Difference between lipids and carbohydrates with respect to energy use and storage?

Answer 1

Carbohydrates,such as sugars, mix quickly with water and stay in solution for a long time. Other carbohydrates (starches) take a little longer to go into solution and don't remain in solution as long. Both are available for cells to use because they do go into solution easily. Lipids don't go into solution with water easily(think vegetable oil and water) so they are used last by cells in the body for energy. This results in them being stored. When no sugars or starches are available for the body to use as energy sources, the lipid energy which has been stored in the body is used. That's why people who eat few or no carbohydrates lose weight. The energy that has been stored by the body is used.

Answer 2

Energy ContentBoth carbohydrates and lipids serve as sources of energy, but these compounds contain different capacities for energy storage. Each gram of carbohydrates stores 4 calories of energy, whereas each gram of lipid stores 9 calories. As a result, lipids serve as a more compact way to store energy, since it contains more energy per gram than carbohydrates. As a result, your body tends to use fat to store energy over long periods of time and uses carbohydrates to store energy short-term. Forms of StorageIn general, your body stores lipids in the form of triglycerides. Each triglyceride contains three fatty acid compounds, all bound to a glycerol chemical backbone. Most trigylcerides are stored within adipose tissue, made up of fat cells distributed throughout your body, though your blood also contains small amounts of tryiglycerides. Carbohydrates in your body are stored as glycogen, a large carbohydrate molecule made up of hundreds or thousands of smaller units of glucose, a simple sugar. Your body can also convert carbohydrates into fat for long-term energy storage.

Answer 3

Carbohydrates are short term and lipids are long-term

Answer 4

Energy is stored in their bonds. These molecules can have long chains so much energy can be stored within the bonds of the molecules.