Name:     ID: 
 
Email: 

Photosynthesis and Cellular Respiration

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
Plants need which of the following to carry on photosynthesis?
a.
H2O
b.
CO2
c.
O2
d.
lipid
e.
both H2Oand CO2
 

 2. 
Chlorophyll reflects (does not absorb) which color of light?
a.
red
b.
yellow
c.
orange
d.
green
e.
blue
 

 3. 
When light excites chlorophyll, the chlorophyll molecule
a.
changes to carotene.
b.
becomes agitated and moves rapidly.
c.
becomes radioactive.
d.
absorbs the energy and moves an electron to a higher energy state.
e.
becomes ionized.
 

 4. 
The correct operational sequence of the three processes listed below is:
I. glycolysis
II. ETP
III. Krebs
a.
I ® II ® III
b.
II ® I ® III
c.
III ® I ® II
d.
II ® III ® I
e.
I ® III ® II
 

 5. 
Glycolysis depends on a continuous supply of
a.
NADP.
b.
pyruvate.
c.
NAD+.
d.
NADH.
e.
H2O.
 

 6. 
Glycolysis
a.
occurs in the mitochondria.
b.
happens to glucose only.
c.
results in the production of pyruvate.
d.
occurs in the cytoplasm.
e.
results in the production of pyruvate and occurs in the cytoplasm.
 

 7. 
Pyruvate can be regarded as the end product of
a.
glycolysis.
b.
acetyl CoA formation.
c.
fermentation.
d.
the Krebs cycle.
e.
electron transport.
 

 8. 
Which is capable of being reduced during both glycolysis and the Krebs cycle?
a.
NAD+
b.
FAD+
c.
ADP
d.
NADH
e.
NADP+
 

 9. 
The Krebs cycle takes place in the
a.
ribosomes.
b.
cytoplasm.
c.
nucleus.
d.
mitochondria.
e.
chloroplasts.
 

 10. 
During electron transport phosphorylation, which ions accumulate in the outer compartment of the mitochondria?
a.
calcium
b.
hydrogen
c.
oxygen
d.
phosphorus
e.
sodium
 

 11. 
The ultimate electron acceptor in aerobic respiration is
a.
NAD+
b.
CO2
c.
ADP
d.
NADP+
e.
O2
 

 12. 
The energy used to generate most of the ATP formed in aerobic respiration is released when electrons ultimately are passed from NADH to which of the following?
a.
oxygen
b.
acetyl CoA
c.
FADH
d.
CO2
e.
NADPH
 

 13. 
The generation of concentration gradients across the membranes of mitochondria is known as which theory of ATP production?
a.
glycolytic
b.
negative ion generator
c.
phosphate pump
d.
chemiosmotic
e.
none of these
 

 14. 
Under anaerobic conditions muscle cells produce
a.
ethyl alcohol.
b.
acetaldehyde.
c.
pyruvate.
d.
lactate.
e.
citrate.
 
 
Answer the following questions based on the diagram below.
nar001-1.jpg
 

 15. 
The purpose of the pathway/reaction represented in this diagram is:
a.
to convert glucose into more complex macromolecules necessary in the cell including proteins and lipids.
b.
to use glucose as an energy source to produce ATP when oxygen is not available in the cell.
c.
to convert light energy into chemical energy.
d.
to create energy by converting one molecule into another.
e.
to break down high energy bonds in “food” molecules such as glucose and transfer the energy into molecules that can be used by the rest of the cell.
 

 16. 
The molecules labeled (5):
a.
represent NADH and/or FADH2.
b.
give up high-energy electrons to the electron transport chain.
c.
release individual carbon atoms in food molecules as carbon dioxide.
d.
both (a) and (b) above.
e.
all of the above.
 

 17. 
Which of the following statements is true?
a.
ATP synthase and the proteins involved in the ETC are found in the membrane between the spaces labeled (9) and (10).
b.
Hydrogen ions can freely move between the spaces labeled (8) and (9).
c.
By the end of Step 2, all carbon atoms in glucose are broken down into carbon dioxide.
d.
(6) represents oxygen.
e.
Step 3 is the Calvin cycle.
 

 18. 
Which of the following statements is false?
a.
Step 1 is glycolysis.
b.
Step 2 is pyruvate oxidation.
c.
The carbon dioxide released through this reaction is eventually breathed out of the body.
d.
This entire reaction (Steps 1 through 4) is all taking place in the mitochondria.
e.
Per glucose, the most ATP is produced in Step 4.
 
 
Answer the following questions based on the diagram below:
nar002-1.jpg
 

 19. 
Which letter represents a molecule that provides the energy required to establish a high concentration of ions in the intermembrane space?
a.
1.
b.
2.
c.
4.
d.
5.
e.
7.
 

 20. 
Without this molecule, the cell will be forced to switch ATP production to anaerobic respiration.
a.
1.
b.
2.
c.
4.
d.
5.
e.
7.
 

 21. 
The membrane seen in this diagram is the:
a.
Cell membrane.
b.
Thylakoid membrane.
c.
Nuclear membrane.
d.
Outer mitochondrial membrane.
e.
Inner mitochondrial membrane.
 
 
Answer the following questions based on the diagram below:

nar003-1.jpg
 

 22. 
The above diagram shows a pathway that occurs when:
a.
fats are broken down to make ATP.
b.
oxygen is available to the cell.
c.
oxygen is deficient in the cell.
d.
carbon dioxide is not available.
e.
more ATP than what is produced through aerobic respiration is needed.
 

 23. 
Which statement regarding this diagram is true?
a.
One of the primary purposes of the shown pathway is to regenerate NAD+.
b.
This process occurs in the mitochondria.
c.
This process only occurs in plant cell.
d.
This reaction is far more efficient than the process of ATP production occurring in the mitochondria.
e.
This process can occur indefinitely in the cell.
 
 
Answer the following questions based on the diagram below:

nar004-1.jpg
 

 24. 
When excess food is consumed:
a.
all macromolecules are broken down in order to form ATP.
b.
all macromolecules are converted into glucose in order to go through cellular respiration
c.
cellular respiration is balanced with the storage of excess macromolecules as glycogen, lipids, or other energy-rich molecules.     
d.
the excess food is not digested.
e.
All above statements are true.
 

 25. 
Which of the following statements is false?
a.
Fatty acids contain many covalently bonded carbons.
b.
Fats can release more energy when being broken down into intermediates used in cellular respiration.
c.
Excess glucose can be stored for later use in the form of glycogen.
d.
The breakdown of fats and proteins require additional enzymes than those involved in glycolysis and the Krebs cycle.
e.
All reactions shown in this diagram is a one-way pathway; molecules are only broken down in our cells to produce ATP and these pathways are not related to how molecules are produced in the cell.
 

 26. 
When fats are used for aerobic respiration, enzymes first hydrolyze them into
a.
glycerol and amino acids.
b.
fatty acids and sugars.
c.
sugars and amino acids.
d.
glycerol and fatty acids.
e.
sugars and glycerol.
 
 
Answer the questions based on your understanding of the following diagram. 
nar005-1.jpg
 

 27. 
The reaction represented above takes place where in a cell?
a.
The mitochondria.
b.
The nucleus.
c.
The endoplasmic reticulum.
d.
The matrix.
e.
The Chloroplast.
 

 28. 
This molecule is "fixed" and eventually used to generate glucose, which can be then used for the synthesis of more complex carbohydrates and other organic molecules.
a.
1
b.
2
c.
3
d.
5
e.
Both (1) and (3) are molecules that are “fixed”.
 

 29. 
Which description best summarizes the purpose of the reaction represented by the diagram?
a.
Energy stored in large macromolecules such as glucose is released for use in the cell.
b.
Monomers such as glucose are combined into larger molecules for storage in the cell.
c.
ATP is produced in the cell to drive biological reactions.
d.
Solar energy is converted into chemical energy to synthesize carbohydrates.
e.
All of the above takes place in the reaction represented in the diagram.
 

 30. 
This molecule is released as a byproduct of the light-dependent reactions and is a molecule necessary to generate ATP by metabolizing glucose when light is not available:
a.
1.
b.
2.
c.
3.
d.
5.
e.
None of the above.
 



 
         Start Over