Question 1

Which complex or enzyme of photosynthesis consumes H2O?

Accepted Answer

A)   Photosystem I
B)   Photosystem II
C)   rubisco
D)   electron transport chain
E)   ATP synthaseF) B) and E)
G) B) and D)

Question 2

Why do plants contain other pigments besides chlorophyll?

Accepted Answer

A)   The additional pigments are able to absorb other light wavelengths that chlorophyll cannot.
B)   The additional pigments can only absorb violet or ultraviolet light.
C)   Chlorophyll is unable to absorb visible light.
D)   When chlorophyll breaks down, the additional pigments can absorb the same wavelengths of light.
E)   When the additional pigments break down, the chlorophyll can absorb other wavelengths of light.F) C) and D)
G) B) and C)

Question 3

RuBP carboxylase (rubisco)  is able to bind with both

Accepted Answer

A)   Carbon dioxide and water.
B)   Carbon dioxide and oxygen.
C)   Carbon dioxide and NADPH.
D)   Oxygen and water.
E)   NADPH and ATP.F) B) and D)
G) B) and C)

Question 4

Sucrose, cellulose, amino acids, and starch are all made from what starter molecule in plants?

Accepted Answer

A)   Glucose
B)   Fructose
C)   Glyceraldehyde-3-phosphate (G3P) 
D)   ATP
E)   RuBP carboxylaseF) C) and D)
G) A) and C)

Question 5

The Calvin cycle reactions only occur in bundle sheath cells in a C4 plant

Accepted Answer

A)   to shield the Calvin cycle reactions from O2 in the leaf spaces.
B)   to allow O2 to enter bundle sheath cells.
C)   because rubisco is only found in mesophyll cells.
D)   so that they are adjacent to stomata.
E)   so that H2O is not available to mesophyll cells.F) All of the above
G) C) and E)

Question 6

In a high latitude rainforest, the dominant type of photosynthesis is most likely to be

Accepted Answer

A)   both C3 and CAM.
B)   C4.
C)   CAM.
D)   both C4 and CAM.
E)   C3.F) A) and B)
G) A) and C)

Question 7

Grana are

Accepted Answer

A)   Interconnecting stomata.
B)   Flattened sacs of thylakoid membrane.
C)   Pores that open to allow gas exchange.
D)   The sites of the Calvin cycle and production of sugars.
E)   Enzymes that bind CO2.F) A) and D)
G) A) and E)

Question 8

In which of the labeled cells of a C4 leaf are the Calvin cycle reactions performed?

Accepted Answer

A)   A and B
B)   B and C
C)   A and D
D)   B only
E)   C onlyF) A) and B)
G) B) and D)

Question 9

Which of the following is not derived from G3P?

Accepted Answer

A)   starch
B)   cellulose
C)   glucose phosphate
D)   NADP+
E)   sucroseF) A) and D)
G) C) and D)

Question 10

How many times must the Calvin cycle turn to yield a single molecule of glyceraldehydes-3-phosphate (G3P) .

Accepted Answer

A)   2
B)   3
C)   4
D)   5
E)   6F) None of the above
G) A) and B)

Question 11

Which stages of the Calvin cycle reactions require the use of energy from ATP?

Accepted Answer

A)   CO2 fixation and CO2 reduction
B)   RuBP regeneration and CO2 reduction
C)   CO2 reduction and RuBP regeneration
D)   CO2 fixation and RuBP regeneration
E)   CO2 fixation, CO2 reduction, and RuBP regenerationF) B) and C)
G) A) and E)

Question 12

The localization of the electron transport chains to the thylakoid membrane ensures that

Accepted Answer

A)   the energy released can be used to establish an H+ ion gradient.
B)   the energy released is stored in the stroma.
C)   NADP+ does not enter the thylakoid space.
D)   CO2 remains in the stroma for the Calvin cycle reactions and does not enter the thylakoid space.
E)   glyceraldehyde-3-phosphate (G3P)  is produced in the thylakoid space.F) A) and B)
G) A) and C)

Question 13

What is the major disadvantage of CAM photosynthesis relative to C3 or C4 photosynthesis?

Accepted Answer

A)   lower G3P yield
B)   less water loss
C)   less CO2 availability
D)   fewer electrons available from chlorophyll
E)   fewer NADPH molecules from the light reactionsF) A) and D)
G) B) and C)

Question 14

The light-harvesting complexes of a chloroplast are located in the ______; the enzymes of the Calvin cycle reactions are located in the _________.

Accepted Answer

A)   thylakoid membrane; stroma
B)   stroma; thylakoid space
C)   thylakoid space; thylakoid membrane
D)   stroma; thylakoid membrane
E)   thylakoid space; stromaF) A) and D)
G) C) and E)

Question 15

Replacement electrons for the reaction center of photosystem II are derived from __________.

Accepted Answer

A)   H2O
B)   NADP+
C)   G3P
D)   NADPH
E)   CO2F) C) and E)
G) B) and E)

Question 16

The enzyme-rich solution found within the chloroplast is called the ________.

Accepted Answer

A)   granum
B)   chlorophyll
C)   cytoplasm
D)   stromaE) A) and C)
F) A) and B)

Question 17

Which compounds link the light reactions with the Calvin cycle reactions?

Accepted Answer

A)   ATP and NADPH
B)   H+ and ATP
C)   G3P and ATP
D)   H+ and G3P
E)   G3P and NADPHF) None of the above
G) B) and D)

Question 18

Which of the following organisms can perform photosynthesis?

Accepted Answer

A)   algae
B)   fungi
C)   animals
D)   invertebrates
E)   vertebratesF) B) and C)
G) C) and D)

Question 19

Which of the following events does NOT take place in the light reactions?

Accepted Answer

A)   transfer of electrons to the reaction center of photosystem I
B)   generation of ATP from ADP + Pi
C)   splitting of water, releasing an electron
D)   generation of NADPH from NADP+
E)   conversion of 3PG to G3PF) D) and E)
G) B) and C)

Question 20

The reaction center of photosystem I consists of what type of molecule?

Accepted Answer

A)   chlorophyll a
B)   chlorophyll b
C)   carotenoids
D)   NADP+
E)   electron transport proteinsF) B) and E)
G) B) and D)

Exam 6: Energy for Life

The Calvin cycle reactions only occur in bundle sheath cells in a C4 plant

Correct AnswerverifiedShow Answer

Which compounds link the light reactions with the Calvin cycle reactions?

Correct AnswerverifiedShow Answer

Sucrose, cellulose, amino acids, and starch are all made from what starter molecule in plants?

Correct AnswerverifiedShow Answer

Replacement electrons for the reaction center of photosystem II are derived from __________.

Correct AnswerverifiedShow Answer

What is the major disadvantage of CAM photosynthesis relative to C3 or C4 photosynthesis?

Correct AnswerverifiedShow Answer

The enzyme-rich solution found within the chloroplast is called the ________.

Correct AnswerverifiedShow Answer

Which stages of the Calvin cycle reactions require the use of energy from ATP?

Correct AnswerverifiedShow Answer

The localization of the electron transport chains to the thylakoid membrane ensures that

Correct AnswerverifiedShow Answer

The light-harvesting complexes of a chloroplast are located in the ______; the enzymes of the Calvin cycle reactions are located in the _________.

Correct AnswerverifiedShow Answer

Which of the following is not derived from G3P?

Correct AnswerverifiedShow Answer

Grana are

Correct AnswerverifiedShow Answer

Which complex or enzyme of photosynthesis consumes H2O?

Correct AnswerverifiedShow Answer

Why do plants contain other pigments besides chlorophyll?

Correct AnswerverifiedShow Answer

RuBP carboxylase (rubisco) is able to bind with both

Correct AnswerverifiedShow Answer

Which of the following organisms can perform photosynthesis?

Correct AnswerverifiedShow Answer

In a high latitude rainforest, the dominant type of photosynthesis is most likely to be

Correct AnswerverifiedShow Answer

How many times must the Calvin cycle turn to yield a single molecule of glyceraldehydes-3-phosphate (G3P) .

Correct AnswerverifiedShow Answer

Which of the following events does NOT take place in the light reactions?

Correct AnswerverifiedShow Answer

The reaction center of photosystem I consists of what type of molecule?

Correct AnswerverifiedShow Answer

In which of the labeled cells of a C4 leaf are the Calvin cycle reactions performed?

Correct AnswerverifiedShow Answer

The Calvin cycle reactions only occur in bundle sheath cells in a C₄ plant

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The light-harvesting complexes of a chloroplast are located in the ; the enzymes of the Calvin cycle reactions are located in the ___.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Which complex or enzyme of photosynthesis consumes H₂O?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified