Question 1

Match between columns Premises: consumes O₂

Accepted Answer

The Answer of light-dependent reactions only and Calvin cycle only is...

Question 2

In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed along an electron transport chain to ____. ​

Accepted Answer

A)  NAD+
B)  NADH ​
C)  photosystem I ​
D)  oxygen ​
E)  water ​F) A) and E)
G) D) and E)

Question 3

2D chromatography is so named because ____.

Accepted Answer

A)  there are two steps: labeling with a radioactive marker and separation via chromatography
B)  the molecules are separated into a linear arrangement, meaning two dimensions ​
C)  the process separates the molecules in two directions, first along the x axis and then along the y axis ​
D)  two different solutions are used in the paper chromatography process ​
E)  two different types of radioactive markers must be used ​F) A) and E)
G) D) and E)

Question 4

Suppose you explored a new planet and found a photosynthetic organism unlike any on Earth. You repeat Engelmann's classic experiment using this new organism in place of Spirogyra and find that oxygen-dependent bacteria cluster near the green and yellow portions of the spectrum. What does this tell you? ​

Accepted Answer

A)  The sun of this new planet emits different wavelengths of light than our own.
B)  This new organism is using yellow and green light to drive photosynthesis. ​
C)  This organism appears green, just like plants on Earth. ​
D)  This organism utilizes the most energy-rich photons of the spectrum. ​
E)  This new organism is using blue and red light to drive photosynthesis.F) B) and D)
G) C) and D)

Question 5

If photosynthetic eukaryotic cells are provided with CO2 synthesized with heavy oxygen (18O) , the 18O label may be found in all but one compound. That compound is ____. ​

Accepted Answer

A)  3-phosphoglycerate
B)  cellulose ​
C)  glucose ​
D)  O2 gas ​
E)  RuBP (ribulose bisphosphate) F) A) and C)
G) C) and D)

Question 6

Match between columns
                        Premises: membrane most important in generating a proton gradient for ATP synthesis

Accepted Answer

The Answer of  A and  C and  is...

Question 7

Match between columns
                        Premises: site of light-independent reactions

Accepted Answer

The Answer of  C and  D and  is...

Question 8

Match between columns
                        Premises: stroma

Accepted Answer

The Answer of  B and  E and  is...

Question 9

Rubisco's enzymatic activity is stimulated by NADP+ and ADP. ​

Accepted Answer

A) True 
 B)False

Question 10

Photosynthesis is ____, while all other processes of life are ____. ​

Accepted Answer

A)  exergonic; exothermic
B)  endergonic; endothermic ​
C)  endergonic; exergonic ​
D)  exergonic; endergonic ​
E)  exergonic; endothermic ​F) A) and E)
G) B) and C)

Question 11

Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are small. What is the function of the small subunits? ​

Accepted Answer

A)  The small subunits contain the reactant binding sites.
B)  They stabilize the overall enzyme's structure but have no intrinsic function. ​
C)  The function of the small subunits is still unknown. ​
D)  They regulate the enzyme's rate of catalysis. ​
E)  The small subunits contain allosteric regulator binding sites. ​F) None of the above
G) B) and E) D

Question 12

Atmospheric O2 is a waste product of photosynthesis. ​

Accepted Answer

A) True 
 B)False

Question 13

Carbon fixation is a reduction reaction that converts inorganic CO2 into an organic molecule. ​

Accepted Answer

A) True 
 B)False  True

Question 14

What is the purpose of cyclic electron flow? ​

Accepted Answer

A)  to prevent the formation of NADPH and excessive reactive oxygen species
B)  to prevent the loss of light energy when the ATP production pathway is saturated ​
C)  to ensure that all of the energy harvested by the sun is converted into ATP ​
D)  to protect the cell when CO2 is unavailable and the Calvin cycle is not operating ​
E)  to increase the net production of ATP in times when CO2 is unavailable ​F) All of the above
G) D) and E) A

Question 15

Which statement describes the role of photosynthesis in an ecosystem?

Accepted Answer

A)  Primary producers convert chemical energy to light energy.
B)  Primary consumers rely directly on light energy. ​
C)  Primary producers convert light energy to chemical energy as a service to the ecosystem, not for their own gain. ​
D)  Primary consumers rely on primary producers to make light energy available in a usable form. ​
E)  Primary producers are heterotrophs and thus make no contribution to the flow of energy into the ecosystem. ​F) None of the above
G) A) and B)

Question 16

Which statement correctly summarizes the two phases of photosynthesis?

Accepted Answer

A)  The light-dependent reactions occur in the cytosol; the light-independent reactions occur in the stroma.
B)  The products of the light-dependent reactions are ATP, NADPH, and O2; the products of the light-independent reactions are ADP, NADP+, and sugar. ​
C)  The light-dependent reactions occur only during the daylight hours; the light-independent reactions occur only when it is dark. ​
D)  The light-dependent reactions produce water as a by-product; the light-independent reactions produce carbon dioxide as a waste product.
E)  The products of the light-dependent reactions are ADP, NADP+, and O2; the products of the light-independent reactions are ATP, NADPH, and sugar.F) A) and E)
G) B) and D)

Question 17

The action spectrum of higher plants is bimodal, with two major peaks. Which two molecules largely determine the two peaks?

Accepted Answer

A)  photosystems I and II
B)  P680 and P700 ​
C)  chlorophyll a and chlorophyll b ​
D)  chlorophyll and carotenoid ​
E)  ATP and NADH ​F) B) and E)
G) B) and D)

Question 18

P700 is located in photosystem ____ and is comprised of chlorophyll ____.

Accepted Answer

A)  I; b
B)  I; a ​
C)  II; b ​
D)  II; a ​
E)  I and II; a ​F) A) and E)
G) A) and D)

Question 19

Why isn't the oxygenase function of rubisco active under normal environmental conditions?

Accepted Answer

A)  the oxygenase activity of the enzyme requires more energy
B)  the affinity of the enzyme favors the binding of CO2
C)  the oxygenase activity of the enzyme is inhibited by O2 ​
D)  the binding site of the enzyme is allosterically inhibited under normal conditions ​
E)  the oxygenase binding site has a higher affinity for ATP ​F) A) and D)
G) B) and E)

Question 20

Which plant structure is responsible for gas exchange? ​

Accepted Answer

A)  stroma
B)  stomata ​
C)  thylakoid ​
D)  grana ​
E)  stromal lamellae ​F) A) and B)
G) A) and C)

Exam 8: Photosynthesis

For each of the following statements, choose the most appropriate process. Some choices may be used more than once; some may not be used at all.

In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed along an electron transport chain to ____.

Correct Answer
verified

2D chromatography is so named because ____.

Correct Answer
verified

Correct Answer
verified

If photosynthetic eukaryotic cells are provided with CO₂ synthesized with heavy oxygen (¹⁸O) , the ¹⁸O label may be found in all but one compound. That compound is ____.

Correct Answer
verified

Answer the following questions using the accompanying figure. Identify each structure in the figure below. Some choices may be used more than once. Figure 8.1

Answer the following questions using the accompanying figure. Identify each structure in the figure below. Some choices may be used more than once. Figure 8.1

Answer the following questions using the accompanying figure. Identify each structure in the figure below. Some choices may be used more than once. Figure 8.1

Rubisco's enzymatic activity is stimulated by NADP⁺ and ADP.

Correct Answer
verified

Photosynthesis is , while all other processes of life are .

Correct Answer
verified

Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are small. What is the function of the small subunits?

Correct Answer
verified
D

Atmospheric O₂ is a waste product of photosynthesis.

Correct Answer
verified

Carbon fixation is a reduction reaction that converts inorganic CO₂ into an organic molecule.

Correct Answer
verified
True

What is the purpose of cyclic electron flow?

Correct Answer
verified
A

Which statement describes the role of photosynthesis in an ecosystem?

Correct Answer
verified

Which statement correctly summarizes the two phases of photosynthesis?

Correct Answer
verified

The action spectrum of higher plants is bimodal, with two major peaks. Which two molecules largely determine the two peaks?

Correct Answer
verified

P700 is located in photosystem and is comprised of chlorophyll .

Correct Answer
verified

Why isn't the oxygenase function of rubisco active under normal environmental conditions?

Correct Answer
verified

Which plant structure is responsible for gas exchange?

Correct Answer
verified

Exam 8: Photosynthesis

For each of the following statements, choose the most appropriate process. Some choices may be used more than once; some may not be used at all.

In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed along an electron transport chain to ____. ​

Correct AnswerverifiedShow Answer

2D chromatography is so named because ____.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

If photosynthetic eukaryotic cells are provided with CO2 synthesized with heavy oxygen (18O) , the 18O label may be found in all but one compound. That compound is ____. ​

Correct AnswerverifiedShow Answer

Answer the following questions using the accompanying figure. Identify each structure in the figure below. Some choices may be used more than once. Figure 8.1

Answer the following questions using the accompanying figure. Identify each structure in the figure below. Some choices may be used more than once. Figure 8.1

Answer the following questions using the accompanying figure. Identify each structure in the figure below. Some choices may be used more than once. Figure 8.1

Rubisco's enzymatic activity is stimulated by NADP+ and ADP. ​

Correct AnswerverifiedShow Answer

Photosynthesis is ____, while all other processes of life are ____. ​

Correct AnswerverifiedShow Answer

Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are small. What is the function of the small subunits? ​

Correct AnswerverifiedD

Atmospheric O2 is a waste product of photosynthesis. ​

Correct AnswerverifiedShow Answer

Carbon fixation is a reduction reaction that converts inorganic CO2 into an organic molecule. ​

Correct AnswerverifiedTrue

What is the purpose of cyclic electron flow? ​

Correct AnswerverifiedA

Which statement describes the role of photosynthesis in an ecosystem?

Correct AnswerverifiedShow Answer

Which statement correctly summarizes the two phases of photosynthesis?

Correct AnswerverifiedShow Answer

The action spectrum of higher plants is bimodal, with two major peaks. Which two molecules largely determine the two peaks?

Correct AnswerverifiedShow Answer

P700 is located in photosystem ____ and is comprised of chlorophyll ____.

Correct AnswerverifiedShow Answer

Why isn't the oxygenase function of rubisco active under normal environmental conditions?

Correct AnswerverifiedShow Answer

Which plant structure is responsible for gas exchange? ​

Correct AnswerverifiedShow Answer

In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed along an electron transport chain to ____.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If photosynthetic eukaryotic cells are provided with CO₂ synthesized with heavy oxygen (¹⁸O) , the ¹⁸O label may be found in all but one compound. That compound is ____.

Correct Answer
verified

Rubisco's enzymatic activity is stimulated by NADP⁺ and ADP.

Correct Answer
verified

Photosynthesis is , while all other processes of life are .

Correct Answer
verified

Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are small. What is the function of the small subunits?

Correct Answer
verified
D

Atmospheric O₂ is a waste product of photosynthesis.

Correct Answer
verified

Carbon fixation is a reduction reaction that converts inorganic CO₂ into an organic molecule.

Correct Answer
verified
True

What is the purpose of cyclic electron flow?

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

P700 is located in photosystem and is comprised of chlorophyll .

Correct Answer
verified

Correct Answer
verified

Which plant structure is responsible for gas exchange?

Correct Answer
verified