Understanding Photosynthesis Processes

What is the primary pigment involved in photosynthesis?

• Carotene

• Chlorophyll

• Xanthophyll

• Anthocyanin

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NGSS.HS-LS1-5

Which of the following is a product of the light-dependent reactions of photosynthesis?

• Glucose

• Oxygen

• Carbon dioxide

• Water

What is the main purpose of the Calvin cycle?

• To produce ATP

• To fix carbon dioxide into glucose

• To release oxygen

• To absorb sunlight

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NGSS.HS-LS1-6

NGSS.HS-LS2-5

Which of the following factors does NOT affect the rate of photosynthesis?

• Light intensity

• Temperature

• Oxygen concentration

• Carbon dioxide concentration

What is the balanced chemical equation for photosynthesis?

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

Explain how light intensity affects the rate of photosynthesis.

• As light intensity increases, the rate of photosynthesis decreases.

• As light intensity increases, the rate of photosynthesis increases until a certain point.

• Light intensity has no effect on the rate of photosynthesis.

• As light intensity decreases, the rate of photosynthesis increases.

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NGSS.HS-LS1-5

Describe the role of chlorophyll in the light-dependent reactions.

• Chlorophyll absorbs carbon dioxide.

• Chlorophyll absorbs sunlight and converts it into chemical energy.

• Chlorophyll releases oxygen as a byproduct.

• Chlorophyll transports electrons to the Calvin cycle.

Tags

NGSS.HS-LS1-5

How does temperature affect the rate of photosynthesis?

• Higher temperatures always increase the rate of photosynthesis.

• Lower temperatures always increase the rate of photosynthesis.

• There is an optimal temperature range for photosynthesis, beyond which the rate decreases.

• Temperature has no effect on photosynthesis.

Analyze the impact of water availability on photosynthesis.

• Water availability does not affect photosynthesis.

• Limited water availability can slow down or stop photosynthesis.

• Excess water always increases the rate of photosynthesis.

• Water is only needed for the Calvin cycle.

Evaluate the importance of photosynthesis in the carbon cycle.

• Photosynthesis is not part of the carbon cycle.

• Photosynthesis removes carbon dioxide from the atmosphere and incorporates it into organic molecules.

• Photosynthesis releases carbon dioxide into the atmosphere.

• Photosynthesis only affects the oxygen cycle.

Tags

NGSS.HS-LS2-5