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Lipids contain carbon (C), hydrogen (H) and oxygen (O) but have less oxygen than carbohydrates. Examples of lipids in the diet include cooking oils such as sunflower and olive oil, butter, margarine and lard. Many nuts and seeds also contain a high proportion of lipids.
Triglycerides are one of the most common types of lipids. Triglyceride molecules are made up of glycerol and three fatty acids. The fatty acid tails are made up of many carbons joined together. The number of carbons in the fatty acid chains can differ.
When drawing organic molecules, it can easily get confusing writing out all of the 'C's and 'H's for carbon and hydrogen respectively. Scientists overcome this by drawing the carbon backbone, and leaving out the hydrogens. Carbon will always make 4 bonds with other atoms, so it is easy to figure out how many hydrogens there must be. The carbon is indicated by a point, and the bonds between carbon molecules are indicated by lines joining the points.
Titany answered the question on September 13, 2021 at 05:52
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