Belfast, Maine. Belfast is a city in Waldo County, Maine, in the United States. As of the 2010 census, the city population was 6,668. Located at the mouth of the Passagassawakeag River estuary on Penobscot Bay, Belfast is the county seat of Waldo County.
Cilia and flagella are projections from the cell. They are made up of microtubules, as shown in this cartoon and are covered by an extension of the plasma membrane. They are motile and designed either to move the cell itself or to move substances over or around the cell.wo of these microtubules join to form one doublet in the cilia or flagella This is shown in the middle panel. Note that one of the tubules is incomplete. Furthermore, there are important microtubule associated proteins (MAPs) projecting from one of the microtubule subunits.
The frustule is composed almost purely of silica, made from silicic acid, and is coated with a layer of organic substance, which was referred to in the early literature on diatoms as pectin, a fiber most commonly found in cell walls of plants.This layer is actually composed of several types of polysaccharides.he frustule is composed almost purely of silica, made from silicic acid, and is coated with a layer of organic substance, which was referred to in the early literature on diatoms as pectin, a fiber most commonly found in cell walls of plants. This layer is actually composed of several types of polysaccharides.