No. That's false.
Calories from food are broken down into nutrients like glucose, which is then used as a primary energy source for cells through cellular respiration in the mitochondria. Cytosine is a nitrogenous base in DNA and RNA, not a direct source of energy for cells.
How is this kind of geological energy different from biological energy (such as the calories creatures get when they consume food)? How are they the same
Yes, "calories" are a measurement of energy that is contained in the food you consume.
carbohydrates are converted in to energy which is consume by body for its activity
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The law of conservation of energy states that energy cannot be created or destroyed, only transformed. When we eat food, we consume a certain amount of energy (calories) that is then used by our body for various functions. If we consume more calories than we expend, the excess is stored as fat, whereas if we consume fewer calories than we expend, we lose weight as our body uses stored energy.
Energy is transferred through a food chain as organisms consume other organisms. Primary producers, like plants, absorb energy from the sun through photosynthesis. Herbivores then consume plants, transferring the energy. Carnivores further transfer the energy by consuming herbivores. This process continues up the food chain, with each level of organisms consuming the energy stored in the organisms they consume.
Food contains calories. Calories are a type of food particle that a body consumes. Calories are also commonly known as energy used for the body. Since a saltine cracker is a kind of food with wheat; wheat contains calories which you consume. These calories are energy, so in other words, you are consuming energy.
In terrestrial environments, energy is transferred through the food chain. Producers (plants) convert sunlight into chemical energy through photosynthesis. This energy is then passed on to consumers (animals) as they eat the plants or other animals. Energy is continually transferred as organisms consume each other, with some energy lost as heat at each step.
When energy is transferred in an ecosystem, potential energy is lost as heat. As organisms consume food, energy is converted to fuel various life processes. This energy is then released as heat during cellular respiration, contributing to the overall entropy of the system.
The unit for measuring energy transferred is the joule (J). One joule is defined as the amount of energy transferred when a force of one newton moves an object one meter in the direction of the force. Other units of energy include calories and kilowatt-hours, which are commonly used in different contexts.
Hot bodies contain thermal energy, this is measured in calories or BTU