8. Energy

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What are the main products of photosynthesis?

Back

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

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells break down glucose and other organic molecules to produce ATP (adenosine triphosphate), the energy currency of the cell.

Front

How are photosynthesis and cellular respiration related?

Back

Photosynthesis produces glucose and oxygen, which are used in cellular respiration to produce ATP and carbon dioxide, creating a cycle between the two processes.

Front

What role does chlorophyll play in photosynthesis?

Back

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

Front

What is ATP and why is it important?

Back

ATP (adenosine triphosphate) is a molecule that stores and transfers energy within cells, making it crucial for various cellular processes.

Front

What happens to the rate of photosynthesis when carbon dioxide levels decrease?

Back

The rate of photosynthesis decreases because carbon dioxide is a key reactant in the photosynthesis process.

Front

What effect does temperature have on enzyme activity in photosynthesis?

Back

Temperature affects enzyme activity; at very low temperatures, enzyme activity slows down, leading to a reduced rate of photosynthesis.

Front

What is the significance of the light-dependent reactions in photosynthesis?

Back

The light-dependent reactions convert solar energy into chemical energy (ATP and NADPH) and produce oxygen as a byproduct.

Front

What is the significance of the light-independent reactions (Calvin Cycle) in photosynthesis?

Back

The light-independent reactions (Calvin Cycle) use ATP and NADPH produced in the light-dependent reactions to convert carbon dioxide into glucose.