The energy produced by 1g of carbohydrate is:
Correct answer: B. 4.2 kcal
- A. 4.8 cal
- B. 4.2 kcal
- C. 9 joules
- D. 9.2 kcal
Explanation
Carbohydrates, proteins and fats in the foods provide energy for the body functions and physical activities. They, however, do not have same energy content. The following is the energy-content by respective nutrients:1 gram of carbohydrates- 4kcal1 gram of protein- 4 kcal1 gram of fats- 9 kcalSo, the correct answer is '4.2 kcal'
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Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.
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