BIOMOLECULES AND ENZYMES

BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Enzymes are capable of increasing the rate of a chemical reaction within a living cell. Enzymes accomplish this through which of the following means?
A
reducing the number of products
B
reducing the activation energy
C
increasing the temperature of the cell
D
increasing the concentration of reactants
Explanation: 

Detailed explanation-1: -Enzymes (and other catalysts) act by reducing the activation energy, thereby increasing the rate of reaction.

Detailed explanation-2: -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: -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: -This minimum energy required for the reaction to proceed is called the activation energy. Enzymes enhance the rate of the reaction by reducing the activation energy required for the reaction to proceed.

Detailed explanation-5: -Enzymes and Activation Energy The amount of energy needed before a reaction will proceed on its own is called activation energy. Energy is needed to break existing bonds before new bonds can be formed. The formation of new bonds may release more energy than was needed to break the original bonds.

There is 1 question to complete.