Chapter 9: 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 the chloroplasts.

Front

What is the primary function of the light-dependent reactions?

Back

The primary function of the light-dependent reactions is to convert solar energy into chemical energy in the form of ATP and NADPH.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment found in chloroplasts that absorbs light energy, primarily from the blue and red wavelengths, and plays a crucial role in the light-dependent reactions.

Front

What is the Calvin cycle?

Back

The Calvin cycle, also known as the light-independent reactions, is the process in which carbon dioxide is fixed into glucose using ATP and NADPH produced in the light-dependent reactions.

Front

What are the inputs of photosynthesis?

Back

The inputs of photosynthesis are carbon dioxide (CO2), water (H2O), and light energy.

Front

What are the outputs of photosynthesis?

Back

The outputs of photosynthesis are glucose (C6H12O6) and oxygen (O2).

Front

What is an autotroph?

Back

An autotroph is an organism that can produce its own food from inorganic substances, using light or chemical energy. Examples include plants and some bacteria.

Front

What is the significance of oxygen produced during photosynthesis?

Back

Oxygen produced during photosynthesis is essential for the survival of aerobic organisms, as it is used in cellular respiration.