Effect of Temperature and pH on Enzymatic Activity

Based on the graph about temperature and rate of enzyme reaction, the enzyme catalyzes the reaction at an optimal temperature of ​ (a)  

• 37 degrees

• 30 degrees

• 35 degrees

• 40 degrees

What happens when enzymes are heated to a high temperature?

• The enzymes die.

• The shape of the enzyme are changed and it denatures

• The enzymes' amino acid sequence changes.

• The enzymes remain the same

Based on the amount of oxygen produced, which is the optimal temperature for the enzyme?

Tags

NGSS.HS-LS2-3

Draw a graph showing the rate of reaction involving an enzyme at different temperatures. The graph must show the optimal temperature.

What is thermal stability of enzymes?

• The ability of an enzyme to maintain its structure and function at normal temperatures.

• The ability of an enzyme to maintain its structure and function at low temperatures.

• The ability of an enzyme to maintain its structure and function at high temperatures.

• The ability of an enzyme to change its structure and function at high temperatures.

Which enzyme will NOT have a functioning active site?

If an enzyme becomes over heated what effect, if any, will the heat have on the enzymatic activity? 

• The enzyme will not store much chemical energy.

• The enzyme will not be able to catalyze reactions.

• The enzyme will lose its net electrical charge.

• The enzyme will lose stored genetic information.

Every enzyme has a optimal temperature and pH. True or False?

• True 

• False

How does temperature affect the rate of enzymatic reactions?

• A) It always increases the rate.

• B) It always decreases the rate.

• C) It increases the rate up to a certain point, then decreases it.

• D) It has no effect on the rate.

What is the effect of pH on enzyme activity?

• A) Enzymes work best at any pH level.

• B) Each enzyme has an optimal pH range where it functions best.

• C) Enzymes are inactive at neutral pH.

• D) Enzymes are only active in acidic conditions.