NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What two factors affect how an enzyme functions?
A
temperature and pH
B
temperature and viscosity
C
pH and viscosity
D
None of the above
Explanation: 

Detailed explanation-1: -Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. pH: Each enzyme has an optimum pH range. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to. More items

Detailed explanation-2: -The proteins in enzymes are usually globular. The intra-and intermolecular bonds that hold proteins in their secondary and tertiary structures are disrupted by changes in temperature and pH. This affects shapes and so the catalytic activity of an enzyme is pH and temperature sensitive.

Detailed explanation-3: -Enzyme activity is at its maximum value at the optimum pH. As the pH value is increased above or decreased below the optimum pH the enzyme activity decreases.

Detailed explanation-4: -Substrate concentration: The activity of an enzyme also increases with the increase in substrate concentration. pH. Each enzyme has its optimal pH in which they work. Temperature: Enzyme cofactor and coenzyme: Enzyme inhibitors:

There is 1 question to complete.