Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 16365
TLS Online TPP Program

#Question id: 18219

Pseudoknot loop refers to 

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
  1. Base pairing formed between loop residues within a hairpin loop and residues outside the hairpin loop
  2. Hydrogen bonded interaction formed between loop residues of two hairpin structures
  3. Interactions between loop residues of a hairpin loop and a bulge loop
  4. None of the above 
More Questions
TLS Online TPP Program

#Question id: 12906

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

An alternative method labeling strategy used in karyotyping and gene localisation is _______
TLS Online TPP Program

#Question id: 12907

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

The binding of a regulatory protein or transcription factor to a specific DNA site results in a complex which may be analyzed by the technique termed as _____
TLS Online TPP Program

#Question id: 12908

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

Which statement is incorrect about CRISPR?
TLS Online TPP Program

#Question id: 12909

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

According to the diagram, arrange the steps in correct order: 


1. DNA is then digested by the Cas9 nuclease at specific points on both DNA strands. 
2. Homologous recombination to repair the break and incorporate the new DNA sequence then follows. 
3.The nuclease Cas9 is targeted to DNA by a guide RNA consisting of a specific 20 nucleotide spacer/targeting sequence (crRNA).
 4. That identifies the DNA to be modified, linked to a trans-activating (tracrRNA) sequence necessary for the recruitment and stability of Cas9 nuclease.
TLS Online TPP Program

#Question id: 12910

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

Match the following:
A. RNA analysis               i. Sexing or cell mutation sites               a. Expressed Sequence tag
B. Forensic science           ii. mRNA analysis                                     b.  Analysis of DNA from blood
C. Gene discovery              iii. DNA profiling                                       c. Active latent viral infections
D. Single-cell analysis     iv.  RT–PCR                                             d. Sex determination of unborn
TLS Online TPP Program

#Question id: 12911

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

Match the following:
A. DNA polymerases              i. Alkaline phosphatase        a.RNA-dependent DNA polymerase, used in cDNA synthesis
B. Reverse transcriptase        ii. T4 DNA ligase                    b. Thermostable DNA polymerase used in PCR
C. Ligases                                 iii.  AMV-RT                            c. Removes 5′-phosphates from DNA and RNA
D. Phosphatases                     iv. Taq DNA pol                      d. Links 5′-phosphate and 3′-hydroxyl ends via phosphodiester bond