NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Enzymes affect the reactions in living cells by changing the
A
speed of the reaction
B
temperature of the reaction
C
pH of the reaction
D
products of the reaction
Explanation: 

Detailed explanation-1: -First, they increase the rate of chemical reactions without themselves being consumed or permanently altered by the reaction. Second, they increase reaction rates without altering the chemical equilibrium between reactants and products.

Detailed explanation-2: -Enzymes are proteins – primary constituents of all living organisms. They act as catalysts, which means that they make biochemical reactions happen faster than they would otherwise. Without enzymes, those reactions simply would not occur or would run too slowly to sustain life.

Detailed explanation-3: -Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.

Detailed explanation-4: -Enzymes allow reactions to occur at the rate necessary for life. In animals, an important function of enzymes is to help digest food. Digestive enzymes speedup reactions that break down large molecules of carbohydrates, proteins, and fats into smaller molecule s the body can use.

Detailed explanation-5: -Answer and Explanation: Enzymes are regenerated during a chemical reaction, not used up or changed as the reactants are. Enzymes are catalysts, meaning they speed up chemical reactions without being used up in the chemical reaction themselves.

There is 1 question to complete.