We all need energy to function and we get this energy from the foods we eat. The most efficient way for cells to harvest energy stored in food is through cellular respiration, a catabolic pathway for the production of adenosine triphosphate (ATP). ATP, a high energy molecule, is expended by working cells.
An Apple a Day. The calories in a McIntosh apple depend on its size. According to the U.S. Department of Agriculture, a medium-sized apple with its skin has about 95 calories. Eating an unpeeled apple is moderately higher in calories than a peeled apple, but don't rush to peel your apple.
Ingredient specific calorie information from our recipes: 1  Calories In Large Apple Peach Berry Smoothie with added protein UNDER 250 cal (NOT A VEGAN FOOD) 237 calories, 1g fat, 40g carbs, 26g protein, 5g fiber.  Calories In Tim's Large Apple Crisp. 158 calories, 2g fat, 38g carbs, 1g protein, 4g fiber.