alleryStart learning →An isomerase converts glucose-6-phosphate into which molecule during the second step of glycolysis?
AFructose-6-phosphate
BFructose-1,6-bisphosphate
CGlyceraldehyde-3-phosphate
DPhosphoenolpyruvate
Answer & Solution
Correct answer: A. Fructose-6-phosphate
1. An isomerase converts a molecule into one of its isomers.
2. In step two, glucose-6-phosphate is converted into its isomer fructose-6-phosphate.
3. This change from phosphoglucose to phosphofructose is what allows the later even split into two three-carbon molecules.
4. Fructose-1,6-bisphosphate comes one step later, after a second phosphate is added.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.2 Glycolysis_
Keep practising Cellular Respiration
Browse all Cellular Respiration questions for KCSE, or explore more Biology topics.
Related questions
Fill in the energy currency factsSplit the two electron carriersRoughly what free energy do the electrons carried by NADH hold as they enter the electron How is the rate of electron transport through the chain controlled?Besides being catabolized further, what else can the pyruvate produced by glycolysis becomWhich enzyme is described as the main controlled enzyme of glycolysis?What happens to glucose in a tissue where hexokinase has been inhibited?How does an allosteric effector change the behaviour of an enzyme?