Question

What is the relation between photosynthesis and respiration?

Answer 1

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Answer 2

Photosynthesis makes the glucose that cellular respiration uses to make ATP.

Explanation:

Plants are autotrophs , meaning that they make their own food from inorganic substances and sunlight = photosynthesis.

Photosynthesis :

- Input: water, CO2 and sunlight

- Output: glucose and O2.

This glucose is food for the plant, but is not yet usable energy. Cells of plants use mainly the molecule ATP (adenosine triphosphate) as energy.

Cellular respiration:

- Input: glucose and O2

- Output: CO2, water and ATP (energy).