What would be the most likely outcome if the lysosomes of a human cell stopped functioning? Protein synthesis would stop.
Protein transfer would stop.
Ribosomal RNA synthesis would stop.
Waste would build up in the cell.

Waste would start to build up in the cell since lysosomes have the role of intracellular digestion of waste materials.

A known disease that is caused by a lysosomal malfunction is Hunter's disease

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the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.