Amoeba
is not considered as a body part <span>but it has similar
characteristic to unicellular and multicellular,
this is the reason why it is an outgroup in the cladogram. </span>In addition, to be
considered as an <span>outgroup,</span> an
organism must be part of a group on the tree but just very similar with the members
on that tree.
Making cheese is a commercial for lactic acid fermentation. Lactic acid is an essential ingredient in milk (hence lactose), and cheese is made from its fermentation.