12 Enzymes 2

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 

Tags

NGSS.HS-PS1-5

Enzymes are composed of which of the following monomers (building blocks)?

• amino acids

• carbohydrates

• nucleotides

• monosaccharides

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

• substrate
• product
• codon
• none of the above

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

• 15 C

• 40 C

• 30 C

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 represents the

• active site

• enzyme

• substrate

• products

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

• The optimum pH for this enzyme activity is 6.6.

• The optimum pH for this enzyme activity 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 .

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

What is another term for enzymes?

• chemical catalysts

• microorganisms

• biological catalysts

• inorganic catalysts