AP - Unit 3: 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 reactions and the Calvin cycle.

Front

What is the primary function of the light reactions?

Back

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

Front

What is the Calvin cycle?

Back

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

Front

What is the role of ATP in photosynthesis?

Back

ATP provides the energy required for various biochemical reactions in the Calvin cycle.

Front

What is the role of NADPH in photosynthesis?

Back

NADPH acts as a reducing agent, providing electrons and hydrogen ions for the reduction of carbon dioxide to glucose in the Calvin cycle.

Front

What is photorespiration?

Back

Photorespiration is a process that occurs when the enzyme RuBisCO fixes oxygen instead of carbon dioxide, leading to a decrease in photosynthetic efficiency.

Front

Why do stomata close during hot conditions?

Back

Stomata close to prevent water loss, which can lead to reduced CO2 availability and increased photorespiration.

Front

What is RuBP?

Back

Ribulose bisphosphate (RuBP) is a 5-carbon sugar that acts as a carbon dioxide acceptor in the Calvin cycle.

Front

What are the products of the light reactions?

Back

The products of the light reactions are ATP, NADPH, and oxygen.