Question 1

The reason that deciduous leaves turn bright colors in the fall is

Accepted Answer

A)  chlorophyll is converted into bright carotenoid pigments. 
B)  when chlorophyll breaks down, the remaining pigments become visible. 
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. 
A)  chlorophyll is converted into bright carotenoid pigments. 
B)  when chlorophyll breaks down, the remaining pigments become visible. 
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. B

Question 2

Biologists are fairly certain that oxygen was built up in the atmosphere by the development of photosynthesis. The production of oxygen and, therefore, the beginning of extensive aerobic life was made possible by the evolution of

Accepted Answer

A)  fermentation. 
B)  photosystem I. 
C)  photosystem II. 
D)  glycolysis. 
E)  the nucleus. 
A)  fermentation. 
B)  photosystem I. 
C)  photosystem II. 
D)  glycolysis. 
E)  the nucleus. C

Question 3

Which coenzyme is involved in the light reactions?

Accepted Answer

A)  NAD+ 
B)  FAD 
C)  NADP+ 
D)  both NAD+ and FAD 
E)  both FAD and NADP+ 
A)  NAD+ 
B)  FAD 
C)  NADP+ 
D)  both NAD+ and FAD 
E)  both FAD and NADP+ C

Question 4

At the base of most food chains are autotrophs.

Accepted Answer

A) True 
 B)False

Question 5

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

Question 6

The main function of stomata is to

Accepted Answer

A)  expose the chlorophyll to sunlight. 
B)  transport water to the chlorophyll. 
C)  allow passage of CO2 and O2 into the leaf. 
D)  store glucose. 
E)  store pyruvate and provide the site of the Calvin cycle. 
A)  expose the chlorophyll to sunlight. 
B)  transport water to the chlorophyll. 
C)  allow passage of CO2 and O2 into the leaf. 
D)  store glucose. 
E)  store pyruvate and provide the site of the Calvin cycle.

Question 7

What are the products of photosynthesis?

Accepted Answer

A)  water and carbon dioxide 
B)  water and oxygen 
C)  carbohydrate and water 
D)  oxygen and carbohydrate 
E)  carbon dioxide and carbohydrate 
A)  water and carbon dioxide 
B)  water and oxygen 
C)  carbohydrate and water 
D)  oxygen and carbohydrate 
E)  carbon dioxide and carbohydrate

Question 8

Which of these is most closely associated with the process of electron transport?

Accepted Answer

A)  a sequence of molecules 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)  a sequence of molecules 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 9

Which of the following is an autotroph?

Accepted Answer

A)  yeast 
B)  turtle 
C)  fish 
D)  algae 
E)  hawk 
A)  yeast 
B)  turtle 
C)  fish 
D)  algae 
E)  hawk

Question 10

In what ways are photosynthesis and cellular respiration different?

Accepted Answer

A)  Both will use the electron carrier NADH. 
B)  Both require ATP. 
C)  Both require a membrane. 
D)  Both require a cyclical enzymatic pathway. 
E)  Both require an electron transport chain. 
A)  Both will use the electron carrier NADH. 
B)  Both require ATP. 
C)  Both require a membrane. 
D)  Both require a cyclical enzymatic pathway. 
E)  Both require an electron transport chain.

Question 11

Which photosynthetic mode would be most favorable in a desert environment?

Accepted Answer

A)  CAM 
B)  C3 
C)  C4 
D)  both CAM and C3 
E)  CAM, C3, and C4 
A)  CAM 
B)  C3 
C)  C4 
D)  both CAM and C3 
E)  CAM, C3, and C4

Question 12

The "antenna" system of a plant that gathers the solar energy consists of the

Accepted Answer

A)  grana. 
B)  epidermal cells of the leaf. 
C)  pigment complex. 
D)  ATP synthase complex. 
E)  hydrogen ions (H+). 
A)  grana. 
B)  epidermal cells of the leaf. 
C)  pigment complex. 
D)  ATP synthase complex. 
E)  hydrogen ions (H+).

Question 13

Which of the following will recycle electrons back to photosystem I?

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 reactions 
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 reactions

Question 14

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. 
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.

Question 15

Only organisms with chloroplasts are capable of photosynthesis.

Accepted Answer

A) True 
 B)False

Question 16

Which molecule would you need to radioactively label in order to produce radioactive oxygen during photosynthesis?

Accepted Answer

A)  carbon dioxide 
B)  water 
C)  cytochrome 
D)  glucose 
E)  G3P 
A)  carbon dioxide 
B)  water 
C)  cytochrome 
D)  glucose 
E)  G3P

Question 17

We set up an experiment where the same species of plant is grown in boxes covered with plastic that only allows a single color of light through. In which box would we expect the least plant growth and even perhaps the death of the plant to occur?

Accepted Answer

A)  white 
B)  blue 
C)  red 
D)  green 
E)  indigo 
A)  white 
B)  blue 
C)  red 
D)  green 
E)  indigo

Question 18

The red maple tree cannot photosynthesize because it is not green.

Accepted Answer

A) True 
 B)False

Question 19

The end product of the Calvin cycle is

Accepted Answer

A)  PS I. 
B)  RuBP carboxylase. 
C)  3PG. 
D)  G3P. 
E)  RuBP. 
A)  PS I. 
B)  RuBP carboxylase. 
C)  3PG. 
D)  G3P. 
E)  RuBP.

Question 20

Write the overall chemical equation for photosynthesis and cellular respiration.

Accepted Answer

Energy + 6

Exam 8: Photosynthesis

The reason that deciduous leaves turn bright colors in the fall is

Biologists are fairly certain that oxygen was built up in the atmosphere by the development of photosynthesis. The production of oxygen and, therefore, the beginning of extensive aerobic life was made possible by the evolution of

Which coenzyme is involved in the light reactions?

At the base of most food chains are autotrophs.

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

The main function of stomata is to

What are the products of photosynthesis?

Which of these is most closely associated with the process of electron transport?

Which of the following is an autotroph?

In what ways are photosynthesis and cellular respiration different?

Which photosynthetic mode would be most favorable in a desert environment?

The "antenna" system of a plant that gathers the solar energy consists of the

Which of the following will recycle electrons back to photosystem I?

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

Only organisms with chloroplasts are capable of photosynthesis.

Which molecule would you need to radioactively label in order to produce radioactive oxygen during photosynthesis?

We set up an experiment where the same species of plant is grown in boxes covered with plastic that only allows a single color of light through. In which box would we expect the least plant growth and even perhaps the death of the plant to occur?

The red maple tree cannot photosynthesize because it is not green.

The end product of the Calvin cycle is

Write the overall chemical equation for photosynthesis and cellular respiration.

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