Photosynthesis Unit Test

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

What occurs during light-dependent reactions?

Back

In light-dependent reactions, light energy is captured and converted into chemical energy in the form of ATP and NADPH.

Front

What is the Calvin Cycle?

Back

The Calvin Cycle is the light-independent stage of photosynthesis where ATP and NADPH are used to convert carbon dioxide into glucose.

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 photosynthesis.

Front

What gas is produced during photosynthesis?

Back

Oxygen is produced as a byproduct of photosynthesis during the light-dependent reactions.

Front

How is ATP formed during photosynthesis?

Back

ATP is formed during the light-dependent reactions through a process called photophosphorylation, where ADP and inorganic phosphate are combined using energy from light.

Front

What is the difference between ATP and ADP?

Back

ATP (adenosine triphosphate) has three phosphate groups and stores more energy, while ADP (adenosine diphosphate) has two phosphate groups and stores less energy.

Front

What is the significance of the light-independent reactions?

Back

The light-independent reactions (Calvin Cycle) are significant because they use the energy stored in ATP and NADPH to synthesize glucose from carbon dioxide.

Front

What factors affect the rate of photosynthesis?

Back

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