Q- Which one of the following antifungal drugs acts by inhibiting the enzyme, 1, 3-beta-glucan synthase?
A- Amphotericin B
B- Caspofungin
C- Griseofulvin
D- Terbinafine
B- Caspofungin- It belongs to the echinocandins drug group which inhibits fungal cell wall synthesis through inhibition of 1, 3-beta-glucan synthase.
Q- Which one of the following agents prevents the release of neurotransmitter at all the cholinergic terminals?
A- Atropine
B- Botulinum toxin
C- Hemicholinium
D- Reserpine
B- Botulinum toxin- It is the only one on the list that acts by inhibition of the release of neurotransmitter at all the cholinergic terminals.
Q- Which one of the following muscarinic antagonists is mainly used in cases of COPD and asthma?
A- Benztropine
B- Glycopyrrolate
C- Ipratropium
D- Scopolamine
C- Ipratropium- It works mainly on the respiratory organ system in cases of asthma and COPD. Benztropine affects CNS and used in cases of Parkinsonism. Glycopyrrolate is used as a preoperative to reduce airway secretions and in children to reduce saliva and drooling. Scopolamine is used in motion sickness.
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