NURSING ANM AND GNM

Detailed explanation-1: -A calorie is the amount of energy in the form of heat that is required to heat one gram of water one degree Celsius. To measure the number of calories in a particular food substance, a certain amount of food is burned in a device called a calorimeter.

Detailed explanation-2: -The food and drinks we eat provide energy, which is measured in kilojoules. How much energy they provide depends on the amount of carbohydrate (sugars/starch), protein, fat and alcohol the food or drink contains, as well as the portion size.

Detailed explanation-3: -The “small calorie” or “g-calorie” is defined as the amount of heat required to raise the temperature of 1 g of water by 1°C with a temperature change from 14.5 to 15.5°C. The current US Dietary Reference Intakes define 1 cal as 4.186 J [2]. Some texts use the thermochemical calorie, 4.184 J.