#Question id: 24524
#Unit 11. Evolution and Behavior
#Question id: 11902
#Unit 6. System Physiology – Plant
A chemiosmotic model
has been proposed to explain
Polar transport , following steps are involve in the transport of auxin
polarly;
a) IAA enters the cell either passively in the undissociated
form (IAAH) or by secondary active cotransport in the anionic form (IAA–)
b) The cell wall is maintained at an acidic pH by the
activity of the plasma membrane H+- ATPase
c) In the cytosol, which has acidic pH, the IAAH form
predominates
d) The anions exit the cell via auxin anion efflux carriers
that are concentrated at the basal ends of each cell in the longitudinal
pathway
Which of the following is the correct statements about the polarly transporting of auxin?
#Question id: 2855
#Unit 2. Cellular Organization
Which statements are correct about lac operator;
I. The site bound by the Lac repressor.
II. The lac operator overlaps the promoter, and so the repressor bound to the operator physically prevents RNA polymerase from binding to the promoter and thus inhibit the RNA synthesis.
III. Have 21-bp sequence with twofold symmetric and is recognized by four subunits of Lac repressor, two binding to each half-site.
IV. CAP binds as a dimer to a site similar in length to that of the lac operator, but different in sequence. This site is located some 60 bp upstream of the start site of transcription.
#Question id: 1044
#Unit 4. Cell Communication and Cell Signaling
Are all fungi detrimental (bad) for other organisms?
#Question id: 28875
#Unit 4. Cell Communication and Cell Signaling
Wnt proteins are modified by linkage of__