Yes, the Mozzerella should be, the "cheese" needn't be.
It should not be capitalized except at the beginning of a sentence because it is not a proper noun.
Yes, Mozzarella should be capitalized.
Fontina should be capitalized but not cheese.
in the freezer
Yes it should be capitalized.
Every cheese can spoil.
In a fridge. It is best to be kept in the fridge.
It should have no blemishes and be very soft.
Yes. The only place you can substitute mozzarella cheese for American is on a cheesesteak.
Mozzarella.
No. Mozzarella is an Italian cheese.
No. that would be Oaxaca cheese which is similar to Mozzarella.