Question

Glucose is converted to fructose by _________ enzyme.

(a) lactase

(b) phosphorylase

(c) glucose isomerase

(d) raffinase

I got this question during an interview for a job.

Asked question is from High Fructose Corn Syrups and use of Immobilized Raffinase, Invertase and Lactase topic in section Immobilized Enzymes and their Uses of Enzyme Technology

Answer 1

Correct option is (c) glucose isomerase

To elaborate: Glucose is converted to fructose in an isomerization reaction catalyzed by glucose isomerase. Lactase is used to catalyze the hydrolysis of lactose to glucose and galactose. Raffinase catalyzes the hydrolysis of raffinose. Phosphorylase is an enzyme that introduces a phosphate group into an organic molecule, notably glucose.