Compléter Cell TheoryVersion en ligne Matching with cell theory terms par Michelle Testa 1 organisms structures smallest many one cells small stage focus unicellular life multicellular living lens cells magnification microscope bigger functions eyepiece slide All , or living things , are made up of . Cells are the unit of - they make the and carry out the of all things . Cells are so , they can only be seen with a . To use a microscope , place a with a specimen on the . Look through the of the microscope and the by turning the knobs . Different lenses have different levels of - some lenses will make cells appear much ! All living things are made out of . Organisms such as plants , humans , and other animals are , meaning they are made of cells . Organisms such as bacteria , are , meaning they are made of only cell .