The correct answer is C. Muramic acid.
Cellulose is a polysaccharide that is the main component of plant cell walls. Glycogen is a polysaccharide that is the main storage form of glucose in animals. Pectin is a polysaccharide that is found in plant cell walls. Muramic acid is a component of peptidoglycan, which is the main component of the cell walls of bacteria and blue-green algae.
Cellulose is a long, chain-like molecule made up of glucose units. It is a very strong material that provides support and structure to plant cells. Glycogen is also a long, chain-like molecule made up of glucose units. However, it is branched, which makes it more compact than cellulose. Glycogen is the main storage form of glucose in animals. It is found in the liver and muscles, where it can be broken down to release glucose when needed. Pectin is a long, chain-like molecule made up of sugar acids. It is found in the cell walls of plants, where it helps to hold the cells together. Muramic acid is a short, chain-like molecule that is found in peptidoglycan. Peptidoglycan is a complex molecule that is made up of sugars and amino acids. It is the main component of the cell walls of bacteria and blue-green algae.