BIOMOLECULES AND ENZYMES

BIOLOGY

STRUCTURE OF PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
All proteins have an optimal pH. What is it?
A
about 3
B
about 14
C
about 2
D
it varies based on environment
Explanation: 

Detailed explanation-1: -pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.

Detailed explanation-2: -The structure and function of most macromolecules are influenced by pH, and most proteins operate optimally at a particular pH (optimum pH) [4]. On the basis of indirect measurements, it has been found that the intracellular pH usually ranges between 4.5 and 7.4 in different cells [5].

Detailed explanation-3: -Each enzyme has an optimum pH but it also has a working range of pH values at which it will still work well. This depends on the type of enzyme. The enzyme pepsin breaks down proteins in the acidic conditions of the stomach. Pepsin has an optimum of pH 2.5 and a working range of between pH 1-4.

Detailed explanation-4: -So, the correct option is ‘20-25o C and 7.0 pH’

There is 1 question to complete.