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WorksheetsPhotosynthesis Quiz
Total questions: 55
Worksheet time: 1hrs 13mins
What is produced as a by-product of the light-dependent reactions?
Glucose
Oxygen
NADPH
Carbon Dioxide
Where do the light-dependent reactions occur?
In the stroma
In the cytoplasm
In the thylakoids
In the nucleus
What do photosystems absorb to generate high-energy electrons?
ATP
Water
Carbon Dioxide
Sunlight
What is the role of ATP synthase in the thylakoid membrane?
To produce ATP
To absorb sunlight
To pump H+ ions
To break down water
What do NADP+ molecules become after picking up high-energy electrons?
NADPH
ADP
NADH
ATP
What is the main purpose of the Calvin cycle?
To produce ATP
To produce sugars
To absorb sunlight
To release oxygen
Which factor does NOT affect the rate of photosynthesis?
Temperature
Light intensity
Soil type
Water availability
What happens to the rate of photosynthesis at high light intensity?
It increases
It remains constant
It stops
It decreases
What adaptation do C4 plants have?
They have larger leaves
They store water
They capture low levels of carbon dioxide
They grow in shade
What do CAM plants do during the daytime?
Open their stomata
Absorb sunlight
Release carbon dioxide
Store water
What is the source of the oxygen released during photosynthesis?
ATP
Glucose
Water
Carbon dioxide
What is the main energy carrier produced in the light-dependent reactions?
ATP
Glucose
NADPH
FADH2
What happens to the 3-carbon molecules in the Calvin cycle?
They are released as oxygen
They are converted to glucose
They are used to produce ATP
They are stored as starch
What is the temperature range for optimal enzyme function in photosynthesis?
15°C to 30°C
10°C to 40°C
0°C to 35°C
0°C to 25°C
What is the compound that can accept high-energy electrons produced by chlorophyll and transfer them to another molecule?
ATP
NADP+
ADP
FADH2
Which type of reactions in photosynthesis require the direct involvement of light and light-absorbing pigments?
Krebs cycle
Light-independent reactions
Light-dependent reactions
Calvin cycle
What molecules are used in light-independent reactions to produce high-energy sugars from carbon dioxide?
ATP and NADPH
Chlorophyll and carotenoids
Glucose and oxygen
Water and sunlight
What is the primary function of chlorophyll in photosynthesis?
Convert carbon dioxide into oxygen
Produce high-energy sugars
Transfer electrons to ATP
Absorb sunlight for energy
What is the byproduct of the light-dependent reactions in photosynthesis?
Oxygen
Glucose
ATP
Carbon dioxide
Organisms that make their food from sunlight through photosynthesis.
chloroplast
mitochondria
autotroph
heterotroph
Organisms that must consume (eat) other organisms to get energy.
HETEROTROPH
AUTOTROPH
OAK TREE
GRASS
What is the main product of the Calvin cycle?
Oxygen
Glucose
ATP
NADPH
Which gas is taken in by plants during photosynthesis?
Oxygen
Nitrogen
Carbon dioxide
Hydrogen
What is the significance of water in photosynthesis?
It acts as a primary energy source
It is the source of electrons in the light-dependent reactions
It is converted into glucose
It transports nutrients to the chloroplast
Where do the light independent reactions of photosynthesis occur?
Thylakoids
Stroma
Granum
Chloroplasts
What is the function of ATP in the Calvin Cycle?
Capturing light
Supplying reducing power
Converting carbon dioxide
Acting as an energy currency
What is the main purpose of the light dependent reactions in photosynthesis?
Fix carbon dioxide
Produce glucose
Capture carbon dioxide
Produce ATP and NADPH
Plants can close their stomata when the temperature is hot
To prevent water loss
To prevent loss of oxygen
To prevent loss of carbon dioxide
To bring in more carbon dioxide
Location of thylakoid membranes
A
B
C
D
Source of energy powers this organelle.
A
B
C
D
Which letter shows where the Calvin Cycle, also called the light independent reaction, is?
D
E
F
G
What directly allows the ATP synthase to produce ATP?
Flow of H+ from low to high concentration
The flow of electrons through the transport chain
The flow of H+ from high to low concentration
CO2 flowing out of the cell
What is the role of ATP in photosynthesis?
ATP is produced by photosynthesis
ATP is used to convert glucose into energy
ATP is not involved in photosynthesis
ATP provides energy for the synthesis of glucose
During the light dependent reactions, _____________ and ____________ are made and then used in the light independent reactions (Calvin Cycle).
ATP, NADPH
Glucose, Oxygen
ATP, Oxygen
Glucose, NADPH
What materials get recycled back to the light reactions after the Calvin cycle?
ATP and NADPH
Glucose and Oxygen
ADP + Pi and NADP+
carbon dioxide and water
What does light do when it strikes the chlorophyll molecules of photosystems I and II?
Light causes glucose to be synthesized directly inside the chlorophyll molecules of the photosystems.
Light causes electrons to get excited (gain energy) and travel down the electron transport chain embedded in the thylakoid membrane.
Light causes the conversion of water into carbon dioxide, oxygen, and electrons.
Light directly causes carbon dioxide to attach to RuBP during the carbon fixation stage of the Calvin Cycle.
High H+ concentrations inside the thylakoid help
make NADPH
split a water molecule
generate ATP
form water
This is a cluster of chlorophyll and proteins found in thylakoid membrane
photosystems
electron transport chain
ATP synthase
Calvin cycle
High H+ concentrations inside the thylakoid help
make NADPH
split a water molecule
generate ATP
form water
ATP Synthase depends on
High concentrations of H+ in the thylakoid using passive transport to provide energy to make ATP to power the Calvin Cycle
Low concentrations of H+ in the thylakoid using passive transport to provide energy to make ATP to power the Calvin Cycle
High concentrations of H+ in the thylakoid using active transport to provide energy to make ATP to power the Calvin Cycle
Low concentrations of H+ in the thylakoid using active transport to provide energy to make ATP to power the Calvin Cycle
Thylakoids contain clusters of chlorophyll and proteins known as ______________________ . They absorb sunlight and generate high-energy ___________________ that pass along the _____________________.
chloroplasts, oxygen atoms, outer membrane
photosynthesis, protons, photosystem chain
photosystems, electrons, electron transport chain
stroma, sodium ions, oxygen receptor
