Question

What enzyme does Escherichia coli produce to break down lactose?

विकल्प

• Lipase

• β-galactosidase

• Lactase

• Protease

Answer 1

Escherichia coli produces β-galactosidase to break lactose into galactose and glucose. This enzyme is only produced when lactose is present in the environment, demonstrating that environmental factors regulate gene expression.