Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is

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#Question id: 375

#SCPH05 I Biotechnology

The aqueous solution with the lowest pH is:

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#Question id: 18610

#SCPH01 Biochemistry

In an experiment, it was found that the value of Tm for DNA is 45 ̊C, when cell have 22% GC content at the above Tm, then what will be the effect on the value of Tm if GC% increases to 60%

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#Question id: 20026

#SCPH01 Biochemistry

Which of the following technique is most sensitive, that can analyzed 2μg per ml of antigen?

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#Question id: 1547

#SCPH05 I Biotechnology

follicular dendritic cells (FDCs) secrete CXCL13 and its receptor, CXCR5, which is expressed on B cells, function of this interaction ?

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#Question id: 14828

#SCPH06 I Botany

Pili are usually longer than fimbriae and number only one or two per cell. Pili are involved in motility and DNA transfer. The type of motility, called 

1. Extrusion

2. Somersaulting

3. Twitching motility 

4. Gliding motility

Which combination from the following is correct?