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Why do fats and oils contain more chemical energy per gram than carbohydrates or protein?
Although lipids are composed of carbon (C), hydrogen (H) and oxygen (O), they contain relatively little water. The lack of water in the molecule means they carry much more energy per molecule than any other kind of compound found in either plants or animals.
One molecule of glycerol tristearate (a triglyceride with molecular weight 897.53 Daltons) generates 3 molecules of stearic acid (a fatty acid) and 1 molecule of glycerol. Each molecule of stearic acid undergoes beta-oxidation, Krebs cycle and electron transport chain to yield 135 ATP (theoretical efficiency, same below). Glyceol undergoes metabolism and generates 18 ATP. The total ATP yield for this lipid molecule is then 135 * 3 + 18 = 423 ATP or 0.47 mol ATP/gram. Glucose, with a molecular weight of 180.16, generates only 36 ATP, or 0.20 mol ATP/gram. Since polymeric carbohydrates are simply aggregates of simpler subunits, the efficiency of storage does not improve much more than monosaccharides.
the lipids contain more energy per gram because in a reaction, more reactions take place of bonds and releasing of bonds having more energy given off. Therefore you have more energy to do things.
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What is the value of carbohydrates?
If one is asking about the energy value of carbohydrates, the answer is that carbohydrates contain about four Calories per gram. This is about the same as the value for protein.
What provides most energy fat protein or carbohydrates?
Fats contain 9 calories per gram compared to 4 for both protein and carbohydrates.
What food would have the most chemical energy?
Lipids contain the greatest amount of chemical energy compared to carbohydrates and proteins. Per gram, lipids contain 9 calories, whereas carbohydrates and proteins contain 4 calories per gram.
Why do fatty foods have more chemical energy than healthy food?
Fat contains 9 kcal per gram, whereas carbohydrates and protein contain only 4.
What form of chemical energy do fruits and vegetables have?
Fruits and vegetables contain chemical energy in the form of carbohydrates, such as sugars and starches. When consumed, these carbohydrates are broken down during digestion to provide the body with energy in the form of glucose.
Why do peanuts carry energy?
Peanuts contain high levels of unsaturated fats, protein, and carbohydrates, all of which are sources of energy for the body when consumed. The fats in peanuts provide a concentrated form of energy, while the protein and carbohydrates are converted into energy during digestion and metabolism.
Which two types of nutrient provide most of the energy in your diet?
Protein and carbohydrates both contain 4 calories per gram and fats contain 9.2 calories per gram. If we are discussing fast energy transfer, simple carbohydrates and fats provide the most available energy
What nutrient is the main source of energy for the body?
Carbohydrates.
Would a diet higher in protein or carbohydrates give you more energy?
carbohydrates
How does fruit get energy?
The fruits contain chemical energy, stored primarily in carbohydrates. These carbohydrates are formed through photosynthesis, in which a plant uses the energy of sunlight to turn water and carbon dioxide into sugar and oxygen.
Does chicken give us energy or growth?
If you mean that by eating chicken, yes. This is because they contain protein and proteins are a source of energy like carbohydrates and are responsible for growth of cells.
How do carbohydrates and dietary protein work together?
carbohydrates and protein work together to maintain muscles. carbohydrates provide them with energy while protein helps in maintenance such as repairing tissues etc.
