Effect of Temperature and pH on Enzymatic Activity

What happens when enzymes are heated to a high temperature?

• The enzymes die.

• The shapes of the enzyme are altered or denatured

• The enzymes' amino acid sequence changes.

• The enzymes remain the same

Compare the two pathways, which pathway shows the reaction that has taken place with the help of an enzyme?

• Pathway 1

• Pathway 2

• You cannot tell from these graphs.

• Both reactions involved an enzyme.

Tags

NGSS.HS-PS1-5

Which of these is NOT true?

• Enzymes can denature (change shape) when the temperature gets too high.

• Enzymes can only be used once in a chemical reaction. 

• Extreme pH can denature enzymes.

• Enzymes speed up chemical reactions. 

Tags

NGSS.HS-PS1-2

Based on the graph, what temperature does this enzyme work best? 

• 15 C

• 40 C

• 30 C

• 47 C

Based on the graph, at what temperature does this enzyme work best? 

• 15 C

• 40 C

• 30 C

Enzymes in your body probably work best at which of the following temperatures>

• 25^oC

• 98^oC

• 37^oC

• 210^oC

What are the enzymes called when they are at low temperature? 

• denatured

• Killed

• inactive

• normal

What ph do enzymes work best at?

• 1-3

• 4-5

• 6-8

• 9-14

What temperature do human enzymes work best?

• 39 degrees Celsius

• 12 degrees Celsius

• 20 degrees Celsius

• 37 degrees Celsius

Enzymes are called____

• catalysts

• products

• substrates

• reactants

Tags

NGSS.HS-PS1-5