Animal cells have a centrosome and lysosomes, whereas plant cells do not.
D- Physical
Explanation:
A physical property is anything that has characteristics associated with a change in it's chemical composition
Number of protons as stated in the question = 92.
a. 92
Because you are never adding more than the substances created, nor are you creating any, but should a chemical reaction take place you could see the liquid change form into a gaseous state and that would result a loss of the liquid volume.
So to wrap it all up you can’t have more liquids than what is already there but you could always lose some due to a chemical change, hence the reason it says an open flask, the chemical change would not be collected, mass would be lost