Enzymes and how they are affected by temperature and pH

What is the purpose of an enzyme?

• give permission for the reaction

• raise activation energy

• speed up reactions

• control how many reactions occur

Tags

NGSS.HS-LS1-1

What is the name for the mechanism of enzyme activity?

• Lock and key

• jigsaw puzzle

• hammer and nail

• two hands pattern

can a change in pH alter the active site of an enzyme

• yes
• no

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-PS1-5

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

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

• 15 C
• 40 C
• 30 C
• 47 C

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

• denatured
• Killed
• inactive
• normal

Enzymes have a optimum ph

• true

• false

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