Potato Lab & Enzymes QUIZ (HB 22-23)

Which of these is most likely an enzyme?  

• Sucrose

• Galactose

• Fructose

• Amylase

Letter D...

• active site

• enzyme

• substrate

• products

Letter B...

• active site

• enzyme

• substrate

• products

Letter c...

• active site

• enzyme

• substrate

• products

What is a substance called if it speeds up a chemical reaction?

• reusable

• catalyst

• specific

• fragile

An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 

• true

• false

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

• a substrate
• an enzyme
• a product
• an active site

What happens when enzymes are heated to a temperature beyond their range of tolerance?

• The enzymes die.

• The shapes of the enzyme are altered and denature

• The enzymes' amino acid sequence changes.

• The enzymes remain the same

How do enzymes increase the speed of chemical reactions?

• reducing the number of products   

• lowering the activation energy

• increasing the temperature of the cell

• increasing the concentration of reactants 

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.