Living things may have as few as one cell. These are referred to as "single-celled organisms" or "unicellular organisms." For example, bacteria are living things which fall under this category. Something that does not contain at least one cell would not be classified as "living".

The minimum number of cells living organisms can have is one cell. These organisms are called "unicellular." Some examples include many different kinds of bacteria, protozoa, and certain kinds of algae.

That´s a great question! Living things can have a minimum of one cell (called unicellular organisms). There are a lot of single celled organisms, like bacteria, algae (plants), some fungi, and protozoa. Many unicellular organisms live in colonies with others of their species. Amazingly, viruses don´t need any of their own cells at all, they can reproduce in other organisms cells and can just be genetic material (DNA or RNA) protected in a coat of proteins called a capsid.