I suppose that the majority of the cheesecake does not consist of eukaryotic cells, but there are definitely plenty of them in there. I’ve never looked at milk under a microscope but I would expect it to contain cells from the cow. The lemon zest contains lemon cells. The graham cracker crust contains wheat. Dead cells would not be much simpler than living cells.
I suppose that the majority of the cheesecake does not consist of eukaryotic cells, but there are definitely plenty of them in there. I’ve never looked at milk under a microscope but I would expect it to contain cells from the cow. The lemon zest contains lemon cells. The graham cracker crust contains wheat. Dead cells would not be much simpler than living cells.