Enzymes

Enzymes are considered to be 

• Lipid

• Carbohydrate
• Protein
• Nucleic Acid

What is the purpose  of an enzyme?

• control reaction rates

• raise activation energy
• speed up reactions
• control how many reactions occur

Tags

NGSS.MS-LS1-7

Where do substrates bind on an enzyme?

• voltage-gated channels
• surface receptor
• calcium channels
• active site

How do enzymes increase the speed of chemical reactions?

• by reducing the number of products   

• by reducing the activation energy

• by increasing the temperature of the cell

• by increasing the concentration of reactants 

Tags

NGSS.HS-PS1-5

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

• substrate (s)

• enzyme(s)

• product(s)

• inhibitor(s)

Allosteric inhibitors block the active site

• true

• false

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 cooled down?

• The enzymes die

• The shapes of the enzyme are altered or denatured
• The enzyme slows down

• The active site is altered

Tags

NGSS.HS-PS1-5

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

• 15 C
• 40 C
• 30 C
• 47 C

Tags

NGSS.HS-PS1-5

Letter D...

• active site
• enzyme
• substrate
• products

Tags

NGSS.MS-PS1-5