Enzyme Activity

Which of the factors does NOT affect enzymatic activity?

• Temperature
• pH
• Concentration
• Color

Tags

NGSS.HS-PS1-5

Enzymes need certain environmental conditions in order to function properly.  What happens when enzymes are heated to a high temperature?

• they die
• they denature
• they change their amino acid sequence
• they work better

What happens when an enzyme changes shape?

• The reaction speeds up
• The reaction slows down
• The enzyme dies
• The enzyme has to change back its shape to work

What is it called when an enzyme's shape is changed?

• Destroy
• Denature
• Delete
• Demolish

This is the most important factor about an enzyme that determines what job it will do in the body.

• The sugars that make up the enzyme
• The nucleic acids that make up the protein
• The shape of the enzyme
• The fatty acids that make up the protein

Letter D...

• active site
• enzyme
• substrate
• products

Letter B...

• active site
• enzyme
• substrate
• products

Letter E...

• active site
• enzyme
• substrate
• products

Enzyme A digests proteins in the stomach (environment with a pH of 2).  Enzyme B digests proteins in the small intestine (environment with a pH of 8). Which of the following is NOT true:

• Enzyme A would be denatured in the small intestine.
• Enzyme A works best in acidic conditions.
• Enzyme A can also work in the small intestine.
• Enzyme A helps in the hydrolysis of proteins.

Sucrase has an optimum temperature of 37 C and an optimum pH of 6.2. What would happen if the pH changed to 3?

• Sucrase would continue to work the same
• The reaction sucrase catalyzes would speed up
• The reaction sucrase catalyzes would slow down

Tags

NGSS.HS-PS1-5