Practice Questions

TLS Online TPP Program

#Question id: 1099

How does the toxin of Vibrio cholerae cause profuse diarrhea?

#XL - Q Biochemistry

It modifies a G protein involved in regulating salt and water secretion.
It modifies adenylyl cyclase and triggers excess formation of cAMP.
It signals IP3 to act as a second messenger for the release of calcium.
It modifies a ligand-gated ion channel.

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TLS Online TPP Program

#Question id: 5846

#XL - T Zoology

The bacteriophage can lysogenize after infecting a bacterium, i.e. integrate into the host bacterial chromosome by site-specific recombination, and may reside there for many generations before an excision event regenerates the viral genome in an infective form. Which one of the following is not a component of these events?

TLS Online TPP Program

#Question id: 5847

#XL - T Zoology

A Holliday structure is a(n)

TLS Online TPP Program

#Question id: 5922

#General Aptitude

The last day of a Century year can not be:

TLS Online TPP Program

#Question id: 5923

#General Aptitude

What day on 23/04/1990 ?