GENERAL HISTOLOGY

Detailed explanation-1: -These single cells are known as unicellular organisms. All the life processes in a unicellular organism, including digestion, excretion, respiration, occur within a single cell. These cannot be seen by naked eyes and are hence called microorganisms.

Detailed explanation-2: -Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast.

Detailed explanation-3: -A unicellular organism is composed of a single cell. This single cell performs all the biological processes required for the maintenance of life activities of a cell. Thus, in case of unicellular organisms, all life activities are performed by a single cell.

Detailed explanation-4: -Eukaryotes can be unicellular. While prokaryotes are always unicellular organisms, eukaryotes can be either unicellular or multicellular. For example, most protists are single-celled eukaryotes!

Detailed explanation-5: -Complete answer: Unicellular organisms are known as single-celled organisms that consist of a single cell. They are capable of performing both the independent existence and perform all the life processes for their survival. For example Amoeba, Chlamydomonas, Bacteria, Yeast, etc.