In depth: Light-dependent rxn and Calvin cycle

What is the major entry point for autotrophs to make energy?

• Cellular respiration

• Fermentation

• Photosynthesis

• Chemosynthesis

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which two types of reactions are involved in photosynthesis?

• Oxidation and reduction reactions

• Acid-base and neutralization reactions

• Synthesis and decomposition reactions

• Single displacement and double displacement reactions

What are the two major stages of photosynthesis?

• Light dependent and light independent reactions

• Glycolysis and fermentation

• Krebs cycle and electron transport chain

• Anabolic and catabolic reactions

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NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the role of chlorophyll in photosynthesis?

• It breaks down glucose molecules

• It helps absorb light

• It captures carbon dioxide from the atmosphere

• It transports electrons to the mitochondria

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NGSS.HS-LS1-5

What is the function of the reaction center in photosynthesis?

• It splits water molecules to release oxygen.

• It transfers energy to the adjacent chlorophyll molecule.

• It absorbs light and converts it into chemical energy.

• It synthesizes ATP from ADP and inorganic phosphate.

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NGSS.HS-LS1-5

What happens to water molecules in photosystem II?

• They are oxidized and release electrons.

• They are reduced and gain electrons.

• They are used to synthesize ATP.

• They are transported to the Calvin cycle.

Which of the following best describes the role of NADPH and ATP in the Calvin cycle?

• They act as substrates for building glucose molecules.

• They provide the energy and reducing power needed for the cycle.

• They are waste products of the Calvin cycle.

• They absorb light energy to initiate the cycle.

What is the primary role of the light-dependent reactions in photosynthesis?

• To produce glucose directly from carbon dioxide and water.

• To generate oxygen as a byproduct for respiration.

• To absorb light and produce energy carriers like NADPH and ATP.

• To convert NADPH and ATP back into NADP+ and ADP.

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NGSS.HS-LS1-5

the ______ ________ provides the power for ATP synthase to run.

Are the words "proton gradients" and "electrochemical gradient" referring to the same thing?

• NO

• YES