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.
There are 3 main types of lipids. a. Neutral fats - make up adipose tissue in our bodies and functions as long term energy storage, insulates and protects. The unit molecules or monomers that make up neutral fats are fatty acids and glycerol. Neutral fats are composed of one glycerol molecule and 3 fatty acid chains. The diagram below shows the reaction that results in the formation of a neutral fat. X is glycerol, and Y represents the 3 fatty acid molecules.