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 light-dependent reactions occur?

Back

Light-dependent reactions occur in the thylakoid membranes of the chloroplasts.

Front

What is the primary function of light-dependent reactions?

Back

The primary function of light-dependent reactions is to convert solar energy into chemical energy (ATP and NADPH) and to store electrons.

Front

What is the Calvin cycle?

Back

The Calvin cycle is a series of enzymatic reactions that take place in the stroma of chloroplasts, where carbon dioxide is fixed into glucose.

Front

What is G3P and its role in photosynthesis?

Back

G3P (glyceraldehyde-3-phosphate) is a three-carbon sugar produced in the Calvin cycle; it is used to form glucose and other carbohydrates.

Front

How many G3P molecules are required to produce one glucose molecule?

Back

Two G3P molecules are required to produce one glucose molecule.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment found in chloroplasts that absorbs light energy, primarily in the blue and red wavelengths, and plays a crucial role in converting light energy into chemical energy.

Front

What is the significance of the cuticle in leaves?

Back

The cuticle is a waxy layer on the surface of leaves that helps prevent water loss through evaporation.

Front

What is the role of stomata in photosynthesis?

Back

Stomata are small openings on the leaf surface that allow for gas exchange; they enable carbon dioxide to enter and oxygen to exit.