#1 would be A, #2 would be false, as narcotics are incredibly addictive. #3 is absolutely true, as abuse of almost any medical thing can be life threatening.
I believe the answer to your question will be atrioventricular but don't cross out pulmonary it could possibly be the answer.
GLYCOLYSIS is the step of cellular respiration that converts each of her glucose molecules into pyruvic acid.
Glycolysis is also the first step in cellular respiration. This happens inside the cytoplasm. During this process the glucose is broken down into 2 and becomes 2 pyruvic acid.
What is it you need help with on that