how is energy obtained from feed nutrients

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Respiration

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  • How do we get energy from food?

  • How do we get Energy from Food? Respiration is the process by which cells release energy from nutrients. In most cases the food has already been broken down to glucose and it is the glucose that is worked on by the cells to produce energy. There are two types of respiration:

  • How do calories in food give us energy?

  • Calories in food give us energy Food provides units of energy in the form of calories that give our bodies fuel to perform all functions from the most basic like breathing to more complicated activities. Energy comes from the macronutrients — carbohydrates, fat and protein — found in all foods.

  • What is the source of energy in a fuel cell?

  • This energy is derived from the chemical bond energyin food molecules, which thereby serve as fuel for cells. Sugars are particularly important fuel molecules, and they are oxidized in small steps to carbon dioxide (CO2) and water (Figure 2-69).

  • How is energy released from food in respiration?

  • In most cases the food has already been broken down to glucose and it is the glucose that is worked on by the cells to produce energy. There are two types of respiration: Anaerobic. In aerobic respiration energy is released with the use of oxygen.

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