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WorksheetsThe Calvin Cycle
Total questions: 15
Worksheet time: 45mins
What is the role of NADPH in the Calvin Cycle?
NADPH provides the reducing power needed to convert 3-PGA into G3P during the Calvin Cycle.
NADPH is used to transport oxygen in the Calvin Cycle.
NADPH acts as a catalyst for the reaction in the Calvin Cycle.
NADPH is involved in the synthesis of glucose from carbon dioxide.
What is RuBP?
A 5-carbon sugar that combines with carbon dioxide in the Calvin Cycle
A type of enzyme involved in photosynthesis
A molecule that stores energy in plants
A 6-carbon sugar produced during glycolysis
Why is the Calvin Cycle also called the dark reactions?
Because it requires light to occur
Because it can occur in the dark as long as ATP and NADPH are available
Because it only happens at night
Because it is a part of the light reactions
What is the Calvin Cycle?
A process where glucose is broken down for energy in mitochondria.
A series of biochemical reactions in the stroma of chloroplasts that convert carbon dioxide into glucose using ATP and NADPH.
A method of nitrogen fixation in legumes.
A type of cellular respiration that occurs in anaerobic conditions.
How many carbon dioxide molecules are required to produce one glucose molecule in the Calvin Cycle?
Four carbon dioxide molecules
Five carbon dioxide molecules
Six carbon dioxide molecules
Seven carbon dioxide molecules
What effect do high temperatures have on the Calvin Cycle?
High temperatures can speed up the Calvin Cycle by increasing enzyme activity.
High temperatures can slow down the Calvin Cycle because they can denature enzymes involved in the process.
High temperatures have no effect on the Calvin Cycle.
High temperatures enhance the production of glucose in the Calvin Cycle.
What is the significance of ATP in the Calvin Cycle?
ATP is used to transport glucose out of the chloroplasts.
ATP provides the energy required for the conversion of 3-PGA into G3P and for the regeneration of RuBP.
ATP is involved in the synthesis of chlorophyll.
ATP is a byproduct of the Calvin Cycle.
How many ATP molecules are used in the Calvin Cycle to regenerate RuBP?
One ATP molecule
Two ATP molecules
Three ATP molecules
Four ATP molecules
What is the relationship between the light-dependent reactions and the Calvin Cycle?
The light-dependent reactions produce glucose, which is used in the Calvin Cycle to generate ATP.
The light-dependent reactions produce ATP and NADPH, which are used in the Calvin Cycle to convert carbon dioxide into glucose.
The Calvin Cycle occurs in the mitochondria, while the light-dependent reactions occur in the chloroplasts.
The light-dependent reactions and the Calvin Cycle are two separate processes that do not interact.
What role does G3P play in the Calvin Cycle?
G3P is a 3-carbon sugar that can be used to form glucose and regenerate RuBP.
G3P is a byproduct of cellular respiration.
G3P is a type of enzyme that catalyzes reactions in the Calvin Cycle.
G3P is a pigment that absorbs light energy for photosynthesis.
What is the primary function of the Calvin Cycle?
To convert carbon dioxide into glucose, which can be used as energy by the plant.
To absorb sunlight and convert it into chemical energy.
To transport nutrients throughout the plant.
To release oxygen as a byproduct of photosynthesis.
Where do the dark reactions of photosynthesis occur?
In the thylakoid membranes of chloroplasts.
In the stroma of chloroplasts.
In the cytoplasm of the cell.
In the mitochondria of the cell.
What happens to G3P molecules after glucose is formed?
Some G3P molecules are used to regenerate RuBP, while others can be used to synthesize glucose and other carbohydrates.
All G3P molecules are converted into ATP immediately.
G3P molecules are stored as starch in the chloroplasts.
G3P molecules are transported out of the cell for energy production.
What is the first step of the Calvin Cycle?
The conversion of glucose to pyruvate.
The fixation of carbon dioxide to RuBP, catalyzed by the enzyme RuBisCO.
The synthesis of ATP from ADP and phosphate.
The reduction of 3-PGA to G3P.
What is the end product of the Calvin Cycle?
G3P
ATP
NADPH
Glucose
