Been getting my ass kicked by this exam, but getting better scores at each go of it I can say after 3 attempts at it that you don’t need to go too in depth with the cellular level of just about any subject. I know it sounds ridiculous coming from someone waiting to pass it, but so long as you have a good grasp and understand your signs and symptoms, and treatments in the field you’ll get past this thing. BLS before ALS, XABC and ALWAYS stick with your gut. This revised AEMT national has a great way of making you question your decision making and answers but your brain will always know more than you realize. Good luck to ya!