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Which of the following molecular forms is stored energy in animals?
I. Glucose
II. Glycogen
III. Lipid
IV. Protein
(A)I and II
(B)II and III
(C)I, II, and III
(D)II, III, and III
(E)I, II, III, and IV

Last updated date: 13th Jun 2024
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Hint: The molecular form in which the energy is stored is a multibranched polysaccharide of glucose that serves as a form of energy storage and also the molecules that contain hydrocarbons and it will also make up the building blocks of the structure and function of living cells and is double in nonpolar solvents.

Complete answer:
Glycogen is a type of polysaccharide, made up of glucose that serves as a form of energy storage in animals, fungi, and bacteria. Lipids are the main form of energy reserve for the body. Lipids are stored within the body in several forms like triglycerides, fat cells, cell membranes, and lipoproteins. Any excess energy consumed is converted to triglycerides which alongside globules structure 90% of the fat cells.

Additional Information:
Fatty acid synthesis is regulated, in both i.e the plants and the animals. Excess carbohydrates and protein within the diet are converted into fat. Only a relatively bit of energy is stored in animals as glycogen or other carbohydrates, and therefore the level of glycogen is closely regulated. Protein storage doesn't happen in animals. Apart from the tiny amount that circulates within the cells, amino acids exist within the body only in muscle or other protein-containing tissues. If the animal or human needs specific amino acids, the amino acid needs to be either synthesized or obtained from the breakdown of muscle protein. adipose tissue is the main storage area for fats in animals.

So, the correct answer is ‘II and III’.

Note: Plants make oils for energy storage in seeds. Because plants will synthesize all of their cellular components from the simple inorganic compounds, plants—but usually not animals—can use fatty acids that are present in these oils to form carbohydrates and even also the amino acids for later growth after germination.