What part of a cell acts as a protective covering?

A patient has been pulled from a house fire. Assessment reveals him to be lethargic with stridorous respirations and a rapid but strong radial pulse. Firefighters are dousing his body with water to cool him. What action would the EMT perform immediately?

A) Determine if critical areas of the body have been burned. B) Administer oxygen through a nonrebreather face mask and obtain a full set of vitals. C) Begin removing the patient's clothes to determine the type of burn. D) Provide positive pressure ventilation with a bag-valve mask.

How many DRB genes exist in the human population?

a. 1 b. 5 c. 9 d. 10