Question 1

Photosystem I comes before photosystem II in the noncyclic electron pathway.

Accepted Answer

A) True 
 B)False

Question 2

Explain how CAM plants are adapted to a desert type of environment.

Accepted Answer

CAM plants separate components of the ph...

Question 3

An early experiment by Van Helmont (1600s) describes how he grew a tree in a large pot and found that after five years,the amount of soil in the pot had not changed.He concluded that the increase in weight was due to the addition of water.At that time,the compounds of the air had not yet been identified.Today,it is known that he only discovered half the story.Which of these experiments would NOT provide evidence that materials from a source other than water were involved in photosynthesis?

Accepted Answer

A)  Carbon is discovered as a major element in trees and is lacking in water molecules.
B)  Radioactive carbon in carbon dioxide in the air is identified as part of tree structures.
C)  A very careful analysis of the water taken in and lost by the tree would have revealed only part of the added weight gained by the tree was from water.
D)  After adding radioactive water with labeled oxygen to a plant,radioactive oxygen is given off.
E)  Radioactive carbon is found in stored glucose molecules after supplying a plant with radioactive carbon dioxide.F) C) and E)
G) None of the above

Question 4

Which of the following organisms do not have a dependence on photosynthesis for their energy?

Accepted Answer

A)  white-tailed deer
B)  wolves
C)  squirrels
D)  raccoons
E)  All of the answer choices will have a dependency on photosynthesis.F) B) and C)
G) B) and E)

Question 5

What are the two sets of reactions for photosynthesis?

Accepted Answer

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

Question 6

ATP synthase is an enzyme complex located in the thylakoid membranes.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

During photosynthesis,CO2 is reduced.This means that

Accepted Answer

A)  the molecule gains electrons.
B)  CO2 is broken down into two smaller molecules.
C)  the molecule loses electrons.
D)  the molecule loses protons.
E)  CO2 is released into the environment.F) A) and C)
G) A) and D)

Question 9

In which plant structure does photosynthesis primarily occur?

Accepted Answer

A)  root
B)  stem
C)  leaf
D)  petiole
E)  barkF) B) and C)
G) C) and D)

Question 10

The substance that initially traps solar energy in photosynthesis is

Accepted Answer

A)  chlorophyll.
B)  RuBP.
C)  water.
D)  glucose.
E)  pyruvate.F) None of the above
G) B) and C)

Question 11

What are the products of the noncyclic electron pathway?

Accepted Answer

A)  H+,O2,ATP,and NADPH
B)  H+ and O2
C)  H+,ATP,and NADPH
D)  ATP and NADPH
E)  O2 and ATPF) A) and D)
G) B) and D)

Question 12

Which two organelles are most directly involved in the flow of energy from the sun through all living things?

Accepted Answer

A)  Golgi apparatus and mitochondria
B)  lysosomes and chloroplasts
C)  chloroplasts and mitochondria
D)  mitochondria and ribosomes
E)  ribosomes and Golgi apparatusF) B) and C)
G) All of the above

Question 13

Which of the following statements is true concerning sunlight radiation used for photosynthesis?

Accepted Answer

A)  All of the sunlight that hits the atmosphere is used for photosynthesis.
B)  Only the highest energy wavelengths are used for photosynthesis.
C)  All of the visible light is used for photosynthesis.
D)  Only the red,blue,and violet wavelengths of visible light are used for photosynthesis.
E)  Only the green visible light is used for photosynthesis.F) D) and E)
G) None of the above

Question 14

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.F) A) and B)
G) A) and C)

Question 15

The reason that deciduous leaves turn bright colors of red and yellow in the fall is

Accepted Answer

A)  chlorophyll is converted into bright carotenoid pigments.
B)  when chlorophyll breaks down,the remaining pigments other than green will show through.
C)  it is a chemical reaction involving the formation of ice crystals.
D)  bright pigments are shifted from the roots and stem to the leaves while sugars and chlorophyll are pumped down to the roots.
E)  a shift in the reflectance values of light is caused by the sun being lower in the sky; all leaf pigments actually remain the same.F) A) and B)
G) C) and E)

Question 16

In the Calvin cycle,the three-carbon molecule that will be immediately formed after carbon dioxide fixation occurs is

Accepted Answer

A)  PS I.
B)  glucose.
C)  3PG.
D)  G3P.
E)  RuBP.F) A) and B)
G) A) and C)

Question 17

NADPH and ATP are used in the

Accepted Answer

A)  noncyclic electron pathway.
B)  cyclic electron pathway.
C)  Calvin cycle reactions.
D)  citric acid cycle.
E)  light reactions.F) B) and E)
G) B) and D)

Question 18

What pathway moves the electrons from water through PS II to PS I and then on to NADP+?

Accepted Answer

A)  noncyclic electron pathway
B)  cyclic electron pathway
C)  CO2 fixation stage of Calvin cycle reactions
D)  citric acid cycle
E)  CO2 reduction phase of Calvin cycle reactionsF) C) and D)
G) A) and B)

Question 19

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.F) C) and D)
G) B) and D)

Question 20

There is an inverse relationship between wavelength of light and amount of energy.

Accepted Answer

A) True 
 B)False

Exam 8: Photosynthesis

There is an inverse relationship between wavelength of light and amount of energy.

Correct Answer
verified

What are the two sets of reactions for photosynthesis?

Correct Answer
verified

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

Correct Answer
verified

During photosynthesis,CO₂ is reduced.This means that

Correct Answer
verified

Which of the following statements is true concerning sunlight radiation used for photosynthesis?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Which of the following organisms do not have a dependence on photosynthesis for their energy?

Correct Answer
verified

The substance that initially traps solar energy in photosynthesis is

Correct Answer
verified

What are the products of the noncyclic electron pathway?

Correct Answer
verified

ATP synthase is an enzyme complex located in the thylakoid membranes.

Correct Answer
verified

What pathway moves the electrons from water through PS II to PS I and then on to NADP⁺?

Correct Answer
verified

The reason that deciduous leaves turn bright colors of red and yellow in the fall is

Correct Answer
verified

Correct Answer
verified

Which two organelles are most directly involved in the flow of energy from the sun through all living things?

Correct Answer
verified

Explain how CAM plants are adapted to a desert type of environment.

Correct Answer
verified
CAM plants separate components of the ph...
View Answer

NADPH and ATP are used in the

Correct Answer
verified

In which plant structure does photosynthesis primarily occur?

Correct Answer
verified

In the Calvin cycle,the three-carbon molecule that will be immediately formed after carbon dioxide fixation occurs is

Correct Answer
verified

Photosystem I comes before photosystem II in the noncyclic electron pathway.

Correct Answer
verified

Exam 8: Photosynthesis

There is an inverse relationship between wavelength of light and amount of energy.

Correct AnswerverifiedShow Answer

What are the two sets of reactions for photosynthesis?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

During photosynthesis,CO2 is reduced.This means that

Correct AnswerverifiedShow Answer

Which of the following statements is true concerning sunlight radiation used for photosynthesis?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following organisms do not have a dependence on photosynthesis for their energy?

Correct AnswerverifiedShow Answer

The substance that initially traps solar energy in photosynthesis is

Correct AnswerverifiedShow Answer

What are the products of the noncyclic electron pathway?

Correct AnswerverifiedShow Answer

ATP synthase is an enzyme complex located in the thylakoid membranes.

Correct AnswerverifiedShow Answer

What pathway moves the electrons from water through PS II to PS I and then on to NADP+?

Correct AnswerverifiedShow Answer

The reason that deciduous leaves turn bright colors of red and yellow in the fall is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which two organelles are most directly involved in the flow of energy from the sun through all living things?

Correct AnswerverifiedShow Answer

Explain how CAM plants are adapted to a desert type of environment.

Correct AnswerverifiedCAM plants separate components of the ph...View AnswerShow Answer

NADPH and ATP are used in the

Correct AnswerverifiedShow Answer

In which plant structure does photosynthesis primarily occur?

Correct AnswerverifiedShow Answer

In the Calvin cycle,the three-carbon molecule that will be immediately formed after carbon dioxide fixation occurs is

Correct AnswerverifiedShow Answer

Photosystem I comes before photosystem II in the noncyclic electron pathway.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

During photosynthesis,CO₂ is reduced.This means that

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What pathway moves the electrons from water through PS II to PS I and then on to NADP⁺?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
CAM plants separate components of the ph...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified