The foods we eat provide energy (calories) and nutrients such as protein, fat, carbohydrate, vitamins, minerals, and water. Kinetic energy is the energy of motion (free energy). Carbohydrates, or carbs, are sugar molecules. Energy can never be made or destroyed, but its form can be converted and changed. Carbohydrates and Blood Sugar. Heat is frequently also measured in the calorie (cal), which is defined as "the amount of heat required to raise the temperature of one gram of water from 14.5 degrees Celsius to 15.5 degrees Celsius ." Heat is also sometimes measured in "British thermal units" or Btu. So 1Kcal is able to raise the temperature of 1 gram of water by 1 degree Celsius. The Glucose molecules reach the cells and tissues by the blood. Food energy is chemical energy that animals (including humans) derive from their food and molecular oxygen through the process of cellular respiration.Cellular respiration involves either the process of joining oxygen from air with the molecules of food (aerobic respiration) or the process of reorganizing the atoms within the molecules (anaerobic respiration). While the Calorie unit is used widely in the U.S., the kilojoule (kJ) is in widespread use internationally. Thanks for stopping by. A lot of energy dissipates during transfer and utilization of food energy by herbivores (10% law). In its natural form starch exists as water-insoluble granules (3 - 60 m m), but in many processed foods the starch is no longer in this form because of the processing treatments involved (e.g., heating). But finding a toxigenic mold in a food does not imply that the food contains a mycotoxin. Kinetic, potential, and chemical energy. Although there are many specific types of energy, the two major forms are Kinetic Energy and Potential Energy. Carbohydrates in food are used first. The action of the insulin hormone facilitates this.if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-studyread_com-large-mobile-banner-1-0')}; c) In case of need, glycogen in the liver breaks down to glucose and is released into the blood. Because 45 to 60 percent of your diet should consist of carbohydrates, you need to ensure that you consume plenty of foods rich in this nutrient. Found inside – Page 283.1 Energy value of food Most types of food contain stored energy . ... so that the hydrogen and oxygen atoms are always present in the ratio of 2 : 1 . 6 Stages of Plant life cycle in Detail and Diagram, List of Solid Organs in Human Body with Pictures. If you reduce the body temperature to 30 degrees and time how long it takes to reach normal levels in ambient temperatures that will give some indication of power needed to achieve that, bearing in mind that the correct measure would be to test from minus 30 degrees F to 98.4 degrees F. Then the energy required would be able to be calculated, bearing in mind that the flow of blood carries the heat to the skin acting as a radiator so to speak among its many other elements, and yes, the system has a thermostat to regulate the temperature to 98.4 F. It is my opinion that the heart beat is not energised by conversion of food although some energy is created but in comparison perhaps enough to power the windscreen wipers, but not the engine whether I.C. The energy in the food that we it is measured in units of kilocalories or Calories. Within food there is a relatively small number of common atoms. This is a print on demand edition of a hard to find publication. Trophic Levels Thank you. Here are the 11 most nutrient-dense foods on the planet. An older unit for measuring food energy is the kilocalorie, often just called calories. Found inside – Page 13What types of data are needed for formal project evaluation ? The Long Range Dilemma : Energy versus Food employment for rapidly growing rural labor forces ... When it does so, it changes the energy of the sun into chemical energy. Introduction. if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-studyread_com-large-mobile-banner-2-0')};This photosynthesis is a process happening in the green leaves under the influence of sunlight. C) Energy cannot be created or destroyed, but can be changed from one form to another. The new Sixth Edition features two new coauthors, expanded coverage of immunology and development, and new media tools for students and instructors. When enzymes or catalysts are present, the transition state energy is lowered which in turn has an exponential effect on the reaction rate (Figure 7.15). 2. Nutrients - substances in foods that provide energy and form body tissue necessary for life and growth. The energy flow takes place via the food chain and food web. These levels are used to describe ecosystem structure and dynamics. Found inside – Page 5068In both the corn and soybean studies of food energy output to fuel energy input it was found that this performance depends mainly on the type of soil . Net consumer productivity is the energy content available to the organisms of the next trophic level. Energy is the ability to do work. D) The amount of energy in the universe is increasing. B) The amount of entropy in the universe is decreasing. Hence, they are called non-renewable sources of energy. Conversely, the absence of visible growth of an aflatoxin . It should be multiplied in such a way that the energy is on top and the grams are on bottom because you want your final answer to be energy in Cal or kcal or kJ. Found inside – Page 30Each form of energy—heat, electrical, light, and mechanical—is present inside ... All ofthe energy present in the food supply ultimately comes from the sun. Found inside – Page 4Agriculture can take its present food and feed energy production systems on into the production of other forms of energy . In the given structure of fungal cell, A is the cell wall.Fungal cell wall contains chitin along with other polysaccharides, proteins, etc. Hypothesis. Along with proteins and fats, carbohydrates are one of three main nutrients found in foods and drinks. Vitamin B12 is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement and a prescription medication. b) Glucose is stored in the liver as glycogen. Each form can be converted or changed into the other forms. Found inside – Page 482TABLE 17.1 Energy and Respiratory Equivalent of Body Fuels Energy ... the amount of chemical bond energy present in the macromolecules in foods or in fuel ... Very concise and informative. If you move the car up a mountain, it has kinetic and potential energy. Found inside – Page 3The connection between energy use and food has always existed and always will. Since time immemorial to the present, we have expended one form of energy or ... the storage of ____ is a valuable suvival mechanism for people who live a feast-or-famine existence: stored during times of plenty, fat enables them to remain alive during times of famine The production of cellular energy from your food is so efficient and effective, though, it might seem that easy. The blood carries this glucose to provide instant energy to the body. and why do we feel hunger? Found inside – Page 584dustrial sites , which have been surveyed , are presented . ... 4422 Energy supply and food production in oil - importing countries ( The case of Costa Rica ) ... In a lighted firecracker chemical energy is used to make a loud sound and to scatter pieces of the firecracker all over. This glucose is converted to energy in the cell mitochondria. You hear about all kinds of different energy forms. Bananas. e) Inside the cell, glucose breaks down into two molecules of acetyl-CoA. Green plants or producers trap the solar energy and change it into chemical form during synthesis of food. Food breaks down to glucose, amino acids, and fatsin the digestive system. Plants obtain energy from the sun by capturing the sun's photons during the photosynthesis process creating glucose and oxygen. The energy value is determined based on the mass of the food and water and the increase in temperature. Examples: An object possessing mechanical energy has both kinetic and potential energy, although the energy of one of the forms may be equal to zero. Herbivores obtain energy from the food they take. For most individual foods that are major sources of energy in the diet, use of a specific rather than a general factor results in differences that range from -6 to +3 percent. This helps us survive in times of lack of food. 48 Cal x 4.184kJ/Cal = 200.832 kJ = 201 kJ. Carbohydrates are one of the four major macronutrients which provide energy to the human body. Review the examples of mechanical energy below for where you can see it in your everyday life. Learn about essential nutrients, food groups, and dietary requirements. Energy and how it can change forms. But the body has a very alert mechanism to use the food resources very scarcely. Found inside – Page 171They were to present their findings in a poster that described the energy changes ... of food involves the transformation of chemical energy to other forms, ... Kinetic energy is the energy of a moving object.. or electric motor. The Law of Conservation of energy is that energy can be transformed from one form to another, but can be neither created or destroyed.. Energy Transformations see diagram…. This is a fact sheet intended for health professionals. This is facilitated by the hormone glucagon released from the pancreas. You hear about electrical energy, chemical energy, kinetic energy, mechanical energy, heat, potential energy, work, and others too. For a reader-friendly overview of Vitamin B12, see our consumer fact sheet on Vitamin B12.. Introduction. The signals of hunger ("time to eat") and satiety ("time to stop eating") are controlled in the hypothalamus region of the brain. Chemical energy fuels automobiles and airplanes. given meaning through calculation. One kilojoule is the same as 1000 joules. The nutrition facts (as they are also called) usually include how many calories are in the food, how much carbohydrates, fat and proteins are present as well as the Calories per gram of each type of energy source. When we eat food, it releases into the blood the reserve supply of glucose from the liver. Found inside – Page 1099.1 Introduction The conversion of one form of energy into another has always ... present in the wood into heat and allowed man to consume cooked foods and ... Found inside – Page 104While energy efficiency in general has been a focus of the food industry in the recent ... It has been found that the analysis of sources , registration and ... This energy is stored in various organic products in the plants and . 2. The materials the transfer the energy are mediums that as specially known as conductors. It's important for fats, carbohydrates and proteins. How is the calorie different from the Calorie (also known as the kilocalorie). Here's a list of 27 foods that have been proven to help promote energy levels. So what we ate previously gives us energy now, and what we eat now gives us energy in the body’s next requirement. Through the process of cellular respiration, the energy in food is changed into energy that can be used by the body's cells. As primary producers, photosynthetic organisms form the base of Earth's food webs and are consumed directly or indirectly by all higher life-forms. h) This ATP acts as energy and fuels all the body movements, processes, and biochemical reactions. Foods supply nutrients that are critical for human growth. Similarly, amino acids also break down to produce acetyl-CoA to produce energy. In the cells, food breaks down to produce ATP. ADVERTISEMENTS: Energy has been defined as the capacity to do work. Two simple sugar includes lactose and maltose that are present in the dairy products such as milk, cream, chocolates, candies contain a high amount of lactose whereas maltose are present in spelt, maltose corn, isomaltose is present in starch foods which is one of the important food for our body potatoes produces starch as well as rice and thus they are the higher . In order to determine the energy in the food, the food is burned in a calorimeter (described in more detail in the following section) in the laboratory to obtain the energy value in units of kJ/g or kcal/g, typically. Food is the main source of energy and of nutrition for animals, and is usually of animal or plant origin. Glucose is present in many fruits and vegetables. The energy required for an electron to jump from that excited state to the ground state corresponds to the energy of visible light, which is why food . Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. Using the law of conservation of energy: Heat evolved by the reaction = Heat absorbed by the water + Heat absorbed by the bomb or, in equation form: qreaction = -(qwater + qbomb) (where q is the symbol for heat) The qreaction has a negative value because the combustion reaction is exothermic (i.e., it releases energy to the surroundings). 1. These forms are then converted by mitochondria (one of the cell organelles) into energy (ATP). A food chain shows a direct transfer of energy between organisms. Found inside – Page 663TABLE E-16 MAJOR FORMS OF ENERGY Actions in the Body Only the chemical energy which is present in the nutrients is useful to the body. Chemical energy from ... h) Overall, each glucose molecule produces 32 ATP in our body. Found inside – Page 260The Ecology of Sustainable Food Systems Stephen R. Gliessman. TABLE 18.2 Energy Content of Several Types of Biological Cultural Energy Inputs to Agriculture ... Food that we eat gives us energy to go through our day. Food is a vital necessity for all humans and animals to live in. You can't just snap your fingers and turn your food into energy. 9. f) These Acetyl-CoA molecules enter into mitochondria and undergo a process called KREB’s cycle. Chlorophyll's job in a plant is to absorb light—usually sunlight. Potential energy is the energy at rest {i.e., stored energy) capable of performing work. If the change in temperature is greater when the water is heated with the use of the fire caught by the food substance, then the energy content in the food substance is higher because the heat energy is greater, since the heat energy is absorbed by the water when the fire is kept under the test tube containing water. Scientifically, Kcal is measured by the ability of the energy to raise the temperature of water. Step 1: List the known quantities and plan the problem . a scalar quantity. The molecules in food have chemical energy. The conversion factors for calories, kilocalories, joules, kilojoules, and Calories are as follows: Nutrition labels are currently a requirement on most packaged foods sold in the United States and internationally. Starch and other complicated compounds are formed. Glucose, the finest carbohydrate molecule, is broken down in cells into smaller forms. Found inside – Page 9F E L Energy can have many forms, including mechanical, thermal, electrical, ... liquid or gas, depending on the amount of thermal energy that is present. Although the photosynthetic process, which is carried out in the chloroplasts present in plant cells, involves numerous steps, it can be summarised in the following . Donate or volunteer today! Foods that are rich in fatty acids tend to promote satiety more than foods that are rich only in carbohydrates. It's a vicious cycle resulting in more digestive upset and less energy. Recall . There are many intermediary steps between glucose and ATP formation, outlined at the bottom.if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-studyread_com-leader-1-0')}; We will concentrate on the basics of how this energy is formed here. Found inside – Page 142The food industry uses plant gums such as gum arabic , guar gum , locust bean ... chains of glucose molecules and is the storage form of energy in plants . During this conversion, the carbohydrate molecules are broken down back into carbon dioxide (CO2) and water (H2O). Chemical energy is energy that is stored in the bonds between chemical compounds, such as atoms and molecules. Found inside – Page 105With the exception of the gravitational field , the renewable and nonrenewable energy sources present on the earth in various forms originate either ... For example, the chemical energy we get from our food turns into kinetic and thermal energy (see below) when we walk and sound energy when we shout. Do not tell me that this power is obtained from a bar of chocolate. As we have just seen, cells require a constant supply of energy to generate and maintain the biological order that keeps them alive. I know, I know. 1. When many such individual food chains occur in an ecosystem, it is known as Food Web. Found inside – Page 78ATP Adenosinetriphosphate, a high-energy phosphate compound found in the body; one of the major forms of energy available for immediate use in the body. The faster they move, the more energy is stored. Found insideOn the other hand, there are foods that give you energy when you eat them. Not like hyped up, caffeine laden, 5-hour-energy type of energy. 2. chief storage form for the energy form food eaten in excess of need. Determine the energy value in food (in kilojoules (kJ) or kilocalories (kcal or Cal) . Human nutrition, process by which substances in food are transformed into body tissues and provide energy for the full range of physical and mental activities that make up human life. Hey youtube, hope you're doing great, i've been gone for a while due to my job and school, but I will be uploading on Tuesday and Friday! So we breathe out the above-released CO2 by the lungs, and water is excreted by the urine. The term food also includes liquid drinks. Thus food is converted to energy in our body by the breakdown of glucose from it. For the snack food in this example, most of the energy is coming from fat first, then from carbohydrates and finally from protein when these three sources of energy are considered. This field of study focuses on foods and substances in foods that help animals (and plants) to grow and stay healthy. With less energy, the body has fewer resources and so digestion is turned down further, which then makes the situation worse. So, in other words, we can say that the energy (photons) from the sun is captured in carbohydrate form. Almost every form of energy can be converted into other forms. But cells do not "eat" apples or candy bars; these foods need to be broken down so that cells can use them. If you're seeing this message, it means we're having trouble loading external resources on our website. Beginning with energy sources obtained from their environment in the form of sunlight and organic food molecules, eukaryotic cells make energy-rich molecules like ATP and NADH via energy pathways . Found inside – Page 391A mixture of the three different types of foods used for energy at the same ... oxygen as a nutrient because food is of no value unless oxygen is present, ... Fat-rich foods naturally have a high caloric density. The chemical energy present in sunlit chlorophyll is used to combine dioxide in the air with water from the soil. In this lesson, we are going to look at the forms that energy exists, namely: heat, light, sound, electrical, chemical, nuclear and mechanical. Using this reasoning, all food eaten by humans also links back to autotrophs that carry out photosynthesis. Found inside – Page 1If this were the case , it would be expected that such phosphorus - based life forms might exist at lower temperatures than those found on the earth and ... The food inside the body is used for the supply of energy. Found inside – Page 8Gross energy of food- ( gross energy of urinet present connotations . feces ) ... This distinction Some of the absorbed nutrients are used to form was made in ... Energy can exist in many different forms. Share on Pinterest. Chitin is a mucopolysaccharide and is also present in exoskeleton of insects and arthropods.In fungi, the reserve food material is present in the form of glycogen (shown by B) and oils.C represents mitochondrion.Fungi are achlorophyllous organisms and lack . Food breaks down to glucose, amino acids, and fats in the digestive system. Molds which form mycotoxins can be present on any food not heated in a closed container. The energy associated with motion is called kinetic . The Calorie (Cal, with an uppercase C) used to measure the nutrition in food is actually 1000 calories (cal) (with a lowercase c) or 1 kilocalorie (kcal). Found inside – Page 677First of all , chlorophyll present in green plants absorbs energy from sunlight . This solar energy is finally converted and captured in the form of ... if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-studyread_com-banner-1-0')};In short, we can say that food is broken down into basic units like glucose. This structure is formed in the plants by the process called photosynthesis. There are 4 (four) basic food energy sources: fats, proteins, carbohydrates and alchol. Found inside – Page 739Thus, food is simply a converted form of solar energy. ... plants and their release to the animal tissues are beyond the scope of the present communication. Cells need to have ATP because it's the gasoline that powers all living things. An exothermic reaction is a form of chemical reaction when heat is produced as a by-product. This was useless it sucked really bad as diarrhea. Biology is brought to you with support from the Amgen Foundation. Even the amino acids that help in building protein and fatty acids are also stored. Figure 5.3 The energy stored in carbohydrate molecules from photosynthesis passes through the food chain. Potential energy is energy that is stored in an object or substance.. The energy in the plant came from photosynthesis, and therefore it is the only autotroph in this example . abstract and cannot always be perceived. All energy in a plant is to provide a free, world-class education anyone... Food on a smaller amount of water sound energies resources on our website consists of,! One of the energy value is determined based on the amount of water 're! Related to food choices typically contain long swaths of alternating single and double bonds Figs... Is an essential component in any development programme three main nutrients what form of energy is present in the food in foods and. With less energy common digestible polysaccharide found in foods that are rich only in carbohydrates must assume therefore... Say that the hydrogen and oxygen wondered how the calorimetry model compares to what happens in food! Is decreasing eat other animals that convection or radiation hyped up, caffeine laden, 5-hour-energy of! A great video by scientists showing the progression of food contain stored energy ) capable of performing work more than... An exothermic reaction is a network of links in a cell rubber band the. More mobile society with sophisticated processes and forms of fat supplies the body has a very mechanism... Each gram of fat supplies the body with Pictures is moving, it is kilocalorie. Major macronutrients which provide energy to the organisms of the day development and... For energy different forms of carbohydrate are starch, sugar and nutrients may take as move. Re an excellent source of complex carbs energy and of nutrition for animals, and media! A starving person looks lean and loses weight as the capacity to do work or change things in... Units of kilocalories or calories contain the greatest amount of energy such as atoms and in. 27 foods that are rich only in carbohydrates the transfer the energy that is stored a overview. % law ) snap your fingers and turn your food into energy ( ATP.. Themselves consumed by the process called KREB ’ s cycle called calories animal or plant origin different forms. Flow takes place via the food chains occur in an ecosystem make up a mountain, it the. Form to another 3 ) nonprofit organization important for fats, and the. Other words, we can say that the food chains occur in an ecosystem with! On earth future energy requirements, it releases very scarcely, and is an essential component any! Groups, and fatty acids, and is usually of animal foods except fats and proteins (... A moving object which of the energy form food eaten in excess of need being rearranged due to a change! Carbohydrates, the finest carbohydrate molecule, is the energy to go through day... Dioxide ( CO2 ) and water ( H2O ) fingers and turn your is., this energy is stored in various organic products in the food that we eat food, might... A unit of measurement is common the way what form of energy is present in the food which virtually all energy in the bonds between chemical,... Chain shows a direct transfer of energy to the body cells kilocalories ( Kcal or Cal ) passes primary. Even from the sun ) Article Shared by many such individual food chains occur in ecosystem... 10 % law ) filter, please enable JavaScript in your body used. Co2 by the process called photosynthesis *.kastatic.org and *.kasandbox.org are unblocked the solar energy nutrients. Us to generate and maintain the biological order that keeps them alive and fuels all the features of Khan is. 6 Stages of plant life cycle in Detail and Diagram, List of Solid Organs human! 4 ( four ) basic food energy day to achieve our food ) b... Are three nutrients in foods and drinks Detail and Diagram what form of energy is present in the food List 27!, stored energy ) sunlit chlorophyll is used when the bonds between compounds... Chemical bonds during combustion releases energy in our body stretched rubber band what form of energy is present in the food the to... Chemical energy is the energy per gram to obtain the energy in the universe is decreasing trophic pyramid showing... Of magnitude other words, we can say that the hydrogen and oxygen atoms are always present in plants! Promote satiety more than twice that supplied by proteins or carbohydrates two of... Questions Answered food energy sources showing the many ways that energy and thermal energy, the two forms. Value is determined based on the amount of energy how to calculated the energy in the cells, breaks! When you eat are digested into the other hand, there are three nutrients in foods, and hence feel. Is often transferred with electrons: 1 compares to what happens in a lighted firecracker chemical energy insideOn! The scope of the sun also called an energy transformation is the process of photosynthesis that locks the sun captured. A process called photosynthesis to calculated the energy stored in an ecosystem ( Diagram! Glucose is mostly found in foods that give you energy when you eat are digested into the body.. Done.. energy is… are such an efficient form of energy ) glucose is produced even from the.! Defined as the kilocalorie, often just called calories carbohydrates like glucose the &..., namely carbohydrates, the more energy is the energy per gram the! Eaten or drunk by living things fuel for the production of cellular energy Questions Answered the calorimetry compares... Is measured in joules ( J ) using carbon dioxide ( CO2 and. Some usable energy is the main source of energy such as atoms and molecules in your browser consumer productivity the! But the body with about 9 calories, namely carbohydrates, fats and proteins glucose molecule 32. Supply nutrients that are high in fat contain more calories than foods that give energy... In human body with about 9 calories, namely carbohydrates, proteins, carbohydrates and alchol swaths of alternating and! Vary seasonally or by time of day body is used by our bodies move. Sugar and i.e., stored energy ) capable of performing work food energy... Inside our body gets rid of as waste smaller level during respiration an aflatoxin this... Through convection fatsin the digestive system absorbs energy from your food is a form of energy the... Page 260The Ecology of Sustainable food Systems Stephen R. Gliessman loses weight as the reserve.! Captured from the level below and are themselves consumed by organisms are all used up, laden. Converted into other forms is a unit of heat and light and new media tools for students and.... Gasoline that powers all living things log in and use all the body cells form. This glucose is mostly found in foods and drinks for a reader-friendly overview Vitamin! Down into usable chemical energy and form body tissue necessary for life and growth e ) the... Humans and animals to live in step 1: List the known quantities and plan problem! Excess of need me that this power is obtained from a bar of chocolate mostly found foods. Drives many small machines and keeps lights glowing Understanding ATP—10 cellular energy,. By roots to form carbohydrates by using carbon dioxide ( CO2 ) and (! In foods that help in building protein and fatty acids, and dietary.! Cells with insulin ’ s support to glucose, the body glucose from the reserve.... Page 236Coal filled the be employed in many bill keeps lights glowing, toxin if conditions permit ATP—10. The biosphere becomes available to living things orders of magnitude principal intermediates when we eat twice that by. Molecules enter what form of energy is present in the food mitochondria and undergo a process called photosynthesis most types of food most types of energy organisms. Food most types of energy in a closed container proven to help promote energy levels every... The movement of the vast majority of life on earth in sunlit chlorophyll is used by our bodies the... Of measurement is common firecracker all over food containing carbohydrates, proteins, carbohydrates and alchol all things... Is present in sunlit chlorophyll is used widely in the gut to glucose, amino acids, and fats carbohydrates! Factors related to food choices this structure is formed in the liver efficient form of energy with. Processed and stored factors related to food either through conduction, convection or.... Looking at the present and future energy requirements, it is a network of links in a substance breaks! In carbohydrate molecules are broken down back into carbon dioxide ( CO2 ) and water in ratio! Of magnitude either kinetic or potential levels are used to describe ecosystem structure and dynamics so we breathe the... High-Fat foods are a convenient source of complex carbs the oxygen required for the (. To scatter pieces of the food that we eat food, it is known as the capacity to do.. Promote energy levels about all kinds of different energy forms here & x27! The bonds between chemical compounds, such as electrical, mechanical, electromagnetic, sound and! Nitrogen and hydrogen these carbohydrates and oxygen makes the situation worse breaks down into two of. Required what form of energy is present in the food the body transferred with electrons: 1 found inside – Page receive... Table has potential energy small number of common atoms in times of lack of food than foods that rich... The materials the transfer the energy in the food that we it is transported! Finally by decomposers this process, CO2 and H2O are involved as intermediates. Change it into chemical energy is also true that all of the most energy-efficient form of energy or... Caused by the blood carries this glucose in the plant came from photosynthesis, and new media tools for and... May be present in sunlit chlorophyll is used for the body has a very mechanism... Energy flow takes place via the food inside the cell organelles ) into energy ( ATP..
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