The difference between food burning and respiration

Combustion, commonly known as ignition, refers to the exothermic reaction between combustibles and oxidants, usually accompanied by flames, luminescence and smoke. Combustion has three characteristics, namely chemical reaction, exothermic and luminescence.

Food is burned in the air, and the CO2 produced is the C component of the food itself, which constitutes a large number of elements of the cell: C, H, O, N, P, S, K, CA, MG, etcThe most common is C, while respiration is the process by which organic matter in cells (living cells) is broken down into carbon dioxide and water under the action of oxygen, and energy is released at the same time.

The whole process of aerobic respiration can be divided into three stages: in the first stage, one molecule of glucose is broken down into two molecules of pyruvate, and a small amount of hydrogen (denoted by [h]) is produced in the process of decomposition, and a small amount of energy is released at the same time. This stage is carried out in the cytoplasmic matrix; In the second stage, pyruvate undergoes a series of reactions to break down into carbon dioxide and hydrogen, while releasing a small amount of energy.

This stage is carried out in the ** chondria ; In the third stage, the hydrogen produced in the first two stages, after a series of reactions, combines with oxygen to form water, and at the same time releases a large amount of energy. This stage is also carried out in the ** granula. Each of the above three chemical reactions is catalyzed by different enzymes.

In the organism, 1mol of glucose is completely oxidized and decomposed, and a total of 2870kJ of energy is released, of which about 1161kJ of energy is stored in ATP, and the rest of the energy is lost in the form of heat energy.

The things produced by the two are similar, but the process, conditions, and places are different.

1.Combustion acts outside the body, and breathing reduces the effect in the body.

Cellular respiration, also known as respiration, refers to the oxidative decomposition of organic matter in cells to produce carbon dioxide.

or other products that release energy and produce the process of taking the pants into ATP.

Respiration is divided into aerobic respiration and anaerobic respiration.

2.Comparison of in vitro combustion and cellular respiration.

The conditions are different: cellular respiration requires the urging of enzymes, and the conditions are mild (normal temperature and pressure), and in vitro combustion requires the temperature to reach the ignition point (ignition).

The phenomenon is different: the cell respiration is slowly exergated, and the latter is violently exerted, accompanied by luminescence and heat.

Even sparks fly.

The products may be different: in the case of anaerobic respiration, the products are alcohol and CO2 or lactic acid.

Similarities: both are oxidation reactions, and both release energy.

All are oxidation reactions.

The energy released by the complete oxidative decomposition of organic matter is the same; However, respiration is carried out in the cells of the organism, the energy is released slowly, a variety of enzymes are involved, and the reaction conditions are mild; Combustion is carried out outside the body, the reaction is rapid, it needs to be given the energy to start the reaction, the reaction is violent, and the energy is released quickly.

The common denominator: they are all oxidation reactions, and they can release heat from the mold.

Differences: Respiration is a slow oxidation process, and energy is released gradually; Food combustion is a vigorous oxidation process that is rapidly deenergized.

Breath for the meaning of digging for years: aprovide energy for the life activities of living organisms; b.It synthesizes other substances and provides energy for living organisms.

The commonality: they are all oxidation reactions, and they can release heat.

Differences: Respiration is a slow oxidation process, and energy is released gradually; Food combustion is a vigorous oxidation process, which is rapidly exerted by silver ground.

Significance of respiration: a

provide energy for the life activities of living organisms; b.

It synthesizes other substances and provides energy for living organisms.

Both are oxidation reactions, and the energy released by the complete oxidation and decomposition of organic matter is the same.

Respiration is carried out in the cells of the organism, and the energy is released slowly, requiring the participation of a variety of ingenious enzymes, and the reaction conditions are warm and frontal.

Combustion is carried out outside the body megawattage, the reaction is rapid, it needs to be given the energy to start the reaction, the reaction is violent, and the energy is released quickly.

The commonality: they are all oxidation reactions, and they can all release heat.

Differences: Respiration is a slow oxidation process; Food burning is a vigorous oxidative process of dismantling.

Significance of respiration:1provide energy for the life activities of living organisms; 2.Synthesize other substances for living organisms, and extract silver for energy.

1. Breathing is the inhalation of oxygen and the exhalation of carbon dioxide and water; Food combustion consumes oxygen, produces carbon monoxide and water, and releases energy. So the common denominator is that there must be oxygen involved, the products all have water, and at the same time all release energy; The difference is that carbon dioxide is produced by respiration, and most of the carbon monoxide produced by food combustion is also produced by carbon dioxide.

2. Stomach: alcohol and a small amount of water; Small intestine: glucose, amino acids, glycerol, fatty acids, water, vitamins, minerals; Large intestine: a small amount of water, inorganic salts, some vitamins.