A 28 yo male presents for evaluation of severe left testicular pain and swelling that developed over the past two days.  Vital signs are unremarkable.  On exam, his left testicle is tender with normal lie.  His right testicle is unremarkable.  The scrotum is painful, edematous. Urinalysis shows 57 WBC/hpf and 14 RBC/hpf.  Which of the following is the most likely diagnosis?

Which membrane protein is present in every human cell?

Which statement describes water movement?  

Which of the following contributes to the repolarization phase of an action potential?  

translation occurs in ___

Which cavity is #4?

In each cycle, the action of Na+/K+ ATPase:

Hydrolysis of triglyceride:

Cell membrane is permeable to ___.

What describes the “disturbance” in a homeostatic loop?