Questions: Question 3 2.5 pts Which of the following absorption terms describes a drug molecule that moves from an area of high concentration to an area of low concentration? Active transport Passive Transport Facilitative passive transport Pinocytosis

The answer is the second one: Passive Transport.

Explanation for each option:

1. Active transport: This process involves the movement of molecules across a cell membrane from an area of low concentration to an area of high concentration, typically requiring energy in the form of ATP. This is the opposite of what the question describes.

2. Passive Transport: This is the correct answer. It refers to the movement of molecules from an area of high concentration to an area of low concentration without the use of energy. This process occurs naturally due to the concentration gradient.

3. Facilitative passive transport: Also known as facilitated diffusion, this process involves the movement of molecules from an area of high concentration to an area of low concentration with the help of a carrier protein. While it is a type of passive transport, the question does not specify the involvement of carrier proteins, so the more general term "passive transport" is more appropriate.

4. Pinocytosis: This is a form of endocytosis where the cell engulfs liquid from the surrounding environment, which is not related to the movement of molecules from high to low concentration as described in the question.

In summary, the correct term for the movement of a drug molecule from an area of high concentration to an area of low concentration is Passive Transport.