What is a method of determining the concentration, activity, or effect of a change to a substance by testing its effect on a living organism and comparing this with the activity of an agreed standard?

Which of the following is TRUE in the event that off-duty paramedics provide advanced life-support interventions at an emergency scene?

A) They are protected by Good Samaritan laws in all states. B) It is permissible as long as they have valid certification or licensure in that state. C) They will be granted immunity from negligence as long as they follow the standard of care. D) They may be charged with practicing medicine without a license.

You arrive on the scene of a patient who is unconscious, with a history of diabetes mellitus. They present with very rapid, deep respirations that are known as:

A) Kussmaul's respirations. B) Biot's. C) Cheyne-Stokes. D) apneustic respirations.