Spread spectrum. In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g., an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth.
Lipids are one of the four major groups of organic molecules; the other three being proteins, nucleic acids (DNA), and carbohydrates (sugars). Lipids are made up of the same elements as carbohydrates: carbon, hydrogen, and oxygen.
protein is composed of amino acids that are important for life functions lipids are composed of fats oils phospholipids steroids and waxes carbohydrates are large organic molecules made from carbon oxygen and hydrogen figure 1 sickle shaped red blood cells are the result of a single base change mutation