Photosynthesis

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What are the two main stages of photosynthesis?

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The two main stages of photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle).

Front

What occurs during light-dependent reactions?

Back

During light-dependent reactions, light energy is captured and converted into chemical energy in the form of ATP and NADPH, and oxygen is released as a byproduct.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment found in the chloroplasts of plants that absorbs light energy, primarily from the blue and red wavelengths, to drive the photosynthesis process.

Front

What is the equation for photosynthesis?

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The equation for photosynthesis is: 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂.

Front

What is ATP and why is it important in photosynthesis?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing energy for various cellular processes, including the light-independent reactions of photosynthesis.

Front

What is NADPH and its role in photosynthesis?

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NADPH (nicotinamide adenine dinucleotide phosphate) is a reducing agent that provides the high-energy electrons needed for the conversion of carbon dioxide into glucose during the Calvin cycle.

Front

What is the Calvin cycle?

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The Calvin cycle is the series of biochemical reactions that occur in the stroma of chloroplasts, where carbon dioxide is fixed and converted into glucose using ATP and NADPH.

Front

What is the significance of oxygen in photosynthesis?

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Oxygen is a byproduct of photosynthesis, released during the light-dependent reactions, and is essential for the survival of aerobic organisms.

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How do plants obtain carbon dioxide for photosynthesis?

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Plants obtain carbon dioxide from the atmosphere through small openings in their leaves called stomata.