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TLS Online TPP Program

#Question id: 3681

 A mutated E. coli cell carries out and completes DNA replication, but the lagging strands are found to contain more errors than normal. These errors are not found evenly distributed throughout the lagging strands, but are found in clusters. Which enzymatic activity is missing from this cell?

#Section 3: Genetics, Cellular and Molecular Biology

  1. the 3’→ 5’ exonuclease activity of pol III

  2. the 5’→ 3’ exonuclease activity of pol III

  3. the 3’→ 5’ exonuclease activity of pol I

  4. the 5’→ 3’ exonuclease activity of pol I

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TLS Online TPP Program

#Question id: 14802

#Section 5: Bioprocess Engineering and Process Biotechnology

Column I                                                                                  column II
A. Hydrophobic interaction chromatography (HIC)          1. gradient stepwise
B. Ion exchange chromatography                                       2. isocratic
C. Gel filtration chromatography                                         3. stepwise
D. Affinity chromatography                                                  4.  Gradient stepwise

A       B       C      D
1        2       3       4
3        1       2       4
1       4        2       3
1       3        4       2
TLS Online TPP Program

#Question id: 14803

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

The percentage SIMILARITIES and IDENTITIES, respectively, between the two peptide sequences given below will be ______% and _____%.

Peptide I :
Ala-Ala-Arg-Arg-Gln-Trp-Leu-Thr-Phe-Thr-Lys-Ile-Met-Ser-Glu

Peptide II:
Ala-Ala-Arg-Glu-Gln-Tyr-Ile-Ser-Phe-Thr-Lys-Ile-Met-Arg-Asp
TLS Online TPP Program

#Question id: 14804

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

Calculate the percentage sequence identity for the pairwise alignment given below: 
                       H E L L O _
                       Y E L L O W
TLS Online TPP Program

#Question id: 14844

#Section 1: Engineering Mathematics

An urn contains 25 balls numbered 1 through 25. Two balls are drawn from the urn with replacement. The probability of getting at least one odd is
TLS Online TPP Program

#Question id: 14845

#Section 1: Engineering Mathematics

Four persons are chosen at random from a group containing 3 men, 2 women and 4 children. The chance that exactly 2 of them will be children is
TLS Online TPP Program

#Question id: 14846

#Section 1: Engineering Mathematics

Let A and B be events with P(A) =1/2 P(B) = 1/3 and   Then P(A/B) is