Understanding Enzymes and Their Functions

What is the primary function of the active site in an enzyme?

• To change the enzyme's shape

• To transport molecules

• To store energy

• To bind with a specific substrate

How do enzymes speed up chemical reactions?

• By increasing the temperature

• By changing the pH

• By lowering the activation energy

• By adding more substrates

What is enzyme-substrate specificity?

• An enzyme can bind with any substrate

• An enzyme can change its substrate

• An enzyme can bind with only one specific substrate

• An enzyme can bind with multiple substrates at once

What is the term for the energy required to start a chemical reaction?

• Kinetic energy

• Potential energy

• Thermal energy

• Activation energy

What is the result of a reaction where energy is released?

• Endothermic reaction

• Exothermic reaction

• Catalytic reaction

• Neutral reaction

Which process involves building up molecules in metabolism?

• Hydrolysis

• Anabolism

• Oxidation

• Catabolism

What is the role of enzymes in metabolism?

• They are consumed in reactions

• They control the rate of reactions

• They provide energy for reactions

• They slow down reactions

What happens to an enzyme when it is denatured?

• It binds more substrates

• It changes shape and loses function

• It speeds up reactions

• It becomes more active

Which factor does NOT affect enzyme activity?

• Temperature

• Color of the enzyme

• pH

• Substrate concentration

What is the effect of increasing substrate concentration on enzyme activity?

• It always increases activity

• It decreases activity

• It increases activity up to a point

• It has no effect