Enzymes

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   
• reducing the activation energy
• increasing the temperature of the cell
• increasing the concentration of reactants 

Tags

NGSS.HS-PS1-5

Where do substrates bind on an enzyme?

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

This reaction shows a(n) ____________ reaction

• Catabolic
• Anabolic
• Dehydration Synthesis
• Halogenation

Tags

NGSS.HS-PS1-2

The current model of enzyme action is referred to as the:

• Induced Fit Model
• Lock & Key Model
• Singer-Nicolson Model
• Davson-Danielli Model

At high temperatures enzyme activity declines because of:

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

Tags

NGSS.HS-PS1-5

At low temperatures enzyme activity declines because of:

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

Most enzymes have the ending:

• -ase
• -ose
• -ic acid
• -ate

The molecule an enzyme is working on is called the:

• Substrate
• Solvent
• Allosteric Inhibitor
• CoEnzyme

Which explanation best fits the graph for pH's effect on an enzyme?

• As the pH gets closer to neutral more H-Bonds are broken
• Larger numbers of H+ & OH- ions distort the active site
• There are more collisions between substrates and active sites near the optimal pH
• Low pHs cause more H-Bonds to happen near the active site