Question 1

Grana,thylakoids and chloroplasts are structures in cells that are important to the process of photosynthesis.

Accepted Answer

A) True 
 B)False

Question 2

The rise of photosynthetic organisms:

Accepted Answer

A)  raised the concentration of carbon dioxide in the atmosphere lowering sea levels.
B)  decreased the concentration of carbon dioxide in the atmosphere lowering sea levels.
C)  decreased the concentration of carbon dioxide in the atmosphere raising sea levels.
D)  raised the concentration of carbon dioxide in the atmosphere raising sea levels.E) C) and D)
F) B) and D) B

Question 3

What is a product of photosystem II?

Accepted Answer

A)  NADPH
B)  Water
C)  Oxygen
D)  ADP
E)  GlucoseF) All of the above
G) B) and D) C

Question 4

Burning a log is the reverse reaction found in photosynthesis.What products would be formed in burning a log?

Accepted Answer

A)  Carbon dioxide and water
B)  Glucose and oxygen
C)  Oxygen and carbon dioxide
D)  Oxygen and water
E)  Carbon dioxide and glucoseF) A) and D)
G) A) and C) A

Question 5

Plants require a lot of water for transpiration,metabolism,and photosynthesis.How is water used in photosynthesis?

Accepted Answer

A)  As a substrate for ATP synthase
B)  As an electron acceptor
C)  To combine with ADP forming ATP
D)  To combine with NADP+ to form NADPH
E)  As an electron donorF) A) and C)
G) B) and D)

Question 6

Most biologists would agree that the most important metabolic pathway of living organisms is photosynthesis.

Accepted Answer

A) True 
 B)False

Question 7

Why is photorespiration more of a problem for a plant when their stomata are closed?

Accepted Answer

A)  Oxygen levels increase from photosynthesis and compete with carbon dioxide for rubisco's active site.
B)  Carbon dioxide levels increase from photosynthesis and compete with oxygen for rubisco's active site.
C)  Water is lost when the stomata are open and is not available to accept electrons from Photosystem I.
D)  Oxygen cannot enter the leaf, blocking normal respiration, so the plants switch to photorespiration.
E)  Glucose cannot leave through the stomata and levels increase inside of the plant cell, causing dehydration by osmosis.F) A) and D)
G) A) and C)

Question 8

The rise of photosynthetic organisms increased the concentration of CO2 in the atmosphere,raised global temperature and raised sea level.

Accepted Answer

A) True 
 B)False

Question 9

The sea slug Elysia chlorotica is green because it contains:

Accepted Answer

A)  enzymes that produce green light.
B)  heme.
C)  algal chromosomes.
D)  pigments that reflect red and blue light.
E)  chlorophyll.F) B) and E)
G) B) and D)

Question 10

The reactions of photosynthesis may be summarized as:

Accepted Answer

A)  6CO2 + 6H2O 2 + 6H2O   C6H12O6 + 6O2 
B)  6CO + 6H2O   C6H12O6 + 6H2O 
C)  12CO2 + 6H2O   C12H12O6 + 6H2O 
D)  6CO + 6H2O   C6H12O­6 + 6O2 
E)  none are correct" class="answers-bank-image d-inline" rel="preload" > C6H12O6 + 6O2
B)  6CO + 6H2O 2 + 6H2O   C6H12O6 + 6O2 
B)  6CO + 6H2O   C6H12O6 + 6H2O 
C)  12CO2 + 6H2O   C12H12O6 + 6H2O 
D)  6CO + 6H2O   C6H12O­6 + 6O2 
E)  none are correct" class="answers-bank-image d-inline" rel="preload" > C6H12O6 + 6H2O
C)  12CO2 + 6H2O 2 + 6H2O   C6H12O6 + 6O2 
B)  6CO + 6H2O   C6H12O6 + 6H2O 
C)  12CO2 + 6H2O   C12H12O6 + 6H2O 
D)  6CO + 6H2O   C6H12O­6 + 6O2 
E)  none are correct" class="answers-bank-image d-inline" rel="preload" > C12H12O6 + 6H2O
D)  6CO + 6H2O 2 + 6H2O   C6H12O6 + 6O2 
B)  6CO + 6H2O   C6H12O6 + 6H2O 
C)  12CO2 + 6H2O   C12H12O6 + 6H2O 
D)  6CO + 6H2O   C6H12O­6 + 6O2 
E)  none are correct" class="answers-bank-image d-inline" rel="preload" > C6H12O­6 + 6O2
E)  none are correctF) B) and E)
G) A) and E)

Question 11

Based on the structure of chlorophyll (Figure 5.6) where would you expect to find it in a cell?

Accepted Answer

A)  In the cell wall
B)  In the cytoplasm
C)  In a membrane
D)  In the stroma
E)  Attached to a proteinF) B) and E)
G) A) and B)

Question 12

The energy source for the process of photosynthesis is:

Accepted Answer

A)  oxygen.
B)  sunlight.
C)  carbon dioxide.
D)  chlorophyll.
E)  glucose.F) A) and C)
G) B) and E)

Question 13

A gelatinous matrix inside the chloroplast containing ribosomes,DNA and enzymes is the:

Accepted Answer

A)  granum.
B)  chlorophyll.
C)  thylakoid.
D)  stroma.
E)  mitochondria.F) A) and C)
G) A) and E)

Question 14

The light reactions use sunlight as their energy source.

Accepted Answer

A) True 
 B)False

Question 15

Which plants keep their stomata open only at night?

Accepted Answer

A)  CAM
B)  C3
C)  C4D) A) and B)
E) A) and C)

Question 16

Organisms that consume preexisting organic molecules are called:

Accepted Answer

A)  heterotrophs.
B)  autotrophs.
C)  animorphs.
D)  plants.
E)  none are correctF) None of the above
G) C) and D)

Question 17

Tiny openings in the epidermis of the leaf that allow air to enter into the leaf are called:

Accepted Answer

A)  thylakoids.
B)  stroma.
C)  stomata.
D)  grana.
E)  thylakoid spaces.F) A) and E)
G) C) and D)

Question 18

Photosystem I produces:

Accepted Answer

A)  NADPH.
B)  ATP.
C)  glucose.
D)  water.
E)  NADH.F) B) and E)
G) C) and E)

Question 19

The organelle that carries out photosynthesis in plants is the:

Accepted Answer

A)  chloroplast.
B)  mitochondria.
C)  ribosome.
D)  chlorophyll.
E)  lysosome.F) B) and D)
G) B) and C)

Question 20

Which plants are best adapted to cool wet conditions?

Accepted Answer

A)  C4
B)  C3
C)  CAMD) All of the above
E) A) and B)

Exam 5: Photosynthesis

Grana,thylakoids and chloroplasts are structures in cells that are important to the process of photosynthesis.

Correct AnswerverifiedShow Answer

The rise of photosynthetic organisms:

Correct AnswerverifiedB

What is a product of photosystem II?

Correct AnswerverifiedC

Burning a log is the reverse reaction found in photosynthesis.What products would be formed in burning a log?

Correct AnswerverifiedA

Plants require a lot of water for transpiration,metabolism,and photosynthesis.How is water used in photosynthesis?

Correct AnswerverifiedShow Answer

Most biologists would agree that the most important metabolic pathway of living organisms is photosynthesis.

Correct AnswerverifiedShow Answer

Why is photorespiration more of a problem for a plant when their stomata are closed?

Correct AnswerverifiedShow Answer

The rise of photosynthetic organisms increased the concentration of CO2 in the atmosphere,raised global temperature and raised sea level.

Correct AnswerverifiedShow Answer

The sea slug Elysia chlorotica is green because it contains:

Correct AnswerverifiedShow Answer

The reactions of photosynthesis may be summarized as:

Correct AnswerverifiedShow Answer

Based on the structure of chlorophyll (Figure 5.6) where would you expect to find it in a cell?

Correct AnswerverifiedShow Answer

The energy source for the process of photosynthesis is:

Correct AnswerverifiedShow Answer

A gelatinous matrix inside the chloroplast containing ribosomes,DNA and enzymes is the:

Correct AnswerverifiedShow Answer

The light reactions use sunlight as their energy source.

Correct AnswerverifiedShow Answer

Which plants keep their stomata open only at night?

Correct AnswerverifiedShow Answer

Organisms that consume preexisting organic molecules are called:

Correct AnswerverifiedShow Answer

Tiny openings in the epidermis of the leaf that allow air to enter into the leaf are called:

Correct AnswerverifiedShow Answer

Photosystem I produces:

Correct AnswerverifiedShow Answer

The organelle that carries out photosynthesis in plants is the:

Correct AnswerverifiedShow Answer

Which plants are best adapted to cool wet conditions?

Correct AnswerverifiedShow Answer

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B

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C

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A

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The rise of photosynthetic organisms increased the concentration of CO₂ in the atmosphere,raised global temperature and raised sea level.

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