Fill in the Blanks Cell TheoryOnline version Matching with cell theory terms by Michelle Testa 1 many eyepiece life structures organisms lens functions microscope small multicellular magnification one cells cells slide focus stage living smallest bigger unicellular 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 .