How do the structures of starch, glycogen, and cellulose affect their function?

Starch refers to a polysaccharide found in various parts of the plants. In starch, the unbranched chain is wound into a tight coil that makes the molecule very compact. The chains of alpha-glucose are associated with glycosidic bonds. It is the prime energy source in various diets.  

The main function of starch is storing energy and due to its composition, it is well-suited for this function. Due to its compactness lots can be stored in a small space, it is insoluble so it does not diffuse out of the cells easily and does not influence osmosis. It gets hydrolyzed to alpha-glucose, which get transported easily and is used in respiration.  

Glycogen is identical to starch, however, comprise shorter chains and are more highly branched. It is stored in small granules in the liver and muscles. Due to smaller chains, they are easily hydrolyzed to alpha-glucose. It is suitable for storing purposes due to similar reasons like starch.  

Cellulose comprises beta glucose, not alpha. This small change has a big variation in the composition. In spite of coiling like starch, cellulose exhibit straight unbranched chains. These run parallel to each other, permitting hydrogen bond cross-linkages between the chains. The molecules of cellulose are aligned to produce microfibrils that are organized to produce fibers. The main function of cellulose is to provide rigidity to the cells and to inhibit bursting of the cells due to osmosis.  

The correct answer is (b) 2° F to 10° F

The prediction of scientist that the rise in global temperature is due to the rise in global warming. As a effect of global warming the glaciers are shrinking faster, plants and animal ranges has shifted, plants are flowering sooner. Many of the scientist predicted that if the amount of green house gas emission continues like this the rise in global temperature will increase up to a certain extent. The technology and industrialization is increasing day by day and then there are no chances that the effect of global warming can decrease it will keep on increasing and there will be a significant increase in temperature from 2° F to 10° F by 2100.