BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The optimum temperature for human lactase is about 37 °C and the optimum pH is 6. In metabolism, the -glycosidic bond in D-lactose is hydrolyzed to form D-galactose and D-glucose, which can be absorbed through the intestinal walls and into the bloodstream.

Detailed explanation-2: -So by definition, 125 to 135 degrees F is the “optimum temperature” (range) for lactase activity. At temperatures higher than this range, the enzyme quickly becomes denatured and therefore unable to break down the milk sugar.

Detailed explanation-3: -coli lactase is readily inactivated at pH 5.0, and its optimal activity at 36°C. is reached between pH 7.0 and pH 7.5. The optimal temperature for its action was found to be 46°C.

Detailed explanation-4: -Answer and Explanation: Lactase is most effective when heated to 37 degrees Celsius. This is accurate since the human body’s natural temperature is around 98.6 degrees Fahrenheit. Lactase is a human body enzyme, hence its optimal operating temperature makes sense: 37 degrees Celsius (room temperature).

Detailed explanation-5: -Relationship between the enzymatic activity of lactase and temperature: From the data table, it can be inferred that at zero degrees Celsius or at cold temperatures, the lactase is enzymatically active, leading to the production of glucose.