1. Place the following intermediates of glycolysis in their correct order in the
ID: 174864 • Letter: 1
Question
1. Place the following intermediates of glycolysis in their correct order in the pathway:
(1) glucose
(2) 2-phosphoglycerate
(3) 3-phosphoglycerate
(4) glucose-6-phosphate
(5) fructose-1,6-bisphosphate (6) fructose-6-phosphate
(7) glyceraldehyde-3-phosphate (8) 1,3-bisphosphoglycerate
(9) pyruvate
(10) phosphoenolpyruvate
Circle the correct answer below:
(a) 1, 4, 7, 8, 10, 2, 3, 5, 6, 9
(b) 1, 4, 5, 6, 8, 7, 2, 3, 9, 10
(c) 4, 1, 5, 6, 7, 8, 3, 2, 10, 9
(d) 1, 4, 6, 5, 7, 8, 3, 2, 10, 9
(e) 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Explanation / Answer
The correct order is option d
Glucose is converted into glucose-6-phosphate by hexokinase.Glucose-6-phosphate to fructose-6- phosphate by isomerase. F-6-P to F-1,6-bisphosphate by phosphofructokinase. Then to G-3-P by aldose and next step is catalyzed by triose phosphate isomerase.
Next step is catalyzed by G-3-P dehydrogenase and next is by phosphoglycerate kinase.
Phosphoenolpyruvate to pyruvate is by pyruvate kinase.
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