Enzyme Graphs

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

Enzymes speed up the rate of chemical reactions by.....

• giving you extra oxygen.

• absorbing water released when polymers are formed.

• lowering the activation energy.

• combining with excess hydrogen to form a gas.

The reactants to which enzymes bind are also known as

• lipids

• reactions

• controls

• substrates

Which enzyme would you expect to find in bacteria growing in a hot environment?

• Enzyme X

• Enzyme Y

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

• True

• False

Which enzyme is active over the largest temperature range?

• Enzyme X

• Enzyme Y

Which enzyme has an optimum temperature of 40 degrees Celsius?

• Enzyme X

• Enzyme Y

Enzymes are important for the body because they

• increase the activation energy needed for a chemical reaction.

• keep the activation energy of a chemical reaction at a constant level.

• lower the activation energy needed for the chemical reaction.

• remove all of the activation energy needed for a chemical reaction.

An enzyme is which type of macromolecule

• Carbohydrate

• Lipid

• Protein

• Nucleic acid

The optimum pH for this enzyme is approximately

• 2

• 3.5

• 5.5

• 8

• 10