What Are the Chemical Weapons Involved in the First Line

question 1

Multiple Choice

What are the chemical weapons involved in the first line of defense?

• A) Oil and sweat glands within the skin
• B) Mucus in the respiratory tract
• C) Saliva and digestive enzymes
• D) All of these are correct.

---

Definitions:

Concentration Gradient

The gradual difference in the concentration of solutes in a solution between two regions.

Active Transport

The movement of substances across cell membranes against a concentration gradient, requiring energy input typically from ATP.

Diffusion

The process by which molecules move from an area of higher concentration to an area of lower concentration, contributing to the movement of substances within and between cells.

Osmotic Pressure

The pressure that needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.