BIOMOLECULES AND ENZYMES

BIOLOGY

ENZYMES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is NOT a way that enzymes speed up chemical reactions?
A
strain bonds in the structure
B
orient reacting molecules
C
provide favorable environment
D
increase required energy of activation
Explanation: 

Detailed explanation-1: -Which of the following is NOT a way in which an enzyme can speed up the reaction that it catalyzes? The active site can provide heat from the environment that raises the energy content of the substrate. An enzyme cannot extract heat from the environment to speed a reaction.

Detailed explanation-2: -The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.

Detailed explanation-3: -Enzymes in our bodies are catalysts that speed up reactions by helping to lower the activation energy needed to start a reaction.

Detailed explanation-4: -Desolvation or taking reactants out of the solution state. Establishing weak bonds between the reactants and enzyme. Bringing the reactant molecules closer in the region of the active sites of enzymes. Development of strain in the bonds of the reactants by the electrophilic and nucleophilic attack.

There is 1 question to complete.