Question

What is the connection between photosynthesis and cellular respiration?

Answer 1

Photosynthesis and cellular respiration are connected through `"CO"_2` and `"H"_2"O"` as these are the substrate in photosynthesis and end products in cellular respiration.

Explanation:

Photosynthesis and respiration are connected to each other through `"CO"_2` and `"H"_2"O"` which are end products in photosynthesis and substrate in respiration.

Both the processes involve production of `"ATP"` molecules.

However, production of `"ATP"` molecules occurs due to photo-phosphorylation in photosynthesis and oxidative phosphorylation in cellular respiration.

Photosynthesis is anabolic process as glucose molecule is formed from `"CO"_2` and `"H"_2"O"`, whereas cellular respiration is catabolic process in which glucose is broken down into `"CO"_2` and `"H"_2"O"`

Photosynthesis is endothermic process and cellular respiration is exothermic process.

`"ATPs"` produced in photosynthesis during photo-phosphorylation by entrapping solar energy are used in the synthesis of glucose.

The energy stored in `"ATP"` molecules is changed into chemical energy stored in glucose molecule.

The chemical energy stored in glucose molecule during its synthesis in photosynthesis is converted into ATP molecules during oxidation of glucose into `"CO"_2` and `"H"_2"O"` (oxidative phosphorylation).