Essential carbohydrate that serves as an energetic substrate for many cells of the body. if a mutation affects the cell so that it can no longer absorb glucose, it will have no energy to live and function, so it will systematically die. It will not be able to transform itself into a cancerous cell because firstly it is not a mutation that disrupts the cellular cycle or the repair of its DNA, secondly, for a cell to turn into a cancerous cell, it will need a lot of glucose, gold is not possible in this case.
Since it will help the individual live longer, there is a greater chance that it will reproduce than those with lesser favorable traits. Thus the next generation will resemble the parents with the favorable triat more.
I don’t think it would change the effectiveness , if bees got used to it or it had always been like that, they wouldn’t have a problem, but if it was a sudden change then they might dislike it