JIPMER 2015
- Exam
- JIPMER
- Year
- 2015
- Subject
- Botany
- Chapter
- Biomolecules (B)
JIPMER 2015 · Botany · Biomolecules (B)
The enzyme hexokinase which catalysis glucose to a...
The enzyme hexokinase which catalysis glucose to a glucose-6-phosphate in glycolysis is inhibited by glucose-6-phosphate. This is an example of
I. competitive inhibition
II. non-competitive inhibition
III. feedback allosteric inhibition
Which of the above statements is/are correct?
Options
- AI and II
- BI and III
- COnly III
- DAll of these
Correct answer
C. Only III
Step-by-step solution
Hexokinase catalyses the phosphorylation of hexose in general and is found in all cells that metabolise glucose. It has low (high affinity, strong bonding) with glucose in such a way that it is active at low glucose concentration. It shows allosteric feed beat inhibition by to product glucose-6-phosphate.