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?

Back

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

Front

Where do the light-dependent reactions occur?

Back

The light-dependent reactions occur in the thylakoid membranes of chloroplasts.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment found in chloroplasts that absorbs light energy, primarily from the sun, which is essential for the light-dependent reactions.

Front

What is produced during the light-dependent reactions?

Back

During the light-dependent reactions, ATP, NADPH, and oxygen are produced.

Front

What is the stroma in a chloroplast?

Back

The stroma is the fluid-filled space inside chloroplasts where the light-independent reactions (Calvin cycle) take place.

Front

What is the Calvin cycle?

Back

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

Front

How does carbon dioxide concentration affect the rate of photosynthesis?

Back

Increased carbon dioxide concentration generally increases the rate of photosynthesis, up to a certain point, after which other factors may become limiting.

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What is the significance of oxygen in photosynthesis?

Back

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

Front

What factors can affect the rate of photosynthesis?

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Factors that can affect the rate of photosynthesis include light intensity, carbon dioxide concentration, temperature, and the availability of water.