Question

why the oxygen is necessary for complete oxidation of glucose
10 th bio
new syllabus

Answer 1

The oxidation of glucose actually takes place in a complicated series of steps involving ATP (adenosine triphosphate, the energy carrier of living organisms), ADP (adenosine diphosphate, a lower-energy form of ATP; ATP + H2O --> ADP + H2PO4-, with DGo= -30.54 kJ/mole), NAD+(nicotinamide adenine dinucleotide), and NADH (the reduced form of NAD+). These steps occur as in three groups.

First come the glycolysis steps, for which DGo = -196.6 kJ/mole. These steps carry out the overall reaction:C6H12O6 + 2ATP + 2ADP + 2NAD+→2NADH + 4ATP + 2 lactic acid

The structure of lactic acid is CH3-CHOH-COOH and its systematic name is 1-hydroxypropanoic acid. Two molecules of lactic acid are produced, and two molecules of ATP are produced from ADP, on glycolysis of a molecule of glucose.

The NADH produced in this reaction is recycled. This is the purpose of the second portion of the pathway, the oxidation steps, which provide recovery of the NAD+. These take place via the cytochrome pathway:

Answer 2

Answer:

• All living organism requires energy to live and to perform any useful functions.  
• This energy they get from food they eat. Energy is released when food contains nutrients, let’s say carbohydrate (glucose).  
• Energy released in the cells when oxidation of glucose occurs which means the carbohydrates which we eat converted into simpler substances with the help of oxygen.  
• For complete oxidation of glucose (i.e the breakdown into simpler substances) oxygen is necessary.