Question

Why do you think enzyme X has low activity at a pH of 10?

Answer 1

Explanation:

• When the pH value deviates from the ideal conditions, the activity of the enzyme slows down and then stops. The enzyme has an active site at the substrate binding site, and the shape of the active site will change with the change of pH value

Answer 2

Answer: An enzyme X has low activity at pH 10 because the activity of the enzyme is significantly influenced by its structure. In other words, alterations to the structure of the enzyme have an effect on the pace of chemical reactions. The shape and structure of the enzyme will change whenever the pH level of the reaction medium changes.

Explanation:

• The ionisation of amino acid atoms and molecules as a result of a pH change can alter the shape and structure of proteins and impair their ability to perform their intended functions.
• Proteins, including enzymes, are impacted by pH fluctuations. The majority of enzymes will completely cease to function at extremely high or extremely low pH levels. The optimal pH level is that at which the enzyme is most active.
• The shape and structure of the enzyme will change whenever the pH level of the reaction medium changes. The ionisation state of acidic or basic amino acids, for instance, can be influenced by pH.
• The side chain of acidic amino acids holds carboxyl functional groups. The side chains of basic amino acids contain functional groups which contain amines.
• The ionic linkages that keep the protein's three-dimensional form will alter if the ionised status of the amino acids in the protein changes. Protein alterations could result from this.
  
  Optimal pH :

• The optimal pH is the pH at which all enzymes function best. Each enzyme functioned at its peak under ideal pH circumstances.
• For instance, an enzyme that operates best in the acidic environment of the human stomach has a lower optimal pH than an enzyme that operates best in the neutral environment of the human blood.
• The activity of the enzyme slows down and finally stops when the pH value deviates from the optimum range.
• The shape of the active site, which is located at the site where the enzyme binds to its substrate, changes as the pH value changes.

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