cells and tissues

Cells are the basic organizational unit that make up all living things. It is the smallest form of unit that make up larger parts of the human body. Humans are multicellular which means that we are made up of countless cells whereas bacteria is unicellular because it is made up of only one single cell. There are many different types of cells such as eukaryotic cells and prokaryotic cells. Tissues are a group of cells that perform the same or similar function. It is the level of unit that are larger than cells but smaller than organs. There are also many different types of tissues such as connective tissues, muscle tissues, and neural tissues. Connective tissues hold together other organs. For example, bones are tissues that hold together and support other parts that make up a body structure. Muscle tissues make up the shape of a body. Neural tissues are tissues that relate to the brain and the nervous system. There are also other types of tissues that contribute in the functions of an organism.