Question

(> Options v No results Question 20 Which of the following describes the process that occurs when single ligands bind and activate two adjacent receptors? Angiogenesis Apoptosis Phosphorylation Dimerization Question 21 Risks associated with arsenic trioxide should be further evaluated if an electrocardiogram shows a QTc interval between: 300-399 milliseconds. 400-49 milliseconds 200-299 milliseconds. 500-599 milliseconds Question 22 What is the drug classification of dolasetron and ondametrion H2 blockers Neurokinin-1 antagonists Phenothiaines Serotonin antagonists se to search 8. RI 16 5'

Answer 1

20) The process that occurs when a single ligand binds and activates two adjacent receptors is Phosphorylation (option C).

A is incorrect as angiogenesis means formation of blood vessel

B is incorrect as apoptosis means cell death.

D is incorrect as dimerization is an addition reaction in which two molecules of same compound react with each other to form another compound.

21)The answer is option D( 500-599 ms)

As per FDA , treatment with arsenic trioxide should be withhold if QTc is greater than 500msec.

The other options are incorrect as normal QTc is below 400 to 450 msec.

22) Dolasetron and Ondansetron belongs to class of 5 HT-3 Seretonin antagonists (option D)

A is incorrect as H 2 bockers (decreases acid production in stomach) includes famotidine, ranitidine etc

B is incorrect as Neurokinin 1 antagonists (prevent nausea and vomitings associated with chemotherapy) includes Aprepitant, Casopitant etc

C is incorrect as Phenothiazenes (type of antipsychotics) include prochlorperazine, chlorpromazine, fluphenazine etc.