Help fill in the gaps The cathode is _. The anode is_. The reaction at the cathode takes place: _. The electrons move _ and the ions in the electrolyte bridge move _ to the right (ZnSO4 solution) and _ to the left. The copper-zinc element stops working when the solution has run out of _ ions and / or the _ electrode.

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.