Chapter 9 Photosynthesis Pre-Post 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 main reactants of photosynthesis?

Back

The main reactants of photosynthesis are carbon dioxide (CO₂) and water (H₂O).

Front

What are the main products of photosynthesis?

Back

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

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment found in the chloroplasts of plants that absorbs light energy, primarily from the sun, which is essential for the photosynthesis process.

Front

What are light-dependent reactions?

Back

Light-dependent reactions are the first stage of photosynthesis that occur in the thylakoid membranes, where light energy is converted into chemical energy in the form of ATP and NADPH.

Front

What are light-independent reactions (Calvin cycle)?

Back

Light-independent reactions, also known as the Calvin cycle, occur in the stroma of chloroplasts and use ATP and NADPH to convert carbon dioxide into glucose.

Front

What is ATP and its role in photosynthesis?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing the energy needed for various biochemical reactions, including the synthesis of glucose during photosynthesis.

Front

What is NADPH and its role in photosynthesis?

Back

NADPH (nicotinamide adenine dinucleotide phosphate) is a reducing agent that provides the high-energy electrons needed for the reduction of carbon dioxide to glucose in the Calvin cycle.

Front

How does carbon dioxide enter the plant?

Back

Carbon dioxide enters the plant through small openings called stomata, located on the leaves.

Front

What is the significance of the Calvin cycle?

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The Calvin cycle is significant because it is the process through which carbon dioxide is fixed and converted into glucose, which serves as an energy source for the plant.