Enzyme Examples, Cofactors/Coenzymes, Inhibitors, and Feedback Inhibition

Which enzyme is responsible for breaking down carbohydrates in the mouth?

• Pepsin

• Lipase

• Trypsin

• Amylase

What is the role of lipase in digestion?

• Breaks down nucleic acids

• Breaks down carbohydrates

• Breaks down lipids

• Breaks down proteins

What is a cofactor in the context of enzyme activity?

• An inorganic molecule like zinc or iron

• A lipid that enhances enzyme activity

• An organic molecule like a vitamin

• A protein that inhibits enzyme activity

How do competitive inhibitors affect enzyme activity?

• They increase enzyme production

• They bind to the allosteric site

• They enhance substrate binding

• They block the active site

What is feedback inhibition in enzymatic pathways?

• A process where the final product inhibits an earlier step

• A mechanism that enhances enzyme activity

• A method to increase substrate concentration

• A way to permanently deactivate enzymes

How do ACE inhibitors help in managing high blood pressure?

• By promoting sodium retention

• By enhancing blood vessel constriction

• By increasing angiotensin II production

• By blocking angiotensin-converting enzymes

What is the mechanism of action of penicillin?

• It enhances bacterial cell wall synthesis

• It inhibits the enzyme transpeptidase

• It increases bacterial DNA replication

• It promotes bacterial protein synthesis