Multiple choice

Which of the following matches of ‘reaction of the C3 carbon fixation: enzyme catalysing that step’ is not correct?

  1. Carboxylation of ribulose-1,5-bisphosphate : RuBisCO

  2. Gluconeogenesis : Phosphoglycerate kinase

  3. Spliting of fructose 1,6-bisphosphate : Aldolase

  4. Hexose monophosphate shunt : Ribose-5-phosphate isomerase

  5. Pentose phosphate pathway : Phosphoribulokinase
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In hexose monophosphate shunt, Xylulose 5-phosphate converts into ribulose 5-phosphate, is catalysed by ribulose-phosphate epimerase. Conversion of ribose 5-phosphate to Ribulose 5-phosphate is catalysed by ribose-5-phosphate.

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