Q1. An assured drug that is used to control high blood pressure stimulates K+ excretion in the kidney such that plasma [K+] decreases from a normal value of 5 mM to 2.5 mM. Intracellular [K+] is largely unaffected. What effect this drug will have on the resting membrane potential of liver cells? Briefly explain your respond.

Q2. Assume that a particular radioactive element has a half-life of 1 year. If 1000.0 f g of the radioactive element are present in a sample today. How much will be in the sample after 10 years?