Metabolism and Chemical Reactions Quiz

Which part of the reaction is labeled as 'Reactants' in the diagram?

• The beginning of the curve

• The peak of the curve

• The end of the curve

• The middle of the curve

What type of reaction is shown by the energy diagram?

• Endothermic

• Exothermic

• Isothermal

• Adiabatic

Which of the following is true about reactants in a chemical reaction?

• They are unchanged

• They are made

• They are destroyed

• They are changed

Which graph correctly represents an exothermic reaction?

• Energy increases over time

• Energy remains constant

• Energy decreases over time

• Energy fluctuates randomly

During a science experiment, Rohan observed a reaction where a substance sped up the process without being consumed. What is the role of enzymes in the context of catalysts?

• Enzymes are consumed in reactions

• Enzymes are a type of catalyst

• Enzymes inhibit reactions

• Enzymes are unrelated to catalysts

What do enzymes help to do in a chemical reaction?

• Create energy

• Break or form bonds

• Absorb light

• Produce heat

Can enzymes be used more than once?

• Yes, they can be used over and over again

• No, they can only be used once

• Yes, but only twice

• No, they degrade after use

What is the role of enzymes in biochemical reactions?

• They slow down reactions

• They stop reactions

• They regulate reactions

• They have no role

What is the term for the molecule that an enzyme acts upon?

• Product

• Substrate

• Catalyst

• Inhibitor

What is the initial step in the enzyme-catalyzed reaction?

• Product release

• Substrate binding to the active site

• Enzyme deactivation

• Substrate breakdown