#Question id: 23650
#General Aptitude
#Question id: 584
#Unit 1. Molecules and their Interaction Relevant to Biology
The non-enzymatic hydrolysis of sucrose into glucose and fructose is an example of a pseudo first-order reaction because
#Question id: 1255
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to the mechanism of action of cholera toxin.
A. cholera toxin is a homodimeric protein, target G proteins, interfering with normal signaling in host cells.
B. cholera toxin associates with a small G protein, known as ARF6.
C. association with ARF6 activates cholera toxin, which catalyzes the transfer of ADP-ribose from NAD+ to the critical Arg residue in the P loop of the alpha subunit of Gs.
D. ADP-ribosylation blocks the GEF activity of Gs and thereby renders Gs permanently inactive.
E. This results in continuous activation of the adenylyl cyclase of intestinal epithelial cells, chronically high cAMP, and active PKA dephosphorylates the CFTR Cl- channel and a sodium-proton exchanger in the intestinal epithelial cells.
Which of the following combination is correct?
#Question id: 10907
#Unit 6. System Physiology – Plant
The mechanism of phloem translocation in angiosperms is best explained by the pressure-flow model, this model is an example of,
#Question id: 3042
#Unit 2. Cellular Organization
Mycotoxins are formed during the end of