Nitrogen- major part of chlorophyll in plants, which absorbs light energy for the process of photosynthesis.
Magnesium-maintains normal muscle and nerve function.
Calcium-building strong bones and teeth.
The correct option is this: BREAKING CARBON BONDS RELEASE ENERGY THAT ORGANISMS USE FOR LIFE PROCESSES.
The food that are eaten by living organisms are composed of carbon element which bond in various ways with other elements. Chemical energy are stored inside this bonds and released for the organisms use when they are broken.
Answer:
Food is necessary to digest because food we eat is made of macromolecules.
Explanation: Macromolecules such as carbohydrates, proteins and lipids which are made of many small molecules i. e. glucose, amino acid and fatty acid respectively. Our body absorb food in the form of glucose, amino acid and fatty acid so it is necessary that the food is broken down into these small molecules.
A carbohydrate will provide 4 kcal/g, protein also 4kcal/g, but fat is 9 kcal/g. In this case, there are 28g carbohydrates, 2.7g protein, and 0.3g fat. Counting it separately, it will be:
Carbohydrate: 28g * 4kcal/g = 112kcal
Protein : 2.7g * 4kcal/g = 10,8 kcal
Fat : 0.3 * 9kcal/g = 2.7 kcal
Total calorie= 112+10.8+2.7= 125.5 kcal
