They are composed of thylakoids.
Observation is broken up into three parts. The first is the date. Then you have the activity and last you have a brief description of what is being observed.
E)Krebs cycle/ cristae of mitochondria
Krebs cycle occurs inside the matrix of the mitochondria. Electron transport chain takes place in the cristae.
The process of evolution is based on the genotypic inheritance as the genes changes overtime.
