Definition of supposititious. 1  1a : fraudulently substituted : spuriousb of a child (1) : falsely presented as a genuine heir (2) : illegitimate. 2  2 [influenced in meaning by supposition] a : imaginaryb : of the nature of or based on a supposition : hypothetical.
Mitochondria-Mitochondria are oblong shaped organelles that are found in the cytoplasm of every eukaryotic cell. In the animal cell, they are the main power generators, converting oxygen and nutrients into energy.nimal cells are typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles.
Animal cell contains membrane bound nucleus, it also contains other membrane bound cellular organelles. These cellular organelles carry out specific functions that are necessary for the normal functioning of the cell.