What is the smallest living unit? And how is it organised?

The smallest living unit is the CELL and is organised in different ways according to its function. Although they are a bit different, there are some common features. For the animal cell, these are: a nucleus, where the genetic information is contained, a cell membrane, a cytoplasm, where all the main functions occur, mitocondria (where respiration takes place) and ribosomes (where we have the protein synthesis). If then, we decide to look at the plant cells in particular, we will find other specific features such as: cloroplasts (which uses light to make energy) and vacuoles. Differently from the previous ones, the bacterial cell has something unique: a cell wall. This cell wall is present only here and is the one which is exploited to create antibiotics by scientists.