The Role and Properties of Enzymes Quiz

What is activation energy?

• Energy required to stop a reaction

• Energy stored in products after a reaction

• Energy released during a reaction

• Energy supplied to reactants to start a reaction

What are enzymes?

• Inorganic compounds found in nature

• Chemicals that inhibit reactions

• Toxic substances in living cells

• Protein molecules that serve as biological catalysts

What is the main function of enzymes?

• Prevent reactions from occurring

• Slow down chemical reactions

• Speed up metabolic reactions in organisms

• Change the chemical structure of reactants

What happens to enzymes after catalyzing a reaction?

• Remain unchanged and reusable

• Become inactive and lose their function

• Get destroyed and need replacement

• Transform into different molecules

How are enzymes affected by temperature and pH?

• Activity increases exponentially with temperature

• Activity remains constant regardless of conditions

• Activity is not influenced by pH levels

• Activity is affected, leading to denaturation