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.
Cytoplasm & Cytoskeleton . Cytoplasm: The cytoplasm is the jelly-like material that fills in between the nuclear membrane and cell membrane. Eukaryotes cells (containing a nucleus) contains all the organelles such as, mitochondria, the endoplasmic reticulum, the Golgi apparatus, and lysosomes and peroxisomes. Each has specific functions in the cell.