TLS Online TPP Program

#Question id: 891


The folding pathways of some proteins require two enzymes that catalyze isomerization reactions such as,

a) Peptide prolyl isomerase (PPI)  catalyzes the elimination of folding intermediates with inappropriate disulfide cross-links

b) Protein disulfide isomerase (PDI) enzyme that catalyzes the interchange, or shuffling, of disulfide bonds until the bonds of the native conformation are formed

c) Peptide prolyl cis-trans isomerase (PPI) catalyzes the interconversion of the cis and trans isomers of Proline residue peptide bonds

d) Peptide prolyl isomerase (PPI) can be a fast step in the folding of proteins that contain some Pro peptide bonds in the cis conformation

Which of the following combinations is correct about protein folding pathways?

#Part-B Specialized Branches in Biotechnology
  1. B and C     

  2. ONLY B

  3. B, C and D           

  4. A, B and D

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TLS Online TPP Program

#Question id: 18704

#Part-A Aptitude & General Biotechnology

If the weight of 1 mol bp is 660g What will the no. of moles in human genome having 3 x 109 bp

TLS Online TPP Program

#Question id: 18705

#Part-A Aptitude & General Biotechnology

What will weight in picogram in human genome 

TLS Online TPP Program

#Question id: 18706

#Part-A Aptitude & General Biotechnology

Sources of thermostable DNA polymerases with proofreading (3′–5′ exonuclease) activity are given match them correctly
DNA polymerase                          Source
a. Tma                                      i. Thermotoga maritima
b. Deep vent tm                      ii. Pyrococcus furiosus
c. Tli                                      iii. Thermococcus litoralis
d. Pfu                                      iv.  Pyrococcus sp
e. Pwo                                      v. Pyrococcus woesi

TLS Online TPP Program

#Question id: 18707

#Part-A Aptitude & General Biotechnology

primer dimers are formed when 

TLS Online TPP Program

#Question id: 18708

#Part-A Aptitude & General Biotechnology

PCR can be analysed amplification, Anneleaning, and extension and analysis is called

TLS Online TPP Program

#Question id: 18709

#Part-A Aptitude & General Biotechnology

qPCR can be done by 
i) cyanin dye or SYBR green – to measure amplification
ii) Taqman assay – measure extension
iii) molecular beacons - denaturation