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Explain why humans obtain limiting energy from eating lettuce?
As lettuce's molecular structure is mainly made up of water (H2O), humans are unable to obtain energy, nor vitamins and nutrients from that source of food. As well as being made up of mainly water, lettuce, is a plant of cellulase. Therefore, humans need a more adequate source of food to help the body maintain its energy levels
How many calories are in oxygen?
Oxygen does not contain calories because it is not a source of energy for the body.
Identify the primary source of energy for humans?
The primary source of energy for humans is food, which provides the body with essential nutrients and calories to power various bodily functions and activities. The body converts the energy from food into ATP (adenosine triphosphate) through metabolic processes, which is used for cellular energy.
Animals obtain their energy and carbon from what?
Animals obtain their energy and carbon from the food they ingest. Carbohydrates and protein are a good source of carbon and energy.
The main source of energy for humans is?
The Sun.
What nutrients provides long lasting energy and has 9 calories?
Fats contain 9 calories per gram and is a long lasting energy source.
How many calories does metal have?
Metal does not contain calories because it is an inorganic substance and not a source of energy like food.
What is the main source of energy in humans?
Food we eat.
What is the most abundant and least expensive source of calories in the human body?
The most abundant source of calories in the human body is glycogen, which is stored in the liver and muscles, while the least expensive source of calories is body fat, which is used as a reserve energy source.
What are in peanuts that make it contain energy?
Energy in all foods comes from calories, which are in starches, fats and proteins. Peanuts contain a high percentage of fat, which is the source of most of their calories, or energy.
What is the abundant energy source capable of being harnessed by humans?
Solar Energy
How does animals obtain energy?
Animals obtain energy by what they eat. It is all a big cycle, the sun(main source of energy) gives energy to the grass which gives energy to the cow, though in smaller amounts.
