Enzymes Test Recovery

What is the purpose of enzymes in the body?

• To slow down reactions
• To speed up reactions
• To prevent reactions
• To build DNA

What term is given to enzymes that describe their purpose?

• Catalyst
• Effective
• Protein
• Adventure

What effect do enzymes have on activation energy?

• They increase the amount needed
• They decrease the amount needed
• They do not impact activation energy
• They do not require activation energy

What scale measures how acidic or alkaline (basic) a substance is?

• Fahrenheit
• Celsius
• pH
• Kelvin

Each enzyme operates in an optimal range. Pepsin, an enzyme found in stomach acid, would best operate at which of the following pH values?

• 3
• 7
• 10
• 14

According to the chart, what is the optimal pH for the enzyme salivary amylase?

• 2
• 5
• 7
• 9

In general, what happens to the activity level of an enzyme as temperature increases towards the optimal temperature?

• It Increases
• It denatures
• It decreases
• It stays the same

When the environmental pH or temperature around an enzyme becomes to extreme, enzymes may _ _ _ _ _ _ _.

• Destruct
• Dissappear
• Denature
• Discolor

An increase in the concentration of substrate and/or enzyme in a reaction will cause the reaction to _ _ _ _ _.

• Slow Down
• Speed Up
• Stop
• No effect

What molecule prevents enzymes from bonding with substrates therefore preventing reactions from happening?

• Competitive Inhibitor
• Preventative Molecule
• Stop Codon
• Substrate Blocker