Tag: food and it's constituents

Carbohydrates are molecular compounds made from just three elements carbon, hydrogen and oxygen. Carbohydrates are one of the main types of nutrients. They are the most important source of energy for your body. Your digestive system changes carbohydrates into glucose (blood sugar). Your body uses this sugar for energy for your cells, tissues and organs. 

In animals fats, carbohydrates and proteins are responsible for generation of energy.
Proteins are metabolized by breaking down into individual amino acids by various enzymes and hydrochloric acid present in the gastro-intestinal tract which are further broken down to α-keto acids which can be recycled in the body for generation of energy, and production of glucose or fat or other amino acids.
Fats are the major contributor of the molicules like acetyl-CoA which is an integral part of Krebs cycle and generates energy.
Carbohydrates takes part in cellular process like glycolysis and leads to generation of energy.
Vitamins are not directly involved in generation of energy although they indirectly support the process of energy production.
So, the correct answer is option C.

Oligosaccharides are formed by joining together 2-9 monosaccharides molecules. For example maltose, sucrose, lactose.

All monosaccharides with six carbon atoms, resembling glucose, fructose, etc have an empirical formula of C$ _n$H$ _{2n}$O$ _n$. However, the molecular formula of Rhamnose is C$ _6$H$ _{12}$O$ _5$.

Glucose is a hexose sugar made up of six carbon atoms. Its general formula is $\displaystyle Cn{ H } _{ 2 }nOn$. It is utilized for energy production.

Cellulose is the most abundant carbohydrate, in fact, the most abundant organic compound in nature. It is the main structural polysaccharide of the plants. Thus option B is the correct answer.