All foods that we eat are made up of fats, carbohydrates and proteins. Carbohydrates are the primary fuel source. Fats supply fuel but fat is the substance our bodies use to store extra calories. Proteins are used to build and repair muscles, cells, etc.
Our bodies will use what it needs from the foods we eat. If we eat too much of any of these nutrients, the body can store them as fat. If the body needs energy, it can use any of them to make energy but prefers to use carbohydrates.
If we take in more protein than our bodies need, we can convert protein into energy or we can store it as fat. To do this, our bodies use extra water, which increases our chances of becoming dehydrated.
Vacuoles store materials such as water, salt, proteins, and carbohydrates.
stores water, salts, proteins, and carbohydrates
As fat is one
Carbohydrates, proteins and fatty acids
Lipids.
Lipids store more energy per gram than carbohydrates or proteins.
Proteins can be matabolized as energy, but are used to build bodily tissues (such as muscles) and form important metabolic compounds.Some types of proteins store energy, but the main energy storage molecule is carbohydrates.
Bears store excess calories as fat to get them through the winter hibernation when they do not feed.
Vacuoles
Vacuoles
Cats are carnivores thus rely mainly on protein diet. Cat also take in carbohydrates from plants but metabolize it differently from the dog. They store the excess in their body as fats rather than glycogen that is excess glucose. However; a dog's diet contain a lot of carbohydrates.
They store about the same amount of energy as carbohydrates, but are less likely to be broken down to make ATP.