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The Structure and function oflipids

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Introduction

The Structure and function of lipids Lipids are triglycerides, phospholipids and other related compounds. They contain Carbon, hydrogen and Oxygen, but have a higher ratio of hydrogen and oxygen than carbohydrates. And Lipids are more reduced than carbohydrates and are more readily oxidised when they are respired, and they therefore liberate twice as much energy per gram as carbohydrates and proteins. ...read more.

Middle

to a glycerol molecule. They are the biggest group of lipids and the energy store is found under the skin in adipose tissue. Fatty acids with double bonds in the hydrocarbon chain are unsaturated; others are saturated fatty acids. The phospholipid molecules have two fatty acid molecules and a phosphate group joined to glycerol. The molecules are polar and have polar heads and form bilayers in aqueous systems. ...read more.

Conclusion

They also have a low mass, which is useful in animals, and seeds, which are dispersed by wind ect. Lipids also provide protection and is good packing tissue and protects delicate organs e.g. Kidneys. Another function is waterproofing, and mammals produce oil called sebum (produced by the sebaceous glands) Birds also produce it to waterproof their feathers. Lipids are also good for buoyancy, as they are less dense than water and so are good for aquatic vertebrates e.g. whales and fish, who store oil in their livers. ...read more.

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