Factors Affecting Enzyme Activity

Question 1

An increase in substrate concentration generally:

• AIncreases the rate of enzyme reaction
• BStops the reaction
• CDenatures the enzyme
• DRemoves the active site

Question 2

At high substrate concentration, the active sites of enzymes become:

• AOccupied
• BDestroyed
• CDenatured
• DInactive permanently

Question 3

When all active sites are occupied, additional substrate molecules:

• ADo not find free active sites
• BAlways increase the reaction rate
• CDestroy the enzyme
• DBecome cofactors

Question 4

The condition in which all active sites of an enzyme are occupied is called:

• ASaturation of active sites
• BDenaturation
• CAnabolism
• DInhibition

Question 5

After saturation of active sites, increasing substrate concentration:

• ADoes not increase the reaction rate
• BAlways doubles the reaction rate
• CDenatures all enzymes
• DChanges the optimum pH