QUIZ Week 16 Review (12/5/25)

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

• reusable
• catalyst
• specific
• fragile

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.

Based on the graph, what is the optimal temperature for this enzyme? 

• 15^oC
• 40^oC
• 30^oC
• 35^oC

In the diagram, what is letter A? 

• product
• substrate
• enzyme-substrate complex
• active site

Enzymes are...

• nucleic acids
• proteins
• lipids
• carbohydrates

Tags

NGSS.HS-LS1-6

What is the function of an enzyme?

• enzymes break themselves into small pieces
• enzymes slow down chemical reactions
• enzymes speed up chemical reactions
• enzymes combine products to form reactants 

What happens when enzymes are heated to too high a temperature?

• The enzymes die.
• The shapes of the enzyme are altered (denature)

• The enzymes' amino acid sequence changes.
• The enzymes remain the same

Letter D...

• active site
• enzyme
• substrate
• products

Letter B...

• active site
• enzyme
• substrate
• products

Tags

NGSS.MS-PS1-5

Letter C...

• active site
• enzymes
• substrate
• products

Tags

NGSS.HS-PS1-2