Biology, asked by jerry7776, 11 months ago

Elaborate the role of protein ,fat,carbohydrates in food.​

Answers

Answered by rizma
6

Answer:

Proteins

Proteins are large, complex molecules composed of smaller building units called amino acids, attached to each other in long chains. There are many different types of proteins in our body and their functions vary. They can act as antibodies, enzymes, signal transmitters, transporters or structural components in our cells. Our bodies can manufacture most of the amino acids necessary to make proteins themselves. However, there are nine essential amino acids that can only be obtained from the food we eat. Meat, fish, poultry, eggs and dairy products are all concentrated sources of protein. Proteins are also present in many plants, but in order to get all the essential amino acids from plants, certain varieties must be eaten in combination with others, such as rice served with beans.

Carbohydrates

Carbohydrates are the body’s main source of energy. Depending on their chemical structure, they come in two forms, simple and complex. Carbohydrates are in the digestive tract broken down into glucose (simple sugar), which is used as a source of energy to fuel cells, organs and tissues. The glycemic index is used to classify carbohydrates according to their potential to raise your blood sugar (glucose) level. In general, simple carbohydrates have a high glycemic index, while complex carbohydrates, which break down more slowly in the digestive system, release glucose (blood sugar) more gradually into the bloodstream and thus tend to have a low glycemic index.

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Fats

The fats are compounds consisting of fatty acids linked to an alcohol via an ester bond. The major form of fats present in our bodies and food are triglycerides. When fats are broken down and transported in the bloodstream, they are called free fatty acids. They fulfil many crucial functions in our body such as acting as messengers, helping proteins to do their job and starting chemical reactions that help control growth, reproduction, immune function, etc. Free fatty acids that float through the bloodstream supply back-up energy for the body and help to produce compounds that regulate blood clotting, blood pressure and inflammation. Riding in the free fatty acids are the fat-soluble vitamins A, D, E and K, traveling through the body to perform their own vital roles. In today’s Western world it is practically impossible to develop a fat deficiency.

Explanation:

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