Which type of drug transportation into the cell does NOT require the cell to expend energy?

The two factors that refer to the rate of change of speed are:

A) deceleration and velocity. B) mass and weight. C) acceleration and deceleration. D) acceleration and inertia.

What is the major challenge of ultrathin bronchoscopy?

a. Bronchoscopy kinking during procedure b. The equipment is expensive c. Issues with CT guidance equipment d. Maintaining proper anatomical orientation in the peripheral airways