Final answer:
Enzymes that work best in environments with fluctuating pH levels are known as pH tolerant or broad range enzymes. Examples of such enzymes include catalase and amylase. Catalase functions optimally at a slightly basic pH, while amylases can work in a wide range of pH levels.
Step-by-step explanation:
Enzymes that work best in environments with fluctuating pH levels are known as pH tolerant or broad range enzymes. These enzymes are able to function efficiently across a range of pH values, including both acidic and basic environments.
One example of a pH tolerant enzyme is catalase. Catalase is an enzyme found in many organisms, including humans. It plays a key role in breaking down hydrogen peroxide into water and oxygen. Catalase functions optimally at a slightly basic pH of around 7-8, but it can still maintain some level of activity in both acidic and basic conditions.
Another example is amylase. Amylases are enzymes that break down starch into smaller sugar molecules. These enzymes are found in various organisms, including humans, and they can function in a wide pH range. For example, salivary amylase works at a neutral pH of around 6-7 in the mouth, while pancreatic amylase works at a slightly basic pH in the small intestine.