Animals store nutrients in the fatty areas of their bodies. The fats are stored carbohydrates that are more than currently needed so the body stores them in fat for use later.
Well, I'm not sure there is a really a "problem" with cellulose, but if you're talking about ingestion and digestion, it really depends on what animal you're talking about. Cellulose is a structural polysaccharide (sugar) that is found in the cell walls of plants. It contains beta 1-4 glycosidic linkages between glucose molecules that cannot be broken in the digestive tract of most animals. However, ruminant animals (cows, goats, sheep) have microorganisms in their gut that can break cellulose down using the enzyme cellulase and the cellulose can then be utilized by the animal. So, for most animals, cellulose cannot be broken down and used.
All animals obtain carbohydrates the same way we do, by eating plants: grain, roots and tubers, leaves, fruits, nuts.Except they don't turn them into bread and pie and french fries.
Humans are unable to get metabolic energy from cellulose because they lack the enzymes necessary to chemically break it down. Since the human body can't properly digest cellulose, it's passed in the feces.
Ants cannot digest cellulose. Termites can, but only because of symbiotic microorganisms in their digestive system. Termites are sometimes called white ants but they belong to a completely different insect order.
Starch and cellulose.
starch & cellulose
to convert water and carbon dioxide from the environment into glucose and oxygen
Plants store carbohydrates as sugars and starches...cellulose is also a complex structural sugar. Animals store glycogen (a type of complexed sugar) in the liver and muscles for fast energy and convert excess carbohydrate to fat.
Animals store carbohydrates as glycogen. Glycogen is a multibranched polysaccharide of glucose.
photosynthesis
carbohydrates have a chemical composition similar to cellulose; however, they are not polymers.
Carbohydrates
Lipids (fats) are heavier, more calorie dense and are not water soluble...which makes them a better candidate for storage in an animal system...fat is also a great insulator that helps maintain body temperature. Fat is also a better, more flexible for animals which need to move. Plants convert and store carbohydrates in the form of starch and cellulose. Cellulose is structural, not generally flexible...
Glycogen, another polymer of glucose, is the polysaccharide used by animals to store energy. Excess glucose is bonded together to form glycogen molecules, which the animal stores in the liver and muscle tissue as an "instant" source of energy. Glycogen The Glycogen Molecule
Cellulose.
Carbohydrates that are polymers include starch, cellulose and glycogen.