Gland
that the animal once had a use for that structure depending on where it lived. or that it decended from an animal that had that structure and used it.
An insect is a type of animal. Any structure on an insect is, by definition, a structure on an animal.
The nucleus
Cell membranes are found surrounding both plant and animal cells
If by structure you mean organelles, then ribosomes.
The smallest structure within an animal is a cell. There are, in some cells, many smaller organelles and other structures.
Gland
no
This is similarity in structure of both animal and plant cell:Both plant and animal cell have a nucleusBoth have a cell membraneBoth have a cytoplasmBoth plant and animal cell contain ribosomes
i do not know??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? The Australian wombat created an animal made structure large enough to be viewed from space.
animal cells, if you dont believe me
It is the part that controls both animal and plant cells