I learned that cells have a cell wall and that animal and plant cells have different types of cells and. A man with the last name hooke was the first person to describe cells. All cells have membranes,organelles,cytoplasm and DNA. also prokaryotes are single-celled organisms that do not have a nucleus or membrane-bound organelle. Ribosomes are tiny round organelles made of protein and other material. There are 3 types of archaea, heat loving,salt loving and methane making. And the word protist describes humans. The function of a cell wall is it gives support to the cells. Chicken eggs grow larger because it does not have to take in nutrients. There are 3 parts of a cell theory, all organisms are made of one or more cells, the cell is the basic unit of all living things, all cells come from existing cells. Tissue is a group of cells that perform a common function. And an organ is a collection of tissues that carry out a specialized function of the body.