Enzymes Quiz

A catalyst is a chemical that

• blocks a chemical reaction from occurring

• slows down a chemical reaction

• speeds up the rate of a chemical reaction

• has no effect on a chemical reaction

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NGSS.HS-PS1-5

Object C in this image is know as the

• enzyme

• substrate

• enzyme-substrate complex

• product

The chemical an enzyme reacts with is known as the

• substrate

• enzyme

• product

• reactant

Which two factors can affect enzyme activity?

• Light intensity

• pH

• Moisture

• Temperature

Enzymes are

• nucleic acids
• proteins
• lipids
• carbohydrates

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NGSS.HS-LS1-1

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Tags

NGSS.HS-PS1-5

At high temperatures, the rate of enzyme action decreases because the increased heat......

• neutralizes the acids and bases in the system

• alters the shape of the active site of the enzyme

• increases the concentration of the enzyme

• changes the pH of the system

Both enzymes will have the same amount of activity at 40 degrees Celsius?

• True

• False

Which enzyme has an optimum temperature of 40 degrees Celsius?

• Enzyme X

• Enzyme Y

Which of the following does NOT have an impact on the rate at which an enzyme functions?

• Temperature

• pH

• Amount of substrate

• The type of enzyme