A biologist performed two series of experiments on lactase, the enzyme that hydrolyzes

Chapter 5, Problem 16

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A biologist performed two series of experiments on lactase, the enzyme that hydrolyzes lactose to glucose and galactose. First, she made up 10% lactose solutions containing different concentrations of enzyme and measured the rate at which galactose was produced (grams of galactose per minute). Results of these experiments are shown in Table A below. In the second series of experiments (Table B), she prepared 2% enzyme solutions containing different concentrations of lactose and again measured the rate of galactose production. A lysosome, a digestive organelle in a cell, has an internal pH of around 4.