Question 1

Which of the following statements is true?

Accepted Answer

A)  During cellular respiration, ATP energy is converted into carbohydrate. 
B)  During cellular respiration, mitochondria release oxygen. 
C)  During photosynthesis, energy from the sun is used to form lipids and proteins. 
D)  During photosynthesis, carbon dioxide is used. 
E)  During photosynthesis, NADH and FADH2 are the electron carriers. 
A)  During cellular respiration, ATP energy is converted into carbohydrate. 
B)  During cellular respiration, mitochondria release oxygen. 
C)  During photosynthesis, energy from the sun is used to form lipids and proteins. 
D)  During photosynthesis, carbon dioxide is used. 
E)  During photosynthesis, NADH and FADH2 are the electron carriers.

Question 2

Which part of photosynthesis occurs in the stroma?

Accepted Answer

A)  noncyclic electron pathway 
B)  cyclic electron pathway 
C)  electron transport chain 
D)  light reactions 
E)  Calvin cycle reactions 
A)  noncyclic electron pathway 
B)  cyclic electron pathway 
C)  electron transport chain 
D)  light reactions 
E)  Calvin cycle reactions

Question 3

Heterotrophs

Accepted Answer

A)  have the ability to synthesize organic molecules from inorganic molecules. 
B)  are ultimately dependent upon preformed organic molecules made by producers. 
C)  are the origin of all food for the rest of the living world. 
D)  are also called autotrophs. 
E)  None of the answer choices are characteristic of heterotrophs. 
A)  have the ability to synthesize organic molecules from inorganic molecules. 
B)  are ultimately dependent upon preformed organic molecules made by producers. 
C)  are the origin of all food for the rest of the living world. 
D)  are also called autotrophs. 
E)  None of the answer choices are characteristic of heterotrophs.

Question 4

How many membranes does a chloroplast have?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five 
A)  one 
B)  two 
C)  three 
D)  four 
E)  five

Question 5

The reservoir for H+ during photosynthesis is the

Accepted Answer

A)  stroma. 
B)  thylakoid membrane. 
C)  thylakoid space. 
D)  cytoplasm. 
E)  matrix. 
A)  stroma. 
B)  thylakoid membrane. 
C)  thylakoid space. 
D)  cytoplasm. 
E)  matrix.

Question 6

Which pathway is the foundation for the majority of ecosystems and food chains on Earth?

Accepted Answer

A)  photosynthesis 
B)  anaerobic respiration 
C)  aerobic respiration 
D)  chemosynthesis 
E)  decomposition 
A)  photosynthesis 
B)  anaerobic respiration 
C)  aerobic respiration 
D)  chemosynthesis 
E)  decomposition

Question 7

The Calvin cycle reactions are dependent upon a supply of

Accepted Answer

A)  water and carbon dioxide. 
B)  carbon dioxide and NADPH. 
C)  carbon dioxide, NADPH, and ATP. 
D)  oxygen and carbon dioxide. 
E)  glucose and carbon dioxide. 
A)  water and carbon dioxide. 
B)  carbon dioxide and NADPH. 
C)  carbon dioxide, NADPH, and ATP. 
D)  oxygen and carbon dioxide. 
E)  glucose and carbon dioxide.

Question 8

What are the two sets of reactions for photosynthesis?

Accepted Answer

A)  light reactions, Calvin cycle 
B)  glycolysis, citric acid cycle 
C)  light reactions, glycolysis 
D)  Calvin cycle, citric acid cycle 
E)  electron transport chain, light reactions 
A)  light reactions, Calvin cycle 
B)  glycolysis, citric acid cycle 
C)  light reactions, glycolysis 
D)  Calvin cycle, citric acid cycle 
E)  electron transport chain, light reactions

Question 9

What does the term stroma refer to?

Accepted Answer

A)  the cytochrome system in the membranes of the thylakoids 
B)  a stack of thylakoid membrane structures 
C)  the double membrane of the chloroplast 
D)  a flattened disk or sac in the chloroplast 
E)  the central fluid-filled space of the chloroplast 
A)  the cytochrome system in the membranes of the thylakoids 
B)  a stack of thylakoid membrane structures 
C)  the double membrane of the chloroplast 
D)  a flattened disk or sac in the chloroplast 
E)  the central fluid-filled space of the chloroplast

Question 10

Plants need other molecules besides glucose. Where do these molecules, such as cellulose and fructose, come from?

Accepted Answer

A)  Glucose must always be produced first; glucose can then be used as the monomer to form everything else. 
B)  G3P is directly converted to many other organic molecules besides glucose. 
C)  Plants absorb those molecules from the environment through their roots. 
D)  Any molecule beyond glucose must be converted from plant tissues already present. 
E)  Alternative forms of photosynthesis beyond those described must be producing those molecules. 
A)  Glucose must always be produced first; glucose can then be used as the monomer to form everything else. 
B)  G3P is directly converted to many other organic molecules besides glucose. 
C)  Plants absorb those molecules from the environment through their roots. 
D)  Any molecule beyond glucose must be converted from plant tissues already present. 
E)  Alternative forms of photosynthesis beyond those described must be producing those molecules.

Question 11

CAM plants

Accepted Answer

A)  do not perform any part of photosynthesis during the day. 
B)  fix CO2 in mesophyll cells during the day. 
C)  include economically important food crops like corn and sugarcane. 
D)  open their stomata at night to minimize water loss. 
E)  typically grow very quickly because they are found in hot, moist environments. 
A)  do not perform any part of photosynthesis during the day. 
B)  fix CO2 in mesophyll cells during the day. 
C)  include economically important food crops like corn and sugarcane. 
D)  open their stomata at night to minimize water loss. 
E)  typically grow very quickly because they are found in hot, moist environments.

Question 12

Which of the following is a substrate in the photosynthesis equation?

Accepted Answer

A)  CO2 
B)  O2 
C)  C6H12O6 
D)  H2 
A)  CO2 
B)  O2 
C)  C6H12O6 
D)  H2

Question 13

The first step of the cyclic electron pathway involves the removal of the electrons from water.

Accepted Answer

A) True 
 B)False

Question 14

In the process of photosynthesis, the light reactions follow the Calvin cycle reactions.

Accepted Answer

A) True 
 B)False

Question 15

Explain why chlorophyll appears green to our eyes.

Accepted Answer

When the wavelengths of visible light en

Question 16

Which of the following is a CAM plant?

Accepted Answer

A)  rice 
B)  cactus 
C)  corn 
D)  wheat 
E)  sugarcane 
A)  rice 
B)  cactus 
C)  corn 
D)  wheat 
E)  sugarcane

Question 17

The ATP synthase complex in cellular respiration and photosynthesis

Accepted Answer

A)  both produce ATP. 
B)  both work via chemiosmosis. 
C)  both require a H+ gradient. 
D)  both are located in a membrane. 
E)  All of the answers are correct. 
A)  both produce ATP. 
B)  both work via chemiosmosis. 
C)  both require a H+ gradient. 
D)  both are located in a membrane. 
E)  All of the answers are correct.

Question 18

The cyclic electron pathway produces only

Accepted Answer

A)  NADPH. 
B)  ATP. 
C)  NAD+. 
D)  oxygen. 
E)  carbon dioxide. 
A)  NADPH. 
B)  ATP. 
C)  NAD+. 
D)  oxygen. 
E)  carbon dioxide.

Question 19

The raw materials or reactants of photosynthesis include

Accepted Answer

A)  glucose and oxygen. 
B)  carbon dioxide and glucose. 
C)  carbon dioxide and water. 
D)  carbon dioxide and oxygen. 
E)  glucose and water. 
A)  glucose and oxygen. 
B)  carbon dioxide and glucose. 
C)  carbon dioxide and water. 
D)  carbon dioxide and oxygen. 
E)  glucose and water.

Question 20

The H+ (protons) accumulate in the thylakoid space during electron transport between photosystems I and II. The excess of protons in the thylakoid space

Accepted Answer

A)  enters the photorespiration pathway. 
B)  raises the pH of the space until the processes stop. 
C)  is small enough to diffuse back out through the lipid bilayer. 
D)  converts NADP+ to NADPH and generates ATP in the process. 
E)  moves from the thylakoid space to the stroma through the ATP synthase complex. 
A)  enters the photorespiration pathway. 
B)  raises the pH of the space until the processes stop. 
C)  is small enough to diffuse back out through the lipid bilayer. 
D)  converts NADP+ to NADPH and generates ATP in the process. 
E)  moves from the thylakoid space to the stroma through the ATP synthase complex.

Exam 8: Photosynthesis

Which of the following statements is true?

Which part of photosynthesis occurs in the stroma?

Heterotrophs

How many membranes does a chloroplast have?

The reservoir for H+ during photosynthesis is the

Which pathway is the foundation for the majority of ecosystems and food chains on Earth?

The Calvin cycle reactions are dependent upon a supply of

What are the two sets of reactions for photosynthesis?

What does the term stroma refer to?

Plants need other molecules besides glucose. Where do these molecules, such as cellulose and fructose, come from?

CAM plants

Which of the following is a substrate in the photosynthesis equation?

The first step of the cyclic electron pathway involves the removal of the electrons from water.

In the process of photosynthesis, the light reactions follow the Calvin cycle reactions.

Explain why chlorophyll appears green to our eyes.

Which of the following is a CAM plant?

The ATP synthase complex in cellular respiration and photosynthesis

The cyclic electron pathway produces only

The raw materials or reactants of photosynthesis include

The H+ (protons) accumulate in the thylakoid space during electron transport between photosystems I and II. The excess of protons in the thylakoid space

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The reservoir for H⁺ during photosynthesis is the

The H⁺ (protons) accumulate in the thylakoid space during electron transport between photosystems I and II. The excess of protons in the thylakoid space