Photosynthesis and the Calvin Cycle

What are the two types of reactions in photosynthesis?

• Light-dependent and light-independent reactions

• Calvin Cycle and Krebs Cycle

• Respiration and fermentation

• Oxidation and reduction

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What is the function of xylem in plants?

• Conduct water and minerals to different parts of the plant

• Absorb sunlight for photosynthesis

• Release oxygen into the atmosphere

• Transport glucose from leaves to roots

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How does carbon dioxide enter and oxygen exit the leaves of a plant?

• Through tiny pores called stomata

• Through the roots via xylem

• Through the chloroplasts

• Through the cell walls

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What is the pigment responsible for absorbing photons from the sun?

• Chlorophyll

• Melanin

• Hemoglobin

• Carotene

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What is the purpose of the light-dependent reactions in photosynthesis?

• To convert light energy into chemical energy (ATP and NADPH)

• To convert glucose into oxygen

• To convert water into carbon dioxide

• To convert carbon dioxide into glucose

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What is the role of ATP synthase in the thylakoid membrane?

• To convert ADP into ATP using the energy from protons

• To convert glucose into ATP

• To convert oxygen into ATP

• To convert carbon dioxide into ATP

What is the primary product of the Calvin Cycle?

• Glyceraldehyde 3-phosphate (G3P)

• Glucose

• ATP

• NADPH

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What is the purpose of RuBisCo in the Calvin Cycle?

• To fix carbon dioxide onto Ribulose Bisphosphate (RuBP)

• To convert G3P into glucose

• To produce ATP and NADPH

• To split water molecules

Why do plants need to regenerate RuBP in the Calvin Cycle?

• To continue the cycle and fix more carbon dioxide

• To produce oxygen as a byproduct

• To convert G3P into glucose

• To release excess energy

What is the ultimate product of photosynthesis?

• Glyceraldehyde 3-phosphate (G3P)

• Glucose

• ATP

• Oxygen

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