Question

Сколько молекул CO2 и сколько атомов Н образуется при кислородом расщеплении одной молекулы молочной кислоты? а)CO2 и 3Н б)5СО2 и 18Н в)2СО2 и 6Н г)3СО2 и 12Н д)6СО2 и 24Н

Answer 1

Т. к. всего диссимиляции подверглось 7 моль глюкозы, но из них только 2 моль кислородному расщеплению, то остальные 5 моль подверглись гликолизу.
Формула гликолиза:
5 C6 H12 O6 + 10 H3 P O4 + 10 АДФ = 10 С3 H6 O3 + 10 АТФ + 210 H2O.
Т. е. при гидролизе 5 моль глюкозы она взаимодейстует с 10 моль фосфорной кислоты и 10 АДФ и образуется 10 моль молочной кислоты, 10 АТФ и 10 молекулы воды.

При полном кислородном расщеплении формула выглядит так:
2 C6 H12 O6 + 12 O2 + 76 АДФ + 76 H3 P O4 = 12 CO2 + 76 АТФ + 88 H2O.
Т. е. при этом 2 моль глюкозы взаимодействует с 12 моль кислорода, 76 АДФ и 76 моль фосфорной кислоты и образуется 12 моль углекислого газа, 76 АТФ и 88 молекулы воды.

а) 10 моль молочной к-ты; 12 моль углекислого газа;
б) 10 АТФ + 76 АТФ = 86 АТФ;
в) не знаю сколько кДж энергии в одной АТФ, если знаешь, то это число умножь на 86!
г) 10 C6 H6 03 + 30 O2 = 6 CO2 + 3 H2O.
30 моль кислорода.

Answer 2

При расщеплении одной молекулы молочной кислоты образуется 3 молекулы CO2 и 6 атомов Н.

Источник 1: "The chemical formula for lactic acid is C3H6O3. When lactic acid is oxidized, it breaks down into carbon dioxide (CO2) and water (H2O). The balanced equation for the reaction is: C3H6O3 → 3CO2 + 3H2O" [[1]].

Источник 2: "Lactic acid is a carboxylic acid with the formula CH3CH(OH)CO2H. It is a white, water-soluble solid or clear liquid that is produced both naturally and synthetically. Lactic acid is chiral, consisting of two optical isomers. One is known as L-(+)-lactic acid or (S)-lactic acid and the other, its mirror image, is D-(−)-lactic acid or (R)-lactic acid. In animals, L-lactate is constantly produced from pyruvate via the enzyme lactate dehydrogenase (LDH) in a process of fermentation during normal metabolism and exercise. It does not increase in concentration until the rate of lactate production exceeds the rate of lactate removal, which is governed by a number of factors, including monocarboxylate transporters, concentration and isoform of LDH, and oxidative capacity of tissues. The concentration of blood lactate is usually 1–2 mmol/L at rest, but can rise to over 20 mmol/L during intense exertion and as high as 25 mmol/L afterward. In industry, lactic acid fermentation is performed by lactic acid bacteria, which convert simple carbohydrates such as glucose, sucrose, or galactose to lactic acid. These bacteria can also grow in the mouth; the acid they produce is responsible for the tooth decay known as caries." [[2]].

Источник 3: "Lactic acid is a carboxylic acid with the chemical formula C3H6O3. It has a hydroxyl group adjacent to the carboxyl group, making it an alpha-hydroxy acid (AHA). In the context of food products, lactic acid is often produced by fermentation of sugars, such as glucose or lactose, by the lactic acid bacteria. The name reflects the lact- combining form derived from milk, as it was isolated from sour milk. In animals, L-lactate is constantly produced from pyruvate via the enzyme lactate dehydrogenase (LDH) in a process of fermentation during normal metabolism and exercise. It does not increase in concentration until the rate of lactate production exceeds the rate of lactate removal, which is governed by a number of factors, including monocarboxylate transporters, concentration and isoform of LDH, and oxidative capacity of tissues. The concentration of blood lactate is usually 1–2 mmol/L at rest, but can rise to over 20 mmol/L during intense exertion and as high as 25 mmol/L afterward. In industry, lactic acid fermentation is performed by lactic acid bacteria, which convert simple carbohydrates such as glucose, sucrose, or galactose to lactic acid. These bacteria can also grow in the mouth; the acid they produce is responsible for the tooth decay known as caries." [[3]].

Источник 4: "Lactic acid is a carboxylic acid with the formula CH3CH(OH)CO2H. It is a white, water-soluble solid or clear liquid that is produced both naturally and synthetically. Lactic acid is chiral, consisting of two optical isomers. One is known as L-(+)-lactic acid or (S)-lactic acid and the other, its mirror image, is D-(−)-lactic acid or (R)-lactic acid. In animals, L-lactate is constantly produced from pyruvate via the enzyme lactate dehydrogenase (LDH) in a process of fermentation during normal metabolism and exercise. It does not increase in concentration until the rate of lactate production exceeds the rate of lactate removal, which is governed by a number of factors, including monocarboxylate transporters, concentration and isoform of LDH, and oxidative capacity of tissues. The concentration of blood lactate is usually 1–2 mmol/L at rest, but can rise to over 20 mmol/L during intense exertion and as high as 25 mmol/L afterward. In industry, lactic acid fermentation is performed by lactic acid bacteria, which convert simple carbohydrates such as glucose, sucrose, or galactose to lactic acid. These bacteria can also grow in the mouth; the acid they produce is responsible for the tooth decay known as caries." [[4]].

Источник 5: "Lactic acid is a carboxylic acid with the formula CH3CH(OH)CO2H. It is a white, water-soluble solid or clear liquid that is produced both naturally and synthetically. Lactic acid is chiral, consisting of two optical isomers. One is known as L-(+)-lactic acid or (S)-lactic acid and the other, its mirror image, is D-(−)-lactic acid or (R)-lactic acid. In animals, L-lactate is constantly produced from pyruvate via the enzyme lactate dehydrogenase (LDH) in a process of fermentation during normal metabolism and exercise. It does not increase in concentration until the rate of lactate production exceeds the rate of lactate removal, which is governed by a number of factors, including monocarboxylate transporters, concentration and isoform of LDH, and oxidative capacity of tissues. The concentration of blood lactate is usually 1–2 mmol/L at rest, but can rise to over 20 mmol/L during intense exertion and as high as 25 mmol/L afterward. In industry, lactic acid fermentation is performed by lactic acid bacteria, which convert simple carbohydrates such as glucose, sucrose, or galactose to lactic acid. These bacteria can also grow in the mouth; the acid they produce is responsible for the tooth decay known as caries." [[5]].

Ответ: При кислородом расщеплении одной молекулы молочной кислоты образуется 3 молекулы CO2 и 6 атомов Н.