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Photosynthesis

Total questions: 128

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

Which organelle performs photosynthesis?

a)

Chloroplast

b)

Mitochondria

c)

Nucleus

d)

Endoplasmic reticulum

2.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
3.

What process occurs when light energy is captured in autotrophs and converted into sugar?

a)

Photosynthesis

b)

Cellular respiration

c)

Anaerobic respiration

d)

Carbon fixation

4.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
5.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
6.

Which molecules from the light-dependent reactions are used to power the Calvin Cycle?

a)

ADP and H2O

b)

oxygen and glucose

c)

NADPH and ATP

d)

light and carbon dioxide

7.

Plants need ________ as the source of inorganic carbon in the Calvin Cycle (or the light-independent reactions).

a)

oxygen

b)

soil

c)

carbon dioxide

d)

sugar

8.

Chloroplasts are...

a)

Structures of animal cells to produce ATP

b)

Organelles where lipids are elaborated

c)

Specialized structures of plants where sugar is made

d)

Waste organelle of plants

9.

Oxygen gas is released as a byproduct after

a)

Carbon fixation occurs in the Calvin Cycle.

b)

Water is split into H+ and O2 gas after water donates electrons to the ETC.

c)

NADP+ is reduced to NADPH at the end of the light-dependent reactions.

d)

ATP is used to power the Calvin Cycle.

10.

Where do the light-dependent reactions occur within a plant cell?

a)

The membranes of the thylakoid

b)

The stomata of the leaves

c)

The cytoplasm of the plant cellt

d)

The stroma of the chloroplast

11.
What is produced as a result of photosynthesis?
a)
Glucose and Chlorophyll
b)
Glucose and Oxygen
c)
Water and Light energy
d)
Carbon dioxide and Water
12.
Which of the following is not needed for photosynthesis to occur?
a)
sunlight
b)
carbon dioxide
c)
water
d)
oxygen
13.

A stack of thylakoids is called

a)

A stroma

b)

A granum

c)

A matrix

d)

ATP synthase

14.

Which of the following statements about the light-dependent reactions is FALSE?

a)

Water donates electrons to the electron transport chain.

b)

They produce NADPH to power the Calvin cycle.

c)

They produce ATP to power the Calvin cycle.

d)

They occur in the stroma of the chloroplast.

15.

During this reaction, glucose and other carbohydrates are produced.

a)

In the light-dependent reactions

b)

In the Krebs cycle

c)

In the Calvin Cycle

16.

The movement of H+ ions down their concentration gradient powers this enzyme to make ATP during the light-dependent reactions.

a)

Photosystem I

b)

ATP synthase

c)

Photosystem II

d)

RuBP

17.

________ donates electrons in the electron transport chain in the light-dependent reactions and _______ energizes those electrons.

a)

Water, light

b)

NADH, oxygen

c)

Water, ATP

d)

FADH2, light

18.

________ removes electrons from the electron transport chain in photosynthesis and becomes _________.

a)

NADP+, ATP

b)

Oxygen gas, water

c)

ADP, ATP

d)

NADP+, NADPH

19.

ATP is synthesized at ATP synthase. This synthesis is driven by

a)

The movement of H+ ions from low to high.

b)

The movement of H+ ions from high to low.

c)

Attaching ADP to a free H+ ion.

d)

Synthesizing glucose.

20.

Chlorophyll in most plant leaves does not absorb this color; it reflects it.

a)

Purple

b)

Blue

c)

Green

d)

Red

21.
The reactants of photosynthesis are
a)
sugar and water.
b)
sugar and oxygen.
c)
carbon dioxide and water.
d)
carbon dioxide and oxygen.
22.
What are the products of photosynthesis?
a)
Carbon dioxide and water
b)
Carbon dioxide and oxygen
c)
Glucose and oxygen
d)
Glucose and water
23.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
6CO2 + 6H2O --> 6O2 + C6H12O6
b)
6CO2 + C6H12O6 + 6H2O --> O2 
c)
6O2 + 6H2O --> 6CO2 + C6H12O6
d)
C6H12O6 + 6O2 ---> 6H2O + 6CO2 
24.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
25.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
26.

Where is ATP synthesized?

a)

light reaction

b)

light independent reaction

c)

chlorophyll

d)

Calvin cycle

27.

The Calvin cycle takes place in?

a)

stroma

b)

thylakoids

c)

photosystems

d)

chlorophyll molecules

28.

The light dependent reactions take place where?

a)

in the thylakoid membranes

b)

stroma

c)

outside the chloroplast

d)

mitochondria

29.
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
30.

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

a)

NADP+

b)

NADPH

c)

ADP

d)

G3P (to form glucose)

31.

Which gas is removed from the atmosphere during photosynthesis?

a)

hydrogen

b)

nitrogen

c)

oxygen

d)

carbon dioxide

32.

Which molecules from the light-dependent reactions are used to power the Calvin cycle?

a)

ADP and H2O

b)

NADPH and ATP

c)

oxygen and glucose

d)

light and carbon dioxide

33.

Oxygen gas is released as a byproduct after

a)

carbon fixation occurs in the Calvin cycle.

b)

NADP+ is reduced to NADPH at the end of the light-dependent reactions.

c)

water is split into H+ and O2 gas after water donates electrons to the ETC.

d)

ATP is used to power the Calvin cycle.

34.

Where do the light-dependent reactions occur within a plant cell?

a)

the membranes of the thylakoid

b)

the cytoplasm of the plant cell

c)

the stomata of the leaves

d)

the stroma of the chloroplast

35.

Carbon fixation occurs

a)

in the light-dependent reactions

b)

in the Calvin cycle

c)

in the Krebs cycle

36.

The movement of H+ ions down their concentration gradient powers this enzyme to make ATP during the light-dependent reaction.

a)

Photosystem I

b)

ATP synthase

c)

Photosystem II

d)

RuBP

37.

________ donates electrons in the electron transport chain in the light-dependent reactions and _______ energizes those electrons.

a)

water : light

b)

water : ATP

c)

NADP : oxygen

d)

FADH2 : light

38.

ATP is synthesized at ATP synthase. This synthesis is driven by

a)

the movement of H+ ions from low to high.

b)

attaching ADP to a free H+ ion.

c)

the movement of H+ ions from high to low.

d)

synthesizing glucose.

39.

Which of the following describes the pathway of electrons in the light reactions?

a)

O2 -> PS II -> PS I -> NADH

b)

O2 -> PS II -> PS I -> NADPH

c)

O2 -> PS I -> PS II -> NADPH

d)

O2 -> PS I -> PS II -> NADH

40.

Which of the following is NOT a part of photosynthesis?

a)

Calvin cycle

b)

Light reactions

c)

Light independent reactions

d)

Krebs cycle

41.

Where do the light reactions take place?

a)

cytosol

b)

thylakoid membrane

c)

stroma

d)

mitochondrial matrix

42.

What is the input for the light reactions?

a)

light energy

b)

ATP

c)

NADPH

d)

H2O

43.

What is the output for the light reactions?

a)

light energy

b)

ATP

c)

NADPH

d)

H2O

44.

Where does the Calvin cycle take place?

a)

cytosol

b)

thylakoid membrane

c)

stroma

d)

mitochondrial matrix

45.

What is the input for the Calvin cycle?

a)

CO2

b)

H2O

c)

NADPH

d)

ATP

e)

G3P

46.

What is the output for the Calvin cycle?

a)

CO2

b)

H2O

c)

NADPH

d)

ATP

e)

G3P

47.

What does ATP synthase do?

a)

Create ATP

b)

Break down ATP through chemiosmosis.

c)

Break down NADPH.

d)

Create NADPH.

48.

H+ ions move into the thylakoid due to the

a)

concentration gradient in the stroma

b)

Brownian motion of the protons.

c)

peer pressure of the cool electrons in the stroma.

d)

movement of electrons through the electron transport chain

49.
Which of the following is NOT a product of the light reactions?
a)
ATP
b)
NADPH
c)
Oxygen
d)
Glucose
50.
What is the purpose of splitting water in PS2 of the light dependent reaction?
a)
Provides e- for PS2 and H+ for the thylakoid space
b)
To produce Oxygen for animals
c)
There is no purpose
51.
It is important to create a concentration of H+  in the thylakoid space so that the H+ can diffuse through_________ to create ______.
a)
ATP synthase, ATP
b)
NADH, NADPH
c)
proton pump, protons
52.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
53.
Where are photosystems located?
a)
thylakoid space
b)
thylakoid membrane
c)
central vacuole
d)
stroma
54.
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
55.
What gas does the process of photosynthesis release into the atmosphere?
a)
oxygen
b)
carbon dioxide
c)
water
d)
nitrogen
56.
What photosystem(s) are involved in the light reaction?
a)
Photosystem 1
b)
Photosystem 2
c)
Both
57.
Thylakoids are arranged in stacks called ____.
a)
Lamellae
b)
Stroma
c)
Granum
d)
Glucose
58.
The gel-like material that surrounds the grana is called ____
a)
lamellae
b)
granum
c)
thylakoid
d)
stroma
59.
What is the function of NADP+?
a)
It absorbs light
b)
It is an electron carrier
c)
It is a light-reflecting pigment
d)
It acts as long-term energy storage
60.
Which substance from the light-dependent reactions of photosynthesis is a source of energy for the light-independent reactions?
a)
ADP
b)
H2O
c)
NADPH
d)
pyruvic acid
61.
According to this absorption spectrum, what color is not used by the chlorophyll pigments?
a)
green
b)
blue
c)
yellow
d)
red
62.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
63.
What is the main purpose of the light reactions?
a)
To provide the energy and electrons for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
64.
Which organelle performs PHOTOSYNTHESIS?
a)
Chloroplast
b)
Mitochondria
c)
ribosomes
d)
vacuoles
65.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
66.
Which of the following is NOT a reactant of the light reactions?
a)
Light
b)
Water
c)
Carbon dioxide
67.
The energy lost by electrons as they move from PS II to PS I is used to 
a)
add H+ to NADP to form NADPH
b)
move H+ from the stroma to the thylakoid space
c)
move H+ from the thylakoid space to the stroma
d)
move the electrons to PS I
68.
The H+ concentration gradient is used to 
a)
make NADPH
b)
split a water molecule
c)
generate ATP
d)
form water
69.
Where does the light independent reaction take place?
a)
Matrix
b)
Stroma
c)
Thylakoid membrane
d)
Cytoplasm
70.
What provides the energy for the Calvin cycle?
a)
ATP
b)
ADP
c)
NADP
d)
NADPH2
71.

What provides the reducing power for the Calvin cycle?

a)

ATP

b)

ADP

c)

NADP+

d)

NADPH

72.

What reactants are needed for the Calvin cycle?

a)

Carbon dioxide

b)

Carbon dioxide, ATP and NADPH

c)

Carbon dioxide and glucose

d)

Oxygen and water

73.

What are the products of the light independent reaction?

a)

carbohydrate (glucose)

b)

triose phosphate

c)

carbon dioxide

d)

RuBP

74.

how many stages are in the Calvin cycle?

a)

2

b)

5

c)

6

d)

3

75.

what is the formula for glucose?

a)

C6H12O2

b)

C12H6O12

c)

C6H12O6

d)

C6O2H12

76.

what is a light independant reaction?

a)

a reaction that requires light

b)

a reaction that does not require light

c)

a reaction that does not have a calvin cycle

d)

a reaction that does not produce glucose

77.

Which of the following is NOT a reactant of the light independent reactions?

a)

NADPH

b)

ATP

c)

Oxygen

d)

Carbon dioxide

78.

To bring in nonliving carbon (CO2) and use it to make organic compounds is a process called _______________.

a)

carbon fixiation

b)

cellular respiration

c)

light reaction

d)

fermentation

79.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
6CO2 + 6H2O --> 6O2 + C6H12O6
b)
6CO2 + C6H12O6 + 6H2O --> O2 
c)
6O2 + 6H2O --> 6CO2 + C6H12O6
d)
C6H12O6 + 6O2 ---> 6H2O + 6CO2 
80.
What is the main function of chloroplast?
a)
Mitosis
b)
Meiosis
c)
Translation
d)
Photosynthesis
81.
Photosynthesis is the process of turning:
a)
Oxygen inton CO2
b)
Food into Energy
c)
DNA into RNA
d)
Sunlight into Energy
82.
What role do pigments play in photosynthesis?
a)
Make plants green, which is calming
b)
Capture sunlight
c)
Absorb water in roots
d)
Take in CO2
83.
What are the reactants (what's needed) for photosynthesis?
a)
glucose and oxygen
b)
light, water, and carbon dioxide
84.
What is the dependent variable?
a)
Light input
b)
Type of gas produced
c)
Size of leaf disk 
d)
# of disks floating
85.
Why are we using a syringe?
a)
To block direct light to leaf disks
b)
To prevent spillage
c)
To remove any air from the leaf disks
d)
They're fun to play with
86.
What is the independent variable?
a)
Amount of solute
b)
Type of leaf
c)
Amount of light
d)
Oxygen production
87.
The electrons for the Light Reactions come from
a)
NADP+
b)
Water
c)
NADPH
d)
Glucose
88.

How does the Calvin cycle differ from the light-dependent reactions?

a)

It takes place in the stroma.

b)

It takes place in the thylakoid.

c)

It requires light.

d)

It takes place in chloroplasts.

89.

During the light dependent reaction of photosynthesis, ________ is decomposed to supply hydrogen ions to produce NADPH, and important energy-carrying molecule used to help produce glucose during the light independent reaction.

a)

H2O

b)

NADPH

c)

ATP

d)

CO2

90.
When oxygen is released as a result of photosynthesis, it is a direct by-product of
a)
reducing NADP+
b)
splitting water molecules
c)
chemiosmosis
d)
electron transfer in photosystem II and I
91.
Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?
a)
The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, ℗i, and NADP+ to the light reactions.
b)
The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the Calvin cycle provides water and electrons to the light reactions.
c)
The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP.
d)
The light reactions provide the Calvin cycle with oxygen for carbon fixation, and the Calvin cycle provides the light reactions with sugars to produce ATP.
92.
series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions
a)
electron transport chain
b)
photosystem
c)
ATP synthase
d)
Calvin cycle
93.
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
94.

Light energy is used to

a)

split water into H and O

b)

combine C, H and O together

c)

make water

95.

What happens to excited electrons after the leave the photosystem I?

a)

They enter the Calvin cycle.

b)

They enter the light reactions.

c)

The enter the electron transport chain.

d)

They enter the dark reactions.

96.
The reactants of photosynthesis are
a)
sugar and water.
b)
sugar and oxygen.
c)
carbon dioxide and water.
d)
carbon dioxide and oxygen.
97.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
98.

Where is ATP synthesized?

a)

light reaction

b)

light independent reaction

c)

chlorophyll

d)

Calvin cycle

99.
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
100.

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

a)

NADP+

b)

NADPH

c)

ADP

d)

G3P (to form glucose)

101.

Which molecules from the light-dependent reactions are used to power the Calvin cycle?

a)

ADP and H2O

b)

NADPH and ATP

c)

oxygen and glucose

d)

light and carbon dioxide

102.

Oxygen gas is released as a byproduct after

a)

carbon fixation occurs in the Calvin cycle.

b)

NADP+ is reduced to NADPH at the end of the light-dependent reactions.

c)

water is split into H+ and O2 gas after water donates electrons to the ETC.

d)

ATP is used to power the Calvin cycle.

103.

Carbon fixation occurs

a)

in the light-dependent reactions

b)

in the Calvin cycle

c)

in the Krebs cycle

104.

The movement of H+ ions down their concentration gradient powers this enzyme to make ATP during the light-dependent reaction.

a)

Photosystem I

b)

ATP synthase

c)

Photosystem II

d)

RuBP

105.

________ donates electrons in the electron transport chain in the light-dependent reactions and _______ energizes those electrons.

a)

water : light

b)

water : ATP

c)

NADP : oxygen

d)

FADH2 : light

106.

ATP is synthesized at ATP synthase. This synthesis is driven by

a)

the movement of H+ ions from low to high.

b)

attaching ADP to a free H+ ion.

c)

the movement of H+ ions from high to low.

d)

synthesizing glucose.

107.
Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?
a)
CO2 and glucose
b)
H2O and O2
c)
electrons and H+
d)
ATP and NADPH
108.
Where does the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membrane
c)
outer membrane of the chloroplast
d)
interior of the thylakoid membrane
109.
When oxygen is released as a result of photosynthesis, it is a direct by-product of
a)
reducing NADP+
b)
splitting water molecules
c)
chemiosmosis
d)
electron transfer in photosystem II and I
110.
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
111.
Reactions that consume CO2 take place in
a)
the light reactions of photosynthesis only
b)
the calvin cycle only
c)
the light reactions and the calvin cycle
d)
the calvin cycle and the citric acid cycle
112.
What supplies the electrons that are lost in PS I?
a)
the electrons from PS II
b)
water
c)
glucose
d)
oxygen
113.
What is the function of NADP+?
a)
It absorbs light
b)
It is an electron carrier
c)
It is a light-reflecting pigment
d)
It acts as long-term energy storage
114.

What is the name of a pigment-containing complex found in a thylakoid?

a)

chlorophyll a

b)

photosystem

c)

grana

d)

stroma

115.
The enzyme responsible for Carbon Fixation in C3 Photosynthesis is
a)
RuBisCo
b)
PEP Carboxylase
c)
Hexokinase
d)
Pyruvate DeHydrogenase
116.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
117.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
does not absorb green light.
d)
does not absorb violet light.
118.
__________ is a stack of thylakoids
a)
Granum
b)
Stomata
c)
Stroma
d)
Chloroplast
119.
What is represented by "E" in this image?
a)
ATP
b)
NADPH
c)
Light Energy
d)
Glucose
120.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
6CO2 + 6H2O --> 6O2 + C6H12O6
b)
6CO2 + C6H12O6 + 6H2O --> O2 
c)
6O2 + 6H2O --> 6CO2 + C6H12O6
d)
C6H12O6 + 6O2 ---> 6H2O + 6CO2 
121.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
122.
Organisms, such as plants, that make their own food are called
a)
autotrophs
b)
heterotrophs.
c)
thylakoids.
d)
pigments.
123.
The H+ concentration gradient is used to 
a)
make NADPH
b)
split a water molecule
c)
generate ATP
d)
form water
124.
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
125.
Where does the carbon come from that is used to form glucose?
a)
The soil
b)
CO2 in the air
c)
From other carbohydrates
d)
Calvin Cycle
126.

What is represented by "D" in this image?

a)

ATP

b)

NADPH

c)

CO2

d)

Glucose

127.
During which phase of photosynthesis is O2 created?
a)
Light dependent reactions
b)
Calvin Cycle
c)
Citric Acid Cycle
d)
Glycolysis
128.
Which of these conditions would decrease the rate of photosynthesis in a plant?
a)
Above average precipitation
b)
Changing the daylight hours from 14 hrs to 10 hrs
c)
Changing the CO2 concentration from 380 ppm to 410 ppm
d)
All of these choices

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