Enzymes

The area that the substrate fits into on the enzyme is called the:

• Active Site
• Allosteric Site
• DiSulphide Bridge
• β-Pleated Sheet

Tags

NGSS.MS-LS3-1

Enzymes catalyze reactions by ___________ Activation Energy.

• Increasing
• Decreasing

Tags

NGSS.HS-PS1-4

Enzymes speed up reaction rates by changing:

• Activation Energy
• pH
• Hydrogen Bonds
• Kinetic Energy

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

At low temperatures enzyme activity declines because of: (Hint: What happens to the movement of molecules at low temperatures?)

• Denaturation-enzyme unfolds

• Decreased Motion-the enzyme and substrate do not run into each other as often

• Increased H-Bonding
• Dissociation of Ionic Compounds

At high temperatures enzyme activity declines because of:

• Denaturation
• Decreased Kinetic Motion
• Increased H-Bonding
• Dissociation of Ionic Compounds

Tags

NGSS.HS-PS1-5

Most enzymes have the ending:

• -ase
• -ose
• -ic acid
• -ate

The molecule an enzyme is working on is called the: (Hint: This is what fits into the active site)

• Substrate
• Solvent
• Allosteric Inhibitor
• CoEnzyme

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

• reusable
• catalyst
• specific
• fragile

Tags

NGSS.HS-PS1-5

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.MS-PS1-2

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 .
  

Tags

NGSS.MS-PS1-2