Amoeba is at the cellular level of organization. This means that it is made up of just one cell, which is capable of performing all the functions necessary for life, such as obtaining nutrients, producing energy, and reproducing. The cell of an amoeba is highly specialized and contains various structures, such as a nucleus, mitochondria, and a contractile vacuole. These structures work together to carry out the various functions required for the survival of the cell. Therefore, Amoeba is a unicellular organism and exists at the cellular level of organization.