- Biology Notes for UPSC IAS Prelims (Part II)
- Biology - Home
- Biology - Classification of Organisms
- Biology - Cell Division
- Biology - Virus
- Biology - Bacteria
- Biology - Fungi
- Biology - The Roots
- Biology - The Plant Stem
- Biology - The Plant Leaf
- Biology - The Flowers
- Biology - The Fruit
- Biology - Plant Diseases
- Biology - The Blood
- Biology - Blood Group
- Biology - Human Brain
- Biology - Skeleton System
- Biology - Endocrine System
- Biology - Endocrine Diseases
- Biology - Carbohydrate
- Biology - Proteins
- Biology - Fats
- Biology - Vitamins
- Biology - Minerals
- Biology - Genetic Terminology
- Organisms & their Chromosome Counts
- Biology - Viral Diseases
- Biology - Bacterial Diseases
- Branches of Biology
- Inventions & Discoveries in Biology
- Nobel Prize in Biology
- Biology Useful Resources
- Biology Part 2 - Online Quiz
- Biology Part 2 - Online Test
- Biology Part 2 - Quick Guide
- Biology - Useful Resources
- Biology - Discussion
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Biology - Carbohydrate
Consisting of oxygen (O), carbon (C), and hydrogen (H), carbohydrate is a biological molecule.
Carbohydrate is one of the essential elements for the living organisms, as it plays various important roles.
Carbohydrate is the main source of energy, as about two-third energy requirement of living beings is fulfilled by it.
Glucose, sugar, and starch are the important examples of carbohydrate.
Source of Carbohydrate
Carbohydrates naturally are occurring in wide variety of foods, such as −
Sugar that we eat in our everyday life is mainly sucrose (table sugar).
Sucrose is added in many food items while preparing, e.g. jam, biscuits, cakes, energy drinks, etc.
Further, many fruits naturally contain glucose and fructose.
Glycogen is another type of carbohydrate that found in the liver and muscle.
Cellulose found in the cell wall of plant cells is carbohydrate.
Types of Carbohydrate
The following table illustrates major categories and sub-categories of carbohydrate −
|Sugar||Monosaccharides||Glucose, fructose, xylose, galactose|
|Disaccharides||Sucrose, lactose, maltose, trehalose|
|Other oligosaccharides||Raffinose, stachyose, fructo-oligosaccharides|
|Polysaccharides||Starch||Amylose, amylopectin, modified starches|
|Non-starch polysaccharides||Cellulose, hemicellulose, pectins, hydrocolloids|
Functions of Carbohydrate
Following are the major functions of carbohydrates −
Carbohydrates provide energy required for the proper function of the body.
Carbohydrates also store food in the body for the contingency period.
Carbohydrates form nucleic acids.
Carbohydrates also support skeleton system of animals.
Carbohydrates provide sweetness and flavor.
Carbohydrates break down the fatty acid.