Out here in the stroma, a bunch of different enzymes use the carbon dioxide molecules and hydrogen ions made during the light dependent phase to assemble sugar fragments which are half of a glucose molecule (just 3 carbon atoms, instead of the 6 required to make a complete glucose molecule).
An alkane, by definition, only has single bonds. Even if your second diagram made sense (it doesn't for the reason above) it would not be an alkane at all because there is a double bond. Alkanes are a functional group. It's called alkil. As a functional group they have the generic formula R(CH2)nH.
Alkanes are the simplest family of hydrocarbons-compounds containing carbon and hydrogen only. They only contain carbon-hydrogen bonds and carbon-carbon single bonds.The first six are: methaneCH4 ethaneC2H6 propaneC3H8 butaneC4H10 pentaneC5H12 hexaneC6H14 You can work out the formula of any of them using: CnH2n+2 Isomerism All the alkanes with 4 or more carbon atoms in them show structural isomerism.hey only contain carbon-hydrogen bonds and carbon-carbon single bonds. The first six are: methaneCH4 ethaneC2H6 propaneC3H8 butaneC4H10 pentaneC5H12 hexaneC6H14 You can work out the formula of any of them using: CnH2n+2 Isomerism All the alkanes with 4 or more carbon atoms in them show structural isomerism.