â¢ SEMICOLON (noun) The noun SEMICOLON has 1 sense: 1. a punctuation mark (';') used to connect independent clauses; indicates a closer relation than does a period. Familiarity information: SEMICOLON used as a noun is very rare.
Cells are the building blocks of life. All living organisms are made up of cells. The cells were discovered by Robert Hooke in 1665. In the human body there are about 100 trillion to 1014 cells. hey are made up of a single cell. O rganisms like the amoeba, P aramecium are single-celled organisms, they are the oldest forms of life, they existed about 3.8 million years ago. Bacteria, a rchaea, protozoa, unicellular algae and un i cellular fungi are the main groups of unicellular organisms.
Here is an illustration of an animal and a plant cell. Some microorganisms are made up of only one cell, whiles other bigger organisms such as an ant or a lion are made up of millions of different cells.Unicellular organism: An organism with only one cell is called a unicellular organism.Unicellular organisms can be complex too, even though they are simply a one-cell organism. They include bacteria, yeast, amoeba and paramecia. Multicellular organism: These are organisms that are made up of more than one cell.ere is an illustration of an animal and a plant cell. Some microorganisms are made up of only one cell, whiles other bigger organisms such as an ant or a lion are made up of millions of different cells.