A radioactive isotope decays at a rate proportional to the amount of isotope present. If the concentration of isotope is C (mg l^-I), its rate of decay is:

                                                                    

A solution of the isotope ³²p is used to radioactively label DNA for hybridisation studies. The half-life of ³²p is 14.3 days. According to institutional safety requirements, the solution cannot be discarded until the activity is 1% its present value. How long will this take?____________________

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#Question id: 16072

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following is not a benefit of FASTA over BLAST?

TLS Online TPP Program

#Question id: 16073

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The initiation of FASTA format has ___ symbol.

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#Question id: 16074

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the items in Group 1 with an appropriate description in Group 2 

Group 1                                                    Group 2 

P. PSI-BLAST                                    1. ungapped, aligned motif 

Q. CLUSTALW                                 2. Profiles

R. BLOCK                                         3. Heuristic method

S. FASTA                                           4. Multiple sequence alignment

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#Question id: 16436

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The PCR consists of three defined sets of times and temperatures, termed steps

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#Question id: 16438

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

^{A DNA sample having mass 1 picogram undergoes PCR, the eluted DNA is weighted about 1 microgram, the minimum number of cycles required}

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#Question id: 16440

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

In RNA isolation, for protein free solution what will be the ratio at  nm A260/A280