Answer 1: VMax
Answer 2: [4–6]
Answer 3: 98.6 degrees
Explanation 1: Vmax is the maximal reaction rate or velocity of an enzymatically catalyzed reaction when the enzyme is saturated with its substrate. At a specified enzymatic concentration, temperature & pH, this maximal rate of reaction is the characteristic feature of a particular enzyme.
Explanation 2: The activity of many enzymes is strongly influenced by the pH of the reaction milieu. Although some enzymes exhibit activity in a broad range of pH [1–3], many show maximal activity at a narrow pH range [4–6], referred to as the pH optimum.
Explanation 3: Each enzyme has a temperature range in which a maximal rate of reaction is achieved. This maximum is known as the temperature optimum of the enzyme. The optimum temperature for most enzymes is about 98.6 degrees Fahrenheit (37 degrees Celsius). There are also enzymes that work well at lower and higher temperatures.