QUIZ- 40 [practice questions]

In WHO guidelines for the herbal drugs, contaminants include

Purines and Pyrimidine bases

Amino acids

Pentoses

Pesticidal residues, arsenic heavy metals, microbial load

The ratio of lecithin to sphingomyelin in amniotic fluid is measured

To obtain neonatal lipid profile

To assess fetal maturity and respiratory distress syndrome

To obtain age of the fetus

As a diagnostic marker for Tay-Sach's disease

Diagnostic strips such as Diastrix/Clinistix, used commonly to monitor diabetes, work of which of the following principles :-

The strips are coated with glucose oxidase, peroxidase and o-toluidine. Any glucose in the test Solution when exposed to the strips, gets oxidized leading to the release of hydrogen peroxide, the latter in turn oxidizes to o-toluidine to yield a blue color

The strips are coated with glucose epimerase and thymol blue, which when exposed to glucose, epimerize resulting in blue colour

The strips are coated with phenolphthalein analogue, which when exposed to acidic glucose solution, yield a blue colour

The strips are coated with leucine synthase and ninhydrin. Glucose, if any in the test solution gets converted into amino acids, which in turn react with ninhydrin to yield its blue colour.

Chemotaxis is a phenomenon that refers to

Directed movement in response to a chemical stimulus

Taxonomic classification of biochemical

Large in-flux of a chemical molecule within bacterial cells

Adherence of bacterial proteins to host cells

The usefulness of 5-fluorouracil as an anti tumour agent can be attributed to one of the following mechanisms

It inhibits hypoxanthine guanine phophoribosyltransferase directly

It is a prodrug that gets converted to fluoro-2'-deoxy uridylic acid, which is a suicide substrate for thymidylate synthase

It gets incorporated into RNA leading to faulty transcription and translation into non-standard Amino acids

It gets converted into tetrafluoro uridylate, which inhibits purine nucleoside phosphorylase

The characteristic odour of onion bulbs is attributed to

Quercetin glycosides

Furostanol glycosides

Heterogeneous sulpahted polysaccharides

Alkyl or alkenyl disulphides

The chief constituent of the seeds strophanthus gratus or woods of Acokantheraschimiperi belonging to the family Apocynaceae is G-stropanthin. On hydrolysis, it gives

Scallarenin

Ouabagenin

Cannogenin

Diosgenin

The duration of action of sublingual nitroglycerin tablet is

8-10 hours

4-8 hours

10-30 minutes

3-5 minutes

Identify the adrenergic receptor, whose agonists can be missed used by sportsmen for Anabolic effects.

Alpha1

Alpha2

Beta 1

Beta 2

When the urinary pH becomes 8.0, significant increase in the excretion of the drugs takes place

Morphine

Aspirin

Mepyramine

Mecamylamine

QUIZ- 40 [practice questions]

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