What Is the Difference Between an Analog and Digital Signal

question 35

Essay

What is the difference between an analog and digital signal? Provide an example of each signal type.

---

Definitions:

Ducts

Tubes, channels, or passages in the body or in a machine that convey fluid or air from one location to another.

Interstitial Fluid

Fluid that surrounds the body’s cells; consists of dissolved substances that leave the blood capillaries by filtration and diffusion.

Metabolism

The set of life-sustaining chemical reactions in organisms to convert food into energy, and build or maintain their cells.

First Messenger

Chemical signal, such as a peptide hormone, that binds to a plasma membrane receptor protein and alters the metabolism of a cell because a second messenger is activated.