Enzymes

Enzymes are

• nucleic acids
• proteins
• lipids
• carbohydrates

Which of the following binds to the active site of an enzyme? 

• substrate
• product
• codon
• none of the above

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

• 15 C
• 40 C
• 30 C

What is the function of an enzyme?

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

What happens when enzymes are heated to a high temperature?

• The enzymes die.
• The shapes of the enzyme are altered or denatured
• The enzymes' amino acid sequence changes.
• The enzymes remain the same

Letter E...

• active site
• enzyme
• substrate
• products

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 composed of which of the following monomers? 

• amino acids
• carbohydrates
• nucleotides
• monosaccharides

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

Where do substrates bind on an enzyme?

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