Schwann's cell theory basically states that: a) cells are the building blocks of living things. b) cells require oxygen. c) cells are made of atoms and molecules. d) cells require nutrients.
option a. Cell principle become proposed via way of means of a German botanist, Matthias Schleiden and English zoologist, Theodor Schwann withinside the yr 1839. The mobileular concept states which might be as follows: 1) Cells are the constructing blocks of residing organisms. 2) All dwelling organisms are composed of cells and a mobileular is the primary structural and useful unit 3) All cells stand up from pre-present cells. So, consistent with the mobileular idea, all residing beings are made from cells and cells are the fundamental structural gadgets of residing beings.
