An alkene is a hydrocarbon containing double bonds. An alkyne is a hydrocarbon containing triple bonds. Ethene, C 2 H 4, is an example of an unsaturated hydrocarbon with a double bond.ethyne (acetylene), C 2 H 2 is an example of an unsaturated hydrocarbon with a triple bond.thene, C 2 H 4, is an example of an unsaturated hydrocarbon with a double bond. ethyne (acetylene), C 2 H 2 is an example of an unsaturated hydrocarbon with a triple bond.
Mitochondria and chloroplasts are also surrounded by membranes, but they have unusual membrane structures â specifically, each of these organelles has two surrounding membranes instead of just one. The outer membrane of mitochondria and chloroplasts has pores that allow small molecules to pass easily.
1 Major organelles such as the endoplamic reticulum, mitochondria, vacuoles, Golgi apparatus, lysosomes and chloroplasts in plants can be suspended in this area of the cytosol. 2  Cortosol is contained in cytoplasm that is found within organelles that are membrane bound.ownload/View the PDF. Cytoplasm contains a gel substance called cytosol that is contained within a cell membrane and organelles of animal cells of sub-structures.