Question 1

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

Question 2

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 oxygen 
A) Light is important for photosynthesis 
B) Carbon dioxide is important for photosynthesis 
C) High temperatures are important for photosynthesis 
D) Photosynthesis generates oxygen

Question 3

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 to 
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 to

Question 4

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

Question 5

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 II 
A) Photosystem I 
B) The Krebs Cycle 
C) The Calvin Cycle 
D) Photosystem II

Question 6

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

Question 7

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

Question 8

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. 
A) more O2. 
B) more NADPH. 
C) more light. 
D) more ATP. 
E) a much higher temperature.

Question 9

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 grow 
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 grow

Question 10

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 a 
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 a

Question 11

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) 12 
A) 1 
B) 2 
C) 3 
D) 6 
E) 12

Question 12

In eukaryotes,photosynthesis takes place inside the ________.

Accepted Answer

A) chloroplasts 
B) mitochondria 
C) cytoplasm 
D) Golgi apparatus 
A) chloroplasts 
B) mitochondria 
C) cytoplasm 
D) Golgi apparatus

Question 13

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. 
A) citric acid. 
B) glucose. 
C) glyceraldehyde-3-phosphate. 
D) 3-phosphoglycerate. 
E) pyruvate.

Question 14

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

Question 15

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

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6

Question 16

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. 
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.

Question 17

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 normal 
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 normal

Question 18

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) 
A) oxaloacetate 
B) malate 
C) pyruvate 
D) phosphoenolpyruvate (PEP)

Question 19

Clusters of chlorophyll and accessory pigments are called ________.

Accepted Answer

A) the Golgi apparatus 
B) chloroplasts 
C) photosystems 
D) photosynthetic membranes 
A) the Golgi apparatus 
B) chloroplasts 
C) photosystems 
D) photosynthetic membranes

Question 20

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) matrix 
A) outer chloroplast membrane 
B) inner chloroplast membrane 
C) thylakoid membrane 
D) stroma 
E) matrix

Exam 8: Photosynthesis

Visible light has a wavelength range of

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

In photosynthesis,carbon fixation occurs:

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

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

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

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

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

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

In eukaryotes,photosynthesis takes place inside the ________.

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

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

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

Fall leaf color on deciduous trees is a result of

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

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

Clusters of chlorophyll and accessory pigments are called ________.

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

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

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

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

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