Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Photosynthesis

Total questions: 74

Worksheet time: 6hrs 20mins

Name
Class
Date
1.
Protons 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
2.
ATP gets formed in the light dependent reaction by which process?
a)
Chemiosmosis
b)
Photosmosis
c)
Diffusion
d)
Active Transport
3.
Which of the following is NOT a product of the light reactions?
a)
ATP
b)
NADPH
c)
Oxygen
d)
Glucose
4.
What does ATP synthase do?
a)
Create ATP through chemiosmosis.
b)
Break down ATP through chemiosmosis.
c)
Break down NADPH. 
d)
Create NADPH.
5.
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
6.
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
7.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
8.
Where are photosystems located?
a)
thylakoid space
b)
thylakoid membrane
c)
central vacuole
d)
stroma
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.
What photosystem(s) are involved in the light reaction?
a)
Photosystem 1
b)
Photosystem 2
c)
Both
11.
True or False:  The light reaction is dependent of light?
a)
True
b)
False
12.
In a light-dependent reaction, water and sunlight is needed to make oxygen and _____.
a)
carbon dioxide
b)
sugar
c)
ATP
d)
chlorophyll
13.
Thylakoids are arranged in stacks called ____.
a)
Lamellae
b)
Stroma
c)
Granum
d)
Glucose
14.
The gel-like material that surrounds the grana is called ____
a)
lamellae
b)
granum
c)
thylakoid
d)
stroma
15.

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

a)

Oxygen

b)

NADPH

c)

ATP

d)

Glucose (Sugar)

16.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
17.
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
18.

What part of the plant cell performs photosynthesis?

a)

The Mitochondrion

b)

The Nucleus

c)

The Chloroplast

d)

The Cell Wall

19.
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
20.
The principal chemical compound that living things use to store energy is
a)
DNA
b)
ATP
c)
H2O
d)
CO2
21.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
22.
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
23.
If all four plants were watered daily but placed in a closet, receiving no sunlight, what process would NOT occur?
a)
Ingestion of carbon dioxide
b)
Filtration of water through the soil
c)
Photosynthesis
d)
Water absorbtion
24.
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
25.
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
26.

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

27.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
28.
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
29.
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
30.
Where is chlorophyll found in the chloroplast?
a)
in the stroma
b)
within photosystems
c)
in the ATP synthase
d)
in the electron carrier molecule
31.

Which of the following is true?

a)

PS1 comes before PSII

b)

PSII comes before PS1

32.

What does light do when it strikes the chlorophyll molecules of photosystems I and II?

a)

Light causes glucose to be synthesized directly inside the chlorophyll molecules of the photosystems.

b)

Light causes electrons to get excited (gain energy) and travel down the electron transport chain embedded in the thylakoid membrane.

c)

Light causes the conversion of water into carbon dioxide, oxygen, and electrons.

d)

Light directly causes carbon dioxide to attach to RuBP during the carbon fixation stage of the Calvin Cycle.

33.

After light excites the electron and they leave Photosystem II to travel down the first electron transport chain, how are these electrons replaced to Photosystem II?

a)

Oxygen is reduced and the electrons are given to the chlorophyll molecules of photosystem II.

b)

Carbon dioxide is split, and the electrons are given to the chlorophyll molecules of photosystem II.

c)

Hydrogen undergoes fusion, and the electrons are given to the chlorophyll molecules of photosystem II.

d)

Water is split, and the electrons are given to the chlorophyll molecules of photosystem II.

34.

The splitting of water at photosystem II is known as ____ and results in the production of _____.

a)

photosynthesis: carbon dioxide, G3P, and electrons that are given to photosystem II.

b)

photolysis: oxygen, hydrogen ions (protons), and electrons that are given to photosystem II.

c)

the Calvin cycle: carbon dioxide, G3P, and electrons that are given to photosystem II

d)

chemiosmosis: oxygen, hydrogen ions (protons), glucose and electrons that are given to photosystem II.

35.

As the electrons travel from photosystem II down the first electron transport chain, their energy is used to….

a)

form oxygen, water, NADPH, and glucose.

b)

pump hydrogen ions into the stroma, producing a concentration gradient that will later be used by an enzyme to form ADP and phosphate.

c)

pump hydrogen ions into the thylakoid space, producing a concentration gradient that will later be used by ATP synthase to form ATP.

d)

create glucose directly.

36.

After electrons get excited by light a second time (at photosystem I), where do they go?

a)

They travel down a second electron transport chain and are donated to ADP, which is then converted to ATP.

b)

They remain excited and then travel to photosystem II where they get even more excited until they spontaneously combust.

c)

They travel down a second electron transport chain and are donated to NADP+ which becomes NADPH (an electron carrier).

d)

They travel down a second electron transport chain and are donated to oxygen which then bonds to hydrogen ions to form water.

37.
Protons 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
38.
Which of the following move through the electron transport chain?
a)
Protons
b)
Electrons
c)
Water
d)
Carbon Dioxide
39.
ATP gets formed in the light dependent reaction by which process?
a)
Chemiosmosis
b)
Photosmosis
c)
Diffusion
d)
Active Transport
40.
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
41.
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
42.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
43.
Where are photosystems located?
a)
thylakoid space
b)
thylakoid membrane
c)
central vacuole
d)
stroma
44.
The light-dependent reaction takes place in the
a)
mitochondria
b)
thylakoids
c)
ribosomes
d)
stroma
45.
What are the reactants of photosynthesis?
a)
carbon dioxide and oxygen
b)
water and oxygen
c)
carbon dioxide and water
d)
water and glucose
46.
Which organelle performs PHOTOSYNTHESIS?
a)
Chloroplast
b)
Mitochondria
c)
ribosomes
d)
vacuoles
47.
Which of the following move through the electron transport chain?
a)
Protons
b)
Electrons
c)
Water
d)
Carbon Dioxide
48.
What does ATP synthase do?
a)
Create ATP through chemiosmosis.
b)
Break down ATP through chemiosmosis.
c)
Break down NADPH. 
d)
Create NADPH.
49.
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
50.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
51.
Where are photosystems located?
a)
thylakoid space
b)
thylakoid membrane
c)
central vacuole
d)
stroma
52.
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
53.
The light-dependent reaction takes place in the
a)
mitochondria
b)
thylakoids
c)
ribosomes
d)
stroma
54.
Which organelle performs PHOTOSYNTHESIS?
a)
Chloroplast
b)
Mitochondria
c)
ribosomes
d)
vacuoles
55.
What photosystem(s) are involved in the light reaction?
a)
Photosystem 1
b)
Photosystem 2
c)
Both
56.
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
57.
What does ATP synthase do?
a)
Create ATP in chemiosmosis.
b)
Break down ATP in chemiosmosis.
c)
Break down NADPH. 
d)
Create NADPH.
58.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
59.
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
60.
Which organelle performs PHOTOSYNTHESIS?
a)
Chloroplast
b)
Mitochondria
c)
ribosomes
d)
vacuoles
61.
Chemiosmosis creates molecules of 
a)
ATP
b)
NADPH
c)
NADP
d)
C6H12O6
62.
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
63.
Chemiosmosis occurs 
a)
in the lumen
b)
in the stroma
c)
in the reaction center
d)
across the thylakoid membrane
64.
What is needed for chemiosmosis to occur?
a)
A hydrogen ion concentration gradient
b)
An oxygen concentration gradient
c)
An equal amount of H+ in the stroma and lumen
d)
An equal amount of oxygen in the stroma and lumen
65.
What is the name of the enzyme involved in ATP production?
a)
ATP synthase
b)
ADP synthase
c)
ATP synthize
d)
ADP synthize
66.
Protons 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
67.
What are electron carrier molecules?
a)
Molecules that transfer high energy electrons to other molecules
b)
Molecules that carry energy from one reaction to another
c)
Molecules that make ATP
d)
Molecules that have little dogs that fit in their purse
68.
In chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + Pi to ATP?  
a)
energy released as electrons flow through the ETC
b)
energy released from substrate level phosphorylation
c)
energy released from ATP synthase pumping H+ against their gradient
d)
energy released from movement of protons through ATP synthase
69.
Which of the following processes could still occur in a chloroplast in the presence of an inhibitor that prevents H+ from passing through ATP synthasecomplexes?
a)
Addition of inorganic phosphate to ADP
b)
Calvin cycle
c)
production of ATP
d)
generation of proton gradient
70.
Cause: Plants absorb light from the sun.
a)
Effect: High-energy electrons are produced.
b)
Effect: Plants produce glucose and oxygen.
c)
Effect: They provide the energy needed to create ATP from ADP and phosphate.
d)
Effect: Therefore, there is a concentration gradient.
71.
Cause: Electrons need to be replaced in photosystem II.
a)
Effect: Water is broken apart into hydrogen ions and oxygen gas to replace lost electrons.
b)
Effect: High-energy electrons are produced.
c)
Effect: Plants produce glucose and oxygen.
d)
Effect: They provide the energy needed to create ATP from ADP and phosphate.
72.
Cause: Electrons move through the electron transport chain to photosystem I.
a)
Effect: They are re-energized by the sun. As a result, they are used to make NADPH from NADP+.
b)
Effect: Water is broken apart into hydrogen ions and oxygen gas to replace lost electrons.
c)
Effect: High-energy electrons are produced.
d)
Effect: Plants produce glucose and oxygen.
73.
Cause: There is a higher concentration of hydrogen ions inside the thylakoid than in the stroma.
a)
Effect: Therefore, there is a concentration gradient.
b)
Effect: They are re-energized by the sun. As a result, they are used to make NADPH from NADP+.
c)
Effect: Water is broken apart into hydrogen ions and oxygen gas to replace lost electrons.
d)
Effect: High-energy electrons are produced.
74.
Cause: Hydrogen ions exit the thylakoid through the ATP synthase protein.
a)
Effect: They provide the energy needed to create ATP from ADP and phosphate.
b)
Effect: Therefore, there is a concentration gradient.
c)
Effect: They are re-energized by the sun. As a result, they are used to make NADPH from NADP+.
d)
Effect: Water is broken apart into hydrogen ions and oxygen gas to replace lost electrons.

Similar Resources on Wayground

Embryology

77 questions

Embryology

quiz

Worksheet

•

4th Grade

soal olimpiade IPA 2

70 questions

soal olimpiade IPA 2

quiz

Worksheet

•

5th Grade

Week of 2/4

70 questions

Week of 2/4

quiz

Worksheet

•

5th Grade

Unit 7 Test

71 questions

Unit 7 Test

quiz

Worksheet

•

6th - 8th Grade

2nd TERM REVISION. PLANTS-ANIMALS

70 questions

2nd TERM REVISION. PLANTS-ANIMALS

quiz

Worksheet

•

4th - 5th Grade

bio diagrams review

70 questions

bio diagrams review

quiz

Worksheet

•

4th Grade

Semester 1 2025 Hardy Biology

75 questions

Semester 1 2025 Hardy Biology

quiz

Worksheet

•

6th Grade

Benchmark Review

78 questions

Benchmark Review

quiz

Worksheet

•

5th - 9th Grade