Enzyme

Label the parts of the enzyme model

a

b

c

d

Enzyme

Active site

Substrate

Products

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Tags

NGSS.HS-PS1-4

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.
  
• The optimum pH of the enzyme is 5.8
  
• The enzyme’s activity increases as pH increases 5.0 to 9.0
  
• The enzyme’s activity is greater around pH of 8.0 .
  

Enzymes are...

• nucleic acids
• proteins
• lipids
• carbohydrates

Every enzyme has a optimal temperature and pH. 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

Enzymes are ​ (a)   that ​ (b)   chemical reactions by​ (c)   the amount of activation energy required to start the reaction.

• proteins
• speed-up
• decreasing
• carbohydrates
• increasing
• slow-down

Click on the temperature that this enzyme is having optimum activity.

Tags

NGSS.HS-PS1-5

What is the basic building block of enzymes?

• Lipids

• Amino acids

• Carbohydrates

• Nucleic acids

Tags

DOK Level 1: Recall

What happens to an enzyme when it is denatured?

• It becomes more active

• It loses its shape and function

• It becomes a substrate

• It doubles its activity

Tags

DOK Level 1: Recall