Photosynthesis

Front

What is photosynthesis?

Back

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

Front

What are the main products of photosynthesis?

Back

The main products of photosynthesis are glucose (a sugar) and oxygen.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a green pigment found in plants that absorbs light energy, primarily from the blue and red wavelengths, and reflects green light.

Front

What gases enter and exit plants during photosynthesis?

Back

Enter: Carbon dioxide; Exit: Oxygen.

Front

How does light intensity affect the rate of photosynthesis?

Back

Light intensity increases the rate of photosynthesis, up to a certain point, after which it may plateau.

Front

What happens to photosynthesis if carbon dioxide is removed from the environment?

Back

If carbon dioxide is completely removed, sugars will not be produced.

Front

What is the significance of water in photosynthesis?

Back

Water is a raw material in photosynthesis; it is split to provide electrons and protons, and oxygen is released as a byproduct.

Front

What is the equation for photosynthesis?

Back

6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂.

Front

What is the light-dependent reaction in photosynthesis?

Back

The light-dependent reactions occur in the thylakoid membranes and convert light energy into chemical energy (ATP and NADPH) while releasing oxygen.

Front

What is the light-independent reaction (Calvin Cycle) in photosynthesis?

Back

The Calvin Cycle occurs in the stroma of chloroplasts and uses ATP and NADPH to convert carbon dioxide into glucose.