According to cell theory, which of the following are made of cells? check all that apply.
flowers
rocks
blood
water
bacteria
sugar
skin

According to cell theory, flowers, blood, bacteria and skin are made of cells. The cell theory states that; All living organisms are made up of cells (unicellular or multicellular), the cell is the basic unit of life and cells come from pre-existing cells.  

Cells are the smallest and basic structural and functional unit of all living organism. Cells are usually microscopic and may be eukaryotic (cells with a true nucleus) or prokaryotic (cells that lacks a true nucleus).

Flowers are living organisms (plants) and are made of cells. Blood is a specialized body fluid that is composed of cells. Also, bacteria and skin are made of cells.

answer; i believe its (ovulation);