NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not a characteristic of enzymes?
A
they are proteins
B
they react with a multiple substrate
C
they are affected by changes in temperature
D
they act as a catalyst
Explanation: 

Detailed explanation-1: -Enzyme activity is not regulated and thus it is not characteristic of an enzyme.

Detailed explanation-2: -The correct answer: The factor which does NOT affect enzyme activity is d. Free Energy.

Detailed explanation-3: -Explanation: Activity decreases because temperature affects the conformation of the protein and the enzyme’s active site. The temperature does not affect the formation of amino acids in the enzyme.

Detailed explanation-4: -Several factors affect the rate at which enzymatic reactions proceed-temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.

Detailed explanation-5: -It is a protein and therefore, gets destroyed by heating. It acts only on one kind of substance called the substrate. It acts as a catalyst, so it can be used again and again. It only affects the rate of a chemical reaction. More items

There is 1 question to complete.