M. Pharmacy Quiz-4

What is the primary mechanism of action of cholinesterase inhibitors?

Blocking acetylcholine receptors

Increasing acetylcholine levels

Activating muscarinic receptor

Inhibiting dopamine receptors

Which type of receptor is coupled to Gi protein? Muscarinic M2 receptor

Muscarinic M2 receptor

Beta-adrenergic receptor

Insulin receptor

Nicotinic acetylcholine receptor

What is the role of Gq protein in cellular signaling?

Activating adenylate cyclase

Inhibiting phospholipase C

Activating phospholipase C

Inhibiting protein kinase A

Which enzyme is involved in the metabolism of arachidonic acid?

Cyclooxygenase (COX)

Phospholipase A2 (PLA2)

Lipoxygenase (LOX)

All of the above

What is the mechanism of action of PDE5 inhibitors?

Increasing cGMP levels

Decreasing cGMP levels

Activating protein kinase G

Inhibiting adenylate cyclase

M. Pharmacy Quiz-4

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