# Glucose is made of 6 carbons. Where did those carbons originally come from?

Jul 5, 2017

It comes from Carbon Dioxide.

#### Explanation:

Glucose is formed through Photosynthesis by plants and some eukaryotas.

During that process, 6 molecules of $C {O}_{2}$ with 6 molecules of ${H}_{2} O$ are converted into 1 molecule of Glucose and 6 molecules of ${O}_{2}$. This reaction uses sunlight as the source of energy.

Or basically like this:

$6$ $C {O}_{2} +$$6$ ${H}_{2} O \implies {C}_{6} {H}_{12} {O}_{6}$ $\left(G l u \cos e\right) + 6$ ${O}_{6}$