Why is it necessary to find the percent yield of a reaction

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

How are isotopes of the same element alike?

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?