After seeing the attached picture represented above, it has become more clear and I think that the best explanation for why the onion cells do not burst, while red blood cells often do, is that t<span>he red blood cells have only a cell membrane, which does not protect them from bursting. The main point which makes difference between two parts of picture is that one of the cells has protective membrane.
Hope you will find it helpful.
Regards.</span>
Well, usually the qn would be what is different between a compound and a molecule. but if you ask like this then, here goes.
An element is the simplest substance that can not be broken down into its components using physical processes. exp: Na, S, K
A molecule is a substance that make up of an element bonded together.
exp: O2, S2, F2(diatomic molecules)
Yes it has both inner and outlier membrane
Carboxyl group + amino group + side chain. (https://www.coursehero.com/file/p628ngj/Question-3b-of-10-1-Proteins-560559-Maximum-Attempts-1-Question-Type-Multiple/)
Hope this helps