Two different isotopes of the same element have : (true/false) - equal nuclear charges - similar radioactive decay properties - equal mass of an atom - different number of neutrons - equal mass of a nucleus

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.