There are several biomolecules present in the cytoplasm like lipids, nucleic acids, and proteins. Enclosed by the membrane, the cytoplasm is mainly composed of proteins, salts, and water, which fill each cell. It also contains cytoplasmic components such as organelles, mitochondria, cytosol, etc. In a eukaryotic cell that is an animal or plant cell, the cytoplasm is located between the nuclear envelope and membrane. However, in the prokaryotic cell, the cytoplasm is everything that is surrounded by the membrane.