Lipid

Biological Molecule - Lipid

A biomolecule or biological molecule is any molecule that is present in living organisms, including large macromolecules such as proteins, carbohydrates, and lipids.

Macro Molecule	Micro Molecule
Carbohydrates	Glucose
Protein	Amino Acid
Lipid	Glycerol  - Fatty acid

Lipid:

Lipids are one of the four major groups of organic molecules. Lipids include fats, steroids, phospholipids, and waxes. They are made up of one Glycerol and three fatty acid. One main characteristic of lipids is that they do not dissolve in water. Lipids play an important role in living organisms. Some of their main functions include energy storage, hormones, and cell membranes. Fats are composed of a glycerol molecule and three fatty acid molecules. Just like all lipids, fat molecules are made up of the elements carbon, hydrogen, and oxygen. Fat is used as energy storage in our bodies.

One of the most “haunting” and most search question in human life is “Are all fats bad?” No, as a matter of fact, fats are needed by our bodies to be healthy. We couldn't live without some fats in our diet. Most people need to get around 20%-30% of their food from fats. However, too much fat can be bad for you. It can cause you to be overweight and clog up your arteries. There are two main types of fats: saturated fats and unsaturated fats.

·    Saturated Fats - Saturated fats are solids at room temperature. These fats tend to come from foods like red meat, cheese, and butter. Saturated fats are sometimes called "bad" fats because they have been known to cause higher cholesterol, clog arteries, and even increase the risk for some cancers.

·         Unsaturated Fats - Unsaturated fats are liquids at room temperature. These fats tend to come from foods like nuts, vegetables, and fish. Unsaturated fats are considered much better for you than saturated fats and are sometimes called "good" fats.

Phospholipid

Phospholipids serve a major function in the cells of all organisms: they form the phospholipid membranes that surround the cell and intracellular organelles such as the mitochondria. The cell membrane is a fluid, semi-permeable bilayer that separates the cell's contents from the environment. The hydrophobic head act as the “filter” so that not all things that want to get inside the cell can come inside directly.