What structural parts do the bodies of unicellular and multicellular organisms consist of? Prove that the amoeba consisting of only one cell is ordinary and such a multicellular animal, like a grass frog, are independent organisms.
The similarity between unicellular and multicellular organisms is that they both consist of a cell. It has a similar chemical composition and a similar structure (organoids) in both representatives; in both of them, the cell divides during reproduction (two daughter cells are obtained from the mother), the metabolism and vital processes are similar.
These organisms differ in that in a unicellular (amoeba) cell, it performs all the functions necessary for life itself. That is, it provides breathing, nutrition, excretion, irritability, growth. In a multicellular organism (frog), cells by similar functions are combined into tissues, tissues into organs, and the organs themselves are interconnected by nervous and humoral regulation.
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