NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the main goal of enzymes?
A
lower the activation energy
B
raise the activation energy
C
slow the reaction rate
D
find other molecules
Explanation: 

Detailed explanation-1: -Enzymes lower the activation energy necessary to transform a reactant into a product.

Detailed explanation-2: -Compare the activation energy with and without the enzyme. Enzymes generally lower activation energy by reducing the energy needed for reactants to come together and react. For example: Enzymes bring reactants together so they don’t have to expend energy moving about until they collide at random.

Detailed explanation-3: -A catalyst increases the rate of reaction by decreasing the activation energy. Decreased activation energy means less energy required to start the reaction.

Detailed explanation-4: -By manipulating the substrates of the reaction, the enzyme can lower the necessary energy needed to make the reaction occur.

There is 1 question to complete.