Write a balanced equation for conversion of glucose to CO2 and water, and use th

Question

Write a balanced equation for conversion of glucose to CO2 and water, and use the free energy values to determine the amount of energy inherent in this process under

a. standard conditions

b. physiological conditions

Standard Gibbs free energy of formation Phase (Matter) Chemical For muls AG imol Solid 2.900 394 39 910.56 174 Solid co Solid Liquid Liquid 237.14 Table M3.6-2 physiological condition comparable to those experienced by most living organisms mM 5.0 10 1.0 2.0 0.2 1.0 glucose NADH NAD ATP ADP Pi gasses Oz 0.20 atm CO2 .00040 atm Useful constants c 3.0 108 m/s h 6.6 1034Js N6.0 1023 av

Explanation / Answer

Equation for conversion of glucose [C6H12O6] to CO2 and water :

C6H12O6 + 6O2 = 6CO2 + 6H2O + 38 ATP [ aerobic respiration in a cell ]

  glucose + oxygen = carbon-di-oxide + water + 38 molecules of ATP

a] Energy under standard conditions--

Under standard conditions and with ample supply of oxygen, the glucose molecule is completely oxidised to give carbon di oxide and water. 38 molecules of adenosine triphosphate are released in the process. These ATP molecules are the " energy currency " of the body and can be used to supply energy when needed.

b] Energy under physiological conditions--

During heavy exercise or strainous work, the body might not get enough oxygen to oxidise the glucose molecule completely . In such a scenario oxygen deficiency is created in the body and lactic acid begins to accumulate in the muscle cells. This leads to muscle cramps and fatigue . The energy relesed is much less than in aerobic respiration.

Glucose + enzymes -------------> carbondioxide + lactic acid + 2 ATP

Lactic acid needs to be oxidised further to form CO2, H2O and release more ATPs.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.