What is a limitation of Jillian's cell model?

Jillian made a model of an animal cell. She used a round

balloon to represent the cell membrane She pushed

objects like marbles and rocks into the balloon to show cell

parts, then filled it with water to show fluid inside the cell

It does not make up the tissues of a living thing,

It does not show the functions of the cell parts,

It is larger than a real animal cell,

It is more complex than a real animal cell.

It does not show the functions of the cell parts.

Explanation:

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?