fatty acid is to fat as glucose is to
starch
glycogen
cellulose
all
none..
To determine the correct answer, let's first understand the relationship between fatty acids and fats. Fatty acids are the building blocks of fats. When fatty acids combine with glycerol molecules through a process called esterification, they form fat molecules, also called triglycerides. Therefore, fatty acids are an essential component of fats.
Using the same logic, we can look at the options for glucose:
- Starch: Glucose molecules are the main components of starch. Starch is a polysaccharide made up of long chains of glucose molecules. Therefore, glucose can be related to starch, similar to how fatty acids are related to fats.
- Glycogen: Glycogen is another polysaccharide that serves as a storage form of glucose in animals, including humans. It is mainly stored in the liver and muscles and acts as a readily available source of energy. Hence, glucose can also be related to glycogen.
- Cellulose: Cellulose is a polysaccharide found in the cell walls of plants. While cellulose is composed of glucose molecules like starch and glycogen, the specific arrangement of glucose units in cellulose makes it indigestible for most animals, including humans. Hence, glucose cannot be directly related to cellulose.
Based on this analysis, the correct answer would be "all" since glucose is a component of both starch and glycogen.