Tolerance Definition and 54 Threads

We're studying cell signaling and signal transduction in my biology class, and we discussed this briefly in class but I don't really understand it. Why does the affect of a drug decrease the more a person uses it? I don't understand. If someone takes a drug more, wouldn't there be more of the...

I have noticed that on days 28-4 my memory is awful. I have also noticed that during this period if I consume alcohol, I seem become intoxicated rapidly, and forget things much more than I normally would drinking the same amount. I tried to look at charts, but could not really work out a reason...

If there were 2 wires, and one of the wire has a resistance of 50 Ohms with a tolerance of 5%, while the second wire has a resistance of 60 Ohms with a tolerance of 3%. The total resistance would be 110 Ohms but what about the total tolerance? Would it be 8%?

If there were 2 wires, and one of the wire has a resistance of 50 Ohms with a tolerance of 5%, while the second wire has a resistance of 60 Ohms with a tolerance of 3%. The total resistance would be 110 Ohms but what about the total tolerance? Would it be 8%?