Cucumbers, lettuce, celery, cantelope, watermelon and pickles are as close to calorie free foods as you can get. Most vegetables and fruit are also reasonably low in calories yet high in kealthy vitamins and minerals. Dr. Tow
To derive energy from food you must eat foods that contain
Calories are units of energy provided by food.
Food does NOT contain energy , it is converted to energy in the body as in calories
All types of food contain chemical energy.
Potatoes contain carbohydrates, which gives energy.
By breaking chemical bonds in the molecules
by breaking chemical bonds in the molecules
Euglenoids (or euglenians) store energy in a compound called paramylon. (At least, the photosynthetic forms do.)
On an ecological pyramid or in a food chain, typically, the highest trophic levels have the least amount of energy from the sun available for the next highest level. In a typical food chain, this would be the tertiary consumer level.
The plant and protist kingdoms contain organisms that can use energy from the sun to make food. The plant kingdom has over 260,000 species.
Tertiary consumers receive the least amount of energy from producers.
The decomposers at the bottom of the food chain have the least amount of energy because they rely on breaking down dead organic matter to obtain nutrients. These organisms play a vital role in recycling nutrients back into the ecosystem.