a 6-carbon sugar, is broken down during glycolysis, what product
forms?
2 molecules of lactic acid
3 molecules of ethanol
2 molecules of pyruvate
6 molecules of carbon dioxide,
- 21. Multiple Choice
Aerobic cellular respiration traps energy in ATP in 3 stages. Look at the
figure.
In which stage or set of stages is carbon dioxide released?
Glycolysis
Krebs Cycle
Electron Transport
Krebs Cycle and Glycolysis
- 22. Multiple Choice
Which two molecules generated by the Krebs cycle pass their high-
energy electrons to the electron transport chain? Select two answer choices.
NADH
glucose (C 6 H 12 O 6 )
FADH 2
NAD +
- 23. Multiple Choice
How do high-energy electrons from glycolysis and the Krebs cycle
contribute to the formation of ATP from ADP in the electron transport chain?
High-energy electrons interact with pyruvic acid to create a phosphate bond
with ADP, forming ATP.
High-energy electrons pass through the electron transport chain to supply the
needed energy to synthesize ATP from ADP.
High-energy electrons supply a negative charge which causes the citric acid
to oxidize, forming a phosphate group to bond with ADP.
High-energy electrons increase the temperature of ADP so it readily reacts
with a phosphate group to form ATP.
- 24. Multiple Choice
The innermost section of the mitochondria is called...
matrix
cytoplasm
stroma
thylakoid
- 25. Multiple Choice
The first stage of cellular respiration is glycolysis, which literally means
“sugar splitting.” Look at the diagram.
When glucose, a 6-carbon sugar, is broken down during glycolysis, where in the cell does this take place?
ATP
Pyruvate
Cytoplasm
Mitochondria
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