Question 1

F.F.Blackman performed experiments to investigate the effects of various factors on photosynthesis.In one of his experiments,Blackman found that if light intensity was low,photosynthesis could be accelerated by increasing the amount of light,but not by increasing the temperature or carbon dioxide concentration.What can you conclude from this specific experiment?

Accepted Answer

A)  Light is important for photosynthesis
B)  Carbon dioxide is important for photosynthesis
C)  High temperatures are important for photosynthesis
D)  Photosynthesis generates oxygenE) A) and C)
F) None of the above

Question 2

Which experimental modification would most effectively help to determine the sequence of reactions and reaction intermediates in the Calvin cycle?

Accepted Answer

A)  Exposing the cells to 14CO2 for various time intervals
B)  Exposing the cells to alternating periods of light and darkness
C)  Exposing the cells to radiolabeled O2 instead of 14CO2
D)  Varying the amount of water the cells are exposed toE) A) and B)
F) All of the above

Question 3

What products of light reactions of photosynthesis are used in the Calvin cycle?

Accepted Answer

A)  oxygen and protons
B)  carbon dioxide and water
C)  ATP and NADPH
D)  ADP and NADP
E)  glucose and oxygenF) A) and B)
G) C) and D)

Question 4

If a plant's stomata were always closed,how would this affect the plant's ability to make glucose?

Accepted Answer

A)  There would be no effect on the ability of the plant to make glucose
B)  Plants would be able to make more sugar than normal
C)  Plants would make less sugar than normalD) A) and C)
E) B) and C)

Question 5

Clusters of chlorophyll and accessory pigments are called ________.

Accepted Answer

A)  the Golgi apparatus
B)  chloroplasts
C)  photosystems
D)  photosynthetic membranesE) A) and B)
F) All of the above

Question 6

Jan Baptista van Helmont did an important experiment related to photosynthesis.He weighed a small willow tree and a pot of soil.Jan then planted the tree in the pot.Over the course of five years,he added only water to the pot.At the end of five years,he weighed the tree and found that it had gained 74.4 kg.He weighed the soil,and it was only 57 g less.What do the results of this specific experiment demonstrate about what is needed for a plant to grow and increase its mass?

Accepted Answer

A)  All of the food a plant needs to grow comes from the soil
B)  Plants do not need soil to grow
C)  Plants must be able to increase their mass using substances in addition to what is found in soil
D)  All of the food a plant needs to grow comes from the water
E)  Plants need oxygen to growF) A) and D)
G) A) and C)

Question 7

If chlorophyll a is blocked from absorbing light,what would be the effect on the ability of the plant to do photosynthesis?

Accepted Answer

A)  The plant will have an enhanced ability to carry out light-dependent reactions
B)  The plant will have an enhanced ability to carry out light-independent reactions
C)  The plant will have a decreased ability to carry out light-dependent reactions
D)  The plant's ability to carry out photosynthesis will be unchanged,as one of the accessory pigments can fill in for chlorophyll aE) A) and C)
F) B) and D)

Question 8

Visible light has a wavelength range of

Accepted Answer

A)  400-740 nanometers.
B)  200-800 nanometers.
C)  200-400 nanometers.
D)  200-740 nanometers.
E)  0) 001-100,000 nanometers.F) A) and C)
G) C) and D)

Question 9

One of the disadvantages of the C4 pathway is that it requires

Accepted Answer

A)  more O2.
B)  more NADPH.
C)  more light.
D)  more ATP.
E)  a much higher temperature.F) All of the above
G) B) and E)

Question 10

The photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific reaction center chlorophyll,which in turn passes the energy to

Accepted Answer

A)  photosystem I.
B)  photosystem II.
C)  the primary electron acceptor.
D)  the secondary electron center.
E)  cytochrome.F) D) and E)
G) A) and E)

Question 11

You are working on a research project that involves a mutational analysis of the light harvesting complex Lhca1,which is an important light harvesting complex found in plants.Your labmate asks where this complex is located.You say it is in the

Accepted Answer

A)  outer chloroplast membrane
B)  inner chloroplast membrane
C)  thylakoid membrane
D)  stroma
E)  matrixF) D) and E)
G) C) and D)

Question 12

In eukaryotes,photosynthesis takes place inside the ________.

Accepted Answer

A)  chloroplasts
B)  mitochondria
C)  cytoplasm
D)  Golgi apparatusE) A) and B)
F) A) and C)

Question 13

If the Calvin cycle were to be temporarily restricted,the highest concentration of NADPH would likely be in the

Accepted Answer

A)  thylakoid space.
B)  thylakoid membrane.
C)  stroma.
D)  chloroplast outer membrane.E) B) and D)
F) B) and C)

Question 14

Fall leaf color on deciduous trees is a result of

Accepted Answer

A)  the production of more accessory pigments because of the cooler temperatures.
B)  the reduction in the production of accessory pigments.
C)  cessation of chlorophyll production,which allows the accessory pigments to be revealed.
D)  the increased angle of the sun during the fall,which reflects more of the accessory pigments.E) B) and D)
F) None of the above

Question 15

In photosynthesis,carbon fixation occurs:

Accepted Answer

A)  in photosystem I
B)  in the electron transport chain
C)  in photosystem II
D)  in the Calvin cycle
E)  during photorespirationF) B) and E)
G) A) and E)

Question 16

The splitting of water and the generation of oxygen occur where?

Accepted Answer

A)  Photosystem I
B)  The Krebs Cycle
C)  The Calvin Cycle
D)  Photosystem IIE) None of the above
F) B) and C)

Question 17

If you exposed a C4 plant to 14CO2 in the light,which would be the first organic molecule labeled with 14C?

Accepted Answer

A)  oxaloacetate
B)  malate
C)  pyruvate
D)  phosphoenolpyruvate (PEP) E) B) and D)
F) C) and D)

Question 18

In order to generate one glucose molecule,the Calvin cycle has to turn how many times?

Accepted Answer

A)  1
B)  2
C)  3
D)  6
E)  12F) A) and B)
G) A) and C)

Question 19

In the light-independent reactions,when CO2 is added to a molecule of Ribulose 1,5-bisphosphate (RuBP) the product is

Accepted Answer

A)  citric acid.
B)  glucose.
C)  glyceraldehyde-3-phosphate.
D)  3-phosphoglycerate.
E)  pyruvate.F) A) and B)
G) All of the above

Question 20

How many molecules of CO2 are needed to generate one molecule of glucose?

Accepted Answer

A)  2
B)  3
C)  4
D)  5
E)  6F) B) and E)
G) B) and D)

Exam 8: Photosynthesis

How many molecules of CO₂ are needed to generate one molecule of glucose?

Correct Answer
verified

Visible light has a wavelength range of

Correct Answer
verified

Correct Answer
verified

If a plant's stomata were always closed,how would this affect the plant's ability to make glucose?

Correct Answer
verified

Fall leaf color on deciduous trees is a result of

Correct Answer
verified

One of the disadvantages of the C₄ pathway is that it requires

Correct Answer
verified

In eukaryotes,photosynthesis takes place inside the ________.

Correct Answer
verified

Correct Answer
verified

In order to generate one glucose molecule,the Calvin cycle has to turn how many times?

Correct Answer
verified

If chlorophyll a is blocked from absorbing light,what would be the effect on the ability of the plant to do photosynthesis?

Correct Answer
verified

If you exposed a C₄ plant to ¹⁴CO₂ in the light,which would be the first organic molecule labeled with ¹⁴C?

Correct Answer
verified

In the light-independent reactions,when CO₂ is added to a molecule of Ribulose 1,5-bisphosphate (RuBP) the product is

Correct Answer
verified

In photosynthesis,carbon fixation occurs:

Correct Answer
verified

What products of light reactions of photosynthesis are used in the Calvin cycle?

Correct Answer
verified

Which experimental modification would most effectively help to determine the sequence of reactions and reaction intermediates in the Calvin cycle?

Correct Answer
verified

Clusters of chlorophyll and accessory pigments are called ________.

Correct Answer
verified

The splitting of water and the generation of oxygen occur where?

Correct Answer
verified

If the Calvin cycle were to be temporarily restricted,the highest concentration of NADPH would likely be in the

Correct Answer
verified

The photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific reaction center chlorophyll,which in turn passes the energy to

Correct Answer
verified

You are working on a research project that involves a mutational analysis of the light harvesting complex Lhca1,which is an important light harvesting complex found in plants.Your labmate asks where this complex is located.You say it is in the

Correct Answer
verified

Exam 8: Photosynthesis

How many molecules of CO2 are needed to generate one molecule of glucose?

Correct AnswerverifiedShow Answer

Visible light has a wavelength range of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

If a plant's stomata were always closed,how would this affect the plant's ability to make glucose?

Correct AnswerverifiedShow Answer

Fall leaf color on deciduous trees is a result of

Correct AnswerverifiedShow Answer

One of the disadvantages of the C4 pathway is that it requires

Correct AnswerverifiedShow Answer

In eukaryotes,photosynthesis takes place inside the ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In order to generate one glucose molecule,the Calvin cycle has to turn how many times?

Correct AnswerverifiedShow Answer

If chlorophyll a is blocked from absorbing light,what would be the effect on the ability of the plant to do photosynthesis?

Correct AnswerverifiedShow Answer

If you exposed a C4 plant to 14CO2 in the light,which would be the first organic molecule labeled with 14C?

Correct AnswerverifiedShow Answer

In the light-independent reactions,when CO2 is added to a molecule of Ribulose 1,5-bisphosphate (RuBP) the product is

Correct AnswerverifiedShow Answer

In photosynthesis,carbon fixation occurs:

Correct AnswerverifiedShow Answer

What products of light reactions of photosynthesis are used in the Calvin cycle?

Correct AnswerverifiedShow Answer

Which experimental modification would most effectively help to determine the sequence of reactions and reaction intermediates in the Calvin cycle?

Correct AnswerverifiedShow Answer

Clusters of chlorophyll and accessory pigments are called ________.

Correct AnswerverifiedShow Answer

The splitting of water and the generation of oxygen occur where?

Correct AnswerverifiedShow Answer

If the Calvin cycle were to be temporarily restricted,the highest concentration of NADPH would likely be in the

Correct AnswerverifiedShow Answer

The photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific reaction center chlorophyll,which in turn passes the energy to

Correct AnswerverifiedShow Answer

You are working on a research project that involves a mutational analysis of the light harvesting complex Lhca1,which is an important light harvesting complex found in plants.Your labmate asks where this complex is located.You say it is in the

Correct AnswerverifiedShow Answer

How many molecules of CO₂ are needed to generate one molecule of glucose?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

One of the disadvantages of the C₄ pathway is that it requires

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If you exposed a C₄ plant to ¹⁴CO₂ in the light,which would be the first organic molecule labeled with ¹⁴C?

Correct Answer
verified

In the light-independent reactions,when CO₂ is added to a molecule of Ribulose 1,5-bisphosphate (RuBP) the product is

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