Question

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• ᴡʜᴀᴛ ɪs ᴘʏʀᴜᴠᴀᴛᴇ ?
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➪ ᴀɴsᴡᴇʀ ᴍᴜsᴛ ʙᴇ ɪɴ ʟᴏɴɢ [ 200+ ᴡᴏʀᴅs ] ✍︎
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Answer 1

Answer:

Pyruvate(3 carbon atom) is metabolic product of breaking down glucose (6 carbon atom) in glycolytic pathway......It ocuurs in 10 steps yielding a net 2ATP (energy).......It is a common pathway in both aerobic and anerobic respiration .......

Step 1-

The first step in glycolysis is the conversion of D-glucose into glucose-6-phosphate. Hexokinase enzyme catalyzes this reaction......

Step 2

In this, the rearrangement of glucose 6-phosphate (G6P) into fructose 6-phosphate (F6P) takes place by glucose phosphate isomerase enzyme.....

Step 3.

Phosphofructokinase enzyme in presence of Mg

ion converts fructose 6-phosphate into fructose 1,6-bisphosphate.

Step 4.

Enzyme Aldolase splits fructose 1, 6-bisphosphate into two sugars, namely dihydroxyacetone phosphate (DHAP) and glyceraldehyde 3-phosphate (GAP).

Step 5.

Enzyme triophosphate isomerase interconverts the dihydroxyacetone phosphate (DHAP) into glyceraldehyde 3-phosphate (GAP). ...

Step 6.

Enzyme glyceraldehyde-3-phosphate dehydrogenase converts glyceraldehyde 3-phosphate into 1,3-bisphosphoglycerate. In this step, NADH + is formed.

Step 7:

Enzyme phosphoglycerate kinase converts 1,3-bisphosphoglycerate to 3-phosphoglycerate. In this step, ATP is formed.

Step 8:

Enzyme phosphoglyceromutase converts 3- phosphoglycerate to 2-phosphoglycerate.

Step 9:

Enzyme enolase removes a molecule of water from 2-phosphoglycerate to form phosphoenolpyruvic acid (PEP).

Step 10:

Enzyme pyruvate kinase 2 molecules of pyruvic acids are formed from phosphoenolpyruvate (PEP). In this step, ATP is formed.

HOPE IT HELPS... ..

Answer 2

Pyruvate is the molecules form resulting from the loss of the high energy phosphate by the help of glycolysis . it is also called pyruvic acid .

1. glucose is phosphorylated of glucose - 6 - phosphate by ATP in the presence of enzyme hexokinase.

2. glucose - 6- phosphate is changed to its isomer fructose -6-phosphate with the help of enzyme phosphohexose isomerase.

3. fructose -6-phosphate is further phosphorylated by the means of ATP in the presence of enzyme phosphofructokinase and Mg+ .the product is fructose -1,6diphosphate .The irreversible phosphorylation reaction catalysed by phosphofructokinase is the rate limiting step in glycolysis.

4.fructose1,6-phosphate splits up enzymatically to form one molecule each of 3-carbon compounds PGAL and DHAP.

5. DHAP is isomerised to glyceraldehyde 3-phosphate by enzyme triose phosphate isomerase.

6. in the presence of enzyme glyceraldehydephosphate dehydrogenase, glyceraldehyde 3-phosphate loses hydrogen to NAD to form NADH2 and accept inorganic phosphate to form 1,3 -diphosphoglycerate.

7. one of the two phosphate of diphosphoglycerate in the presence of the enzyme phosphoglycerate kinase.

8. 3- phosphoglycerate is changed to its isomer 2-phosphoglycerate by enzyme phosphoglycermutase which transfers the phosphate form third of second corbon.

9.through the agency of enzyme enolase 2- pgosphoglycerate is converted to phosphenolpyruvate.

10. The energy phosphate of 2- phosphenolpyruvic acid is transferred to ADP by the enzyme pyruvate kinase to generate, 2 molecule of ATP per molecule of the glucose oxidized to form two molecule of pyruvate.