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Photosynthesis Review

Total questions: 113

Worksheet time: 2hrs 26mins

Name
Class
Date
1.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
2.
The stacks of disks in the chloroplast are called:
a)
Lamellae
b)
Grana
c)
Stroma
d)
Thylakoid
3.
The interior space of the chloroplast is called:
a)
Lamellae
b)
Grana
c)
Stroma
d)
Thylakoids
4.
Where does the light independent reaction take place?
a)
Matrix
b)
Stroma
c)
Thylakoid membrane
d)
Cytoplasm
5.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O2+ 6H2O → C6H12O6+ 6O2

b)

C6H12O6 + 6H2O→ 6O2+ 6O2

c)

6CO2+ 6H2O→ C6H12O6+ 6O2

d)

6O2 + 6H2O→ C6H12O6 + 6CO2

6.

The rate of photosynthesis can be influenced by...

a)

Temperature

b)

Carbon dioxide levels

c)

Light intensity

d)

Oxygen concentration

7.

Temperatures that are too high can slow photosynthesis because

a)

stomata stay open

b)

enzymes are ruined

c)

there is not enough CO2

d)

there is too much water

8.

•An enzyme that fixes carbon from atmosphere to convert it to complex macromolecule glucose.

a)

RuBP (Ribulose bisphosphate)

b)

RuBisCo (Ribulose Bisphosphate Carboxylase)

c)

PGA (3-Phosphoglycerate)

d)

G3P (Glyceraldeyhyde 3-Phosphate)

9.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
10.
Glucose is a ...
a)
sugar
b)
carbohydrate
c)
source of quick energy
d)
all are correct
11.

what are the inputs of the calvin cycle?

a)

NADPH

b)

ATP

c)

CO2

d)

H2O

e)

chlorophyll

12.

The organic molecule that is the cell's primary form of energy?

a)

Glucose

b)

ATP

c)

ADP

d)

GMP

13.
Which of the following is NOT a product of the light reactions?
a)
ATP
b)
NADPH
c)
Oxygen
d)
Glucose
14.

Choose the statement that best describes light reaction.

a)

It converts CO2 to sugar molecule

b)

It converts light energy to chemical energy of ATP and NADPH

c)

It takes place in the stroma

15.

The place where the light reactions happen in the chloroplast..

a)

Stroma

b)

Grana

c)

Inner Membrane

d)

Thylakoid

16.

Which of the following colors is not absorbed by chlorophyll pigments?

a)

green

b)

blue

c)

violet

17.

Autotrophs (producers) can perform photosynthesis because they have -

a)

Mitochondria

b)

Ribosomes

c)

A Nucleus

d)

Chloroplasts

18.
Leaves look green because.....
a)
they eat their vegetables
b)
to blend into their environment
c)
they contain a molecule named chlorophyll
d)
they are sick
19.

In the plants and CO2 experiment, why were the test tubes with no plants used in the experiment?

a)

To test for the presence of oxygen

b)

They were used as controls

c)

To see if plants could survive in BTB

d)

There is no purpose

20.

Do plants produce (release) CO2?

a)

Yes

b)

No

21.

Do plants use (take in) CO2?

a)

Yes

b)

No

22.

Do plants use (take in) O2?

a)

Yes

b)

No

23.

Do plants produce (release) O2?

a)

Yes

b)

No

24.

During a normal 24-hour period, when do plants do photosynthesis?

a)

Only when it is dark outside

b)

Only when it rains

c)

When it is light or dark outside

d)

Only when it is light outside

25.

During a normal 24-hour period, when do plants do cellular respiration?

a)

Only when it is dark outside

b)

Never

c)

When it is light or dark outside (all 24 hours)

d)

Only when it is light outside

26.

Where in the cell does cellular respiration take place?

a)

Golgi apparatus

b)

Ribosomes

c)

Mitochondria

d)

Chloroplasts

27.

Where in the cell does photosynthesis take place?

a)

Chloroplasts

b)

Ribosomes

c)

Mitochondria

d)

Golgi Apparatus

28.

During photosynthesis, energy ____________.

a)

levels remain constant during the reaction.

b)

is added to the reaction.

c)

is released from the reaction.

d)

is not involved in the reaction.

29.

During photosynthesis what energy is added to the reaction?

a)

ATP

b)

Kinetic

c)

Solar

d)

CO2

30.

During cellular respiration, energy ____________.

a)

is released in the form of ATP

b)

is released in the form of sunlight

c)

is added by sunlight

d)

remains at a constant level during the reaction

31.

What is the ultimate source of all types of energy found in living organisms on Earth?

a)

Glucose

b)

ATP

c)

Sunlight

d)

Food

32.

During a normal 24-hour period in a plant, the amount of CO2 produced by cellular respiration is _______ the amount of CO2 taken in by photosynthesis.

a)

the same as

b)

less than

c)

more than

33.

What is the overall effect that plants have on the environment when it comes to the concentration levels of CO2 and O2?

a)

CO2 increases and O2 decreases

b)

O2 increases and CO2 remains constant

c)

CO2 increases and O2 remains constant

d)

O2 increases and CO2 decreases

34.

Do plants and humans both use the same type of cellular respiration?

a)

Yes

b)

No

35.

The products of photosynthesis are the

a)

products of cellular respiration

b)

reactants of cellular respiration

c)

products of glycolysis

d)

reactants of fermentation

36.

If carbon dioxide is removed from a plant's environment, what would you expect to happen to its production of sugar (glucose)?

a)

More sugars would be produced

b)

No sugars would be produced

c)

The same number of sugars would be produced, but without carbon dioxide

d)

Carbon dioxide does not affect the production of sugars in plants

37.

An acorn that weighs one or two ounces can grow into an oak tree weighing as much as 3 to 4 tons! Where does all of that matter come from?

a)

Mostly from the carbon dioxide found in the air

b)

Mostly from the oxygen found in the air

c)

Mostly from the water absorbed by the roots of the tree

d)

Mostly from the nutrients found in the soil

38.

What is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen?

a)

Respiration

b)

Chlorophyll

c)

Photosynthesis

d)

Mitochondria

39.

A simple sugar produced by plants during photosynthesis that serves as a source of energy.

a)

Respiration

b)

Chlorophyll

c)

Photosynthesis

d)

Glucose

40.

Which pigment found in plant cells absorbs sunlight during photosynthesis?

a)

Chlorophyll

b)

Stomata

c)

Glucose

d)

ATP

41.

What gas is produced by plants during photosynthesis that is essential for the survival of animals?

a)

Carbon dioxide

b)

Oxygen

c)

Glucose

d)

Sunlight

42.

Where does photosynthesis take place in plant cells?

a)

Chloroplast

b)

Mitochondria

c)

Stomata

d)

Chlorophyll

43.

What do we call an organism that obtains food by consuming other organisms, such as animals?

a)

Respiration

b)

Photosynthesis

c)

Autotroph

d)

Heterotroph

44.

The process by which living organisms release energy from glucose molecules, often using oxygen.

a)

Glucose

b)

Respiration

c)

Pigment

d)

Mitochondria

45.

What is the gas produced by animals and used by plants during photosynthesis?

a)

Carbon dioxide

b)

Stomata

c)

Glucose

d)

ATP

46.

What is the name of the organelle found in cells where cellular respiration and energy production occur?

a)

Chloroplast

b)

Mitochondria

c)

Stomata

d)

Chlorophyll

47.

The _____ is a tiny opening on the surface of plant leaves that allows for the exchange of gases during photosynthesis.

a)

Carbon dioxide

b)

Oxygen

c)

Glucose

d)

Stomata

48.

What is the molecule that is the source of energy for use and storage at the cellular level?

a)

Respiration

b)

Photosynthesis

c)

Chlorophyll

d)

ATP - adenosine triphosphate

49.

A class of carbohydrates, such as glucose, that serve as an important energy source for living?

a)

Sugar

b)

Photosynthesis

c)

Chlorophyll

d)

ATP - adenosine triphosphate

50.

An organism that can produce its own food through photosynthesis, such as plants.

a)

Heterotroph

b)

Photosynthesis

c)

Autotroph

d)

ATP

51.

The electromagnetic radiation emitted by the sun, which is necessary for photosynthesis to occur.

a)

Heterotroph

b)

Photosynthesis

c)

Autotroph

d)

Sunlight

52.

The Calvin Cycle takes place in the:

a)

Stroma

b)

Thylakoid

c)

Grana

d)

Stomata

53.
The molecule that comes out of the Calvin Cycle to produce glucose, and polymers like cellulose is:
a)
RuBP
b)
GP3
c)
3-PG
d)
G3P
54.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
55.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

56.

Tiny pores on the underside of leaves

a)

Stroma

b)

Stomata

c)

Thylakoids

d)

Chloroplasts

57.

Plants can close their stomata when the temperature is hot

a)

To prevent water loss

b)

To prevent loss of oxygen

c)

To prevent loss of carbon dioxide

d)

To bring in more carbon dioxide

58.

Which of the following is a way to increase the rate of photosynthesis?

a)

Increase oxygen levels

b)

Decrease CO2 levels

c)

Increase light intensity

d)

Decrease water level

59.

Which of the following is true of the Light Reactions?

a)

carbon dioxide and energy (ATP and NADPH) are used to make organic compounds

b)

energy is absorbed from sunlight and converted to chemical energy stored in ATP and NADPH

c)

Occurs in the stroma

d)

Occurs in the cytoplasm

60.

Rate of photosynthesis ________ as light intensity _________

a)

increases, increases

b)

decreases, increases

c)

increases, decreases

61.

Which of the following is true of the Calvin Cycle?

a)

carbon dioxide and energy (ATP and NADPH) are used to make organic compounds

b)

energy is absorbed from sunlight and converted to chemical energy stored in ATP and NADPH

c)

Occurs in the thylakoid

d)

Occurs in the cytoplasm

62.

Increasing carbon dioxide can increase photosynthesis, but only to a maximum rate because

a)

There are not enough RuBP molecules

b)

Oxygen cannot leave fast enough

c)

Large amounts of CO2 cannot fit in the chloroplast

d)

Calvin cycle can only go as fast as the light reactions

63.

In order to efficiently create 1 glucose molecule, the Calvin Cycle must occur how many times?

a)

3

b)

6

c)

1

d)

12

64.

The CO2 used in the Calvin Cycle originates from ___________.

a)

The light phase

b)

The breakdown of the remaining G3P's

c)

Diffusion through the stoma

d)

Lumen of the Thylakoid

65.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
66.

What is the main product of the Calvin Cycle?

a)

Stroma

b)

Thylakoids

c)

Glucose

d)

Water

67.

What happens to NADPH and ATP after they are used in the Calvin Cycle?

a)

they recycle back to the light reactions

b)

they are used to make G3P

68.

Which of the following is NOT a reactant of the Calvin Cycle?

a)

NADPH

b)

ATP

c)

Oxygen

d)

Carbon dioxide

69.

The two main stages of photosynthesis are the

a)

light reactions and respiration

b)

dark reactions and the Calvin cycle

c)

light reactions and the Calvin cycle

d)

dark reactions and fermentation

70.

What molecule absorbs sunlight for photosynthesis?

a)

chloroplast

b)

thylakoid

c)

grana

d)

chlorophyll

71.

What are the products of photosynthesis?

a)

water and carbon dioxide

b)

oxygen and glucose

c)

oxygen and carbon dioxide

d)

oxygen and water

72.

Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis?

a)

The light-dependent stage

b)

The light-independent stage (The Calvin Cycle)

c)

The electron transport chain

d)

ATP formation

73.
What is the function of NADPH and ATP?
a)
They absorb light
b)
They power the light-dependent reactions
c)
They are light-reflecting pigments
d)
They are short term energy carriers
74.

After photosynthesis, plants store their energy as _________ .

a)

chlorophyll

b)

pigment

c)

glucose (sugar)

d)

Oxygen

75.

Why are plants considered autotrophs

a)

They make their own food

b)

They provide food for others

76.

What two forms of energy are produced from the light-dependent reaction?

a)

Energy and water

b)

ATP and ADP

c)

ATP and NADPH

d)

NADP and NADPH

77.

Which of the following is NOT a product of the light reactions?

a)

Oxygen

b)

NADPH

c)

ATP

d)

Glucose (Sugar)

78.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
79.
What is the main purpose of the light dependent reactions?
a)
To provide the energy for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
80.

What part of the plant cell performs photosynthesis?

a)

The Mitochondrion

b)

The Nucleus

c)

The Chloroplast

d)

The Cell Wall

81.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
82.
What gas does the process of photosynthesis release into the atmosphere?
a)
oxygen
b)
carbon dioxide
c)
water
d)
nitrogen
83.
Thylakoids are arranged in stacks called ____.
a)
Lamellae
b)
Stroma
c)
Granum
d)
Glucose
84.
The gel-like material that surrounds the grana is called ____
a)
lamellae
b)
granum
c)
thylakoid
d)
stroma
85.

Autotrophs (producers) can perform photosynthesis because they have -

a)

Mitochondria

b)

Ribosomes

c)

A Nucleus

d)

Chloroplasts

86.
The principal chemical compound that living things use to store energy is
a)
DNA
b)
ATP
c)
H2O
d)
CO2
87.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
88.
In the ________________________, energy from the sun is used to make ATP 
a)
light-independent reaction
b)
dark reaction
c)
light-dependent reaction
d)
Calvin cycle
89.
Leaves look green because.....
a)
they eat their vegetables
b)
to blend into their environment
c)
they contain a molecule named chlorophyll
d)
they are sick
90.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O2+ 6H2O → C6H12O6+ 6O2

b)

C6H12O6 + 6H2O→ 6O2+ 6O2

c)

6CO2+ 6H2O→ C6H12O6+ 6O2

d)

6O2 + 6H2O→ C6H12O6 + 6CO2

91.

Sunlight is used during photosynthesis to-

a)

Break down the xylem

b)

Break down the stomata

c)

Break down the water

d)

Capture the water

92.

Choose the statement that best describes light reaction.

a)

It converts CO2 to sugar molecule

b)

It converts light energy to chemical energy of ATP and NADPH

c)

It takes place in the stroma

93.

Which of the following is not needed to start the light reaction

a)

H2O

b)

ADP + P

c)

CO2

94.

What is the waste-product of light-dependent reaction?

a)

oxygen

b)

water

c)

carbon dioxide

95.

Chloroplast is...

a)

A plant cell

b)

Organelle that is responsible for photosynthesis

c)

The green pigmentation in plants

d)

The hard outer casing of a plant cell

96.

What is the primary purpose of photosynthesis in plants?

a)

To produce carbon dioxide

b)

To produce glucose and oxygen

c)

To absorb nutrients from the soil

d)

To generate heat

97.

Which of these are limiting factors for photosynthesis? Choose 3 answers.

a)

Light intensity

b)

CO2 concentration

c)

Temperature

d)

Light

e)

CO2 levels

98.

Which statement best summarizes how the light-dependent reactions and light-independent reactions (Calvin cycle) work together during photosynthesis?

a)

The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make ATP

b)

The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make energy in the form of sunlight

c)

The light-dependent reactions capture energy and the light-independent reactions use that energy to make glucose

d)

The light-dependent reactions capture energy and the light-independent reactions use that energy to make ATP

99.

What outputs are made during the Light-Dependent reaction that then move into and become inputs of the Light-Independent reaction (Calvin cycle)? Hint: What gets made during the first step of photosynthesis and then moves into the second step?

a)

H2O & CO2

b)

ATP & NADPH

c)

ATP & H2O

d)

CO2 & NADPH

100.

Photosynthesis and Cellular Respiration are very similar reactions and in many ways are opposite reactions. What products of photosynthesis are need as reactants for cellular respiration?

a)

Glucose and Oxygen

b)

Glucose and Carbon Dioxide

c)

Oxygen and Water

d)

ATP and Sunlight

101.

If a students runs an experiment where they grow plants with more or less carbon dioxide in the environment, which would you expect to happen?

a)

Plants grown with less CO2 grow faster and larger

b)

Plants grown with more CO2 grow faster and larger

c)

Plants grown with less CO2 do not grow at all

d)

Plants grown with more CO2 grow slower and smaller

102.

What is the role of chlorophyll in photosynthesis?

a)

It absorbs sunlight and uses its energy to synthesise carbohydrates from CO2 and water.

b)

It releases oxygen during the process of photosynthesis.

c)

It helps in the absorption of carbon dioxide from the atmosphere.

d)

It helps in the absorption of water from the soil.

103.

What happens to the oxygen produced during photosynthesis?

a)

It is used by the plant for respiration.

b)

It is released into the atmosphere.

c)

It is used to produce ATP.

d)

It is stored in the plant for later use.

104.

Diatoms are one of the most common types of phytoplankton in marine habitats. Like plants, diatoms contain chlorophyll and produce glucose from which of the following?

a)

Oxygen and ATP

b)

Carbon dioxide and water

c)

ATP and water

d)

Carbon monoxide and oxygen

105.
Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle?
a)
CO2 and glucose
b)
ATP and NADPH
c)
ADP, P and NADP+
d)
H2Oand O2
106.
Which of the following processes is most directly driven by light energy?
a)
carbon fixation in stroma
b)
reduction of NADP molecules
c)
ATP Synthesis
d)
removal of electrons from membrane-bound chlorophyll molecules
107.
The light reactions occur in the ________ and the dark reactions take place in the ________.
a)
Chloroplast / thylakoid membrane
b)
stroma / thylakoid
c)
mesophyl / stomata
d)
thylakoid membrane / stroma
108.
What is the primary function of the Calvin cycle?
a)
regenerate ATP for use in the light reactions of photosynthesis
b)
produce carbon dioxide for use in the light reactions of photosynthesis
c)
produce oxygen by oxidizing water
d)
produce simple sugars from carbon dioxide
109.

Rubisco is important in which step of photosynthesis

a)

energizing the electrons in chlorophyll

b)

carbon fixation when CO2 is connected to RUBP during calvin cycle

c)

regeneration phase as RUBP is made during calvin cycle

d)

reduction of the carbon chain during the calvin cycle

110.

If the proton (H+) pump in the thylakoid was not working which molecule could not be made during the light reaction?

a)

NADPH

b)

ATP

c)

Water

d)

Oxygen gas

111.

ATP is made during the light reaction using all of the following EXCEPT

a)

proton pump

b)

hydrogen ion gradient

c)

electron energy from photosystem II

d)

NADPH donating electrons

112.

Rubisco is important in which step of photosynthesis

a)

energizing the electrons in chlorophyll

b)

carbon fixation when CO2 is connected to RUBP during calvin cycle

c)

regeneration phase as RUBP is made during calvin cycle

d)

reduction of the carbon chain during the calvin cycle

113.

Which step of photosynthesis stores high energy electrons as NADPH?

a)

Calvin Cycle

b)

Glycolysis

c)

Krebs Cycle

d)

Light Reactions

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