03 Notes Quiz Enzymes and Cellular Energy

What are reactants in a chemical reaction?

• Substances that are formed as a result of a chemical reaction

• The chemicals that participate in a chemical reaction

• The energy required to start a reaction

• The catalyst used in a reaction.

In the chemical equation C6H12O6 + O2 → CO2 + H2O, which of the following are the products?

• C6H12O6 and O2

• CO2 and H2O

• C6H12O6 and CO2

• O2 and H2O

What is the primary function of enzymes in chemical reactions?

• To slow down reactions

• To increase the activation energy required

• To catalyze and speed up reactions

• To create new chemicals.

How do enzymes affect the activation energy of a reaction?

• They increase it

• They decrease it

• They have no effect

• They eliminate it.

What is one of the roles of enzymes in the human body?

• To slow down reactions

• To break down toxic wastes in a timely manner

• To increase the energy barrier of reactions

• To make reactions occur randomly

According to the diagram, what effect does a catalyst have on the energy barrier of a reaction?

• It increases the energy barrier

• It decreases the energy barrier

• It has no effect on the energy barrier

• It stops the reaction completely

Which enzyme is found in blood and speeds up the removal of carbon dioxide from our bodies?

• Catalase

• Amylase

• Carbonic anhydrase

• Lipase

What is the function of catalase in the body?

• Speeds up the breakdown of sugar

• Speeds up the decomposition of hydrogen peroxide

• Speeds up the removal of carbon dioxide

• Speeds up the digestion of proteins

Which substrate does amylase act on?

• Carbon dioxide

• Hydrogen Peroxide

• Maltrose

• Oxygen

What is the role of a substrate in an enzyme-substrate complex?

• It acts as a catalyst

• It attaches to the enzyme's active site

• It breaks down the enzyme

• It changes the enzyme's shape.