Which of the following events occur when E. coli is starved for tryptophan?

I.  The ribosome translates leader peptide completely

II. Transcription reads through attenuator into trp EDCBA

III. Tryptophanyl tRNA is not formed

IV. A stem loop structure involving regions 3 and 4 is formed at attenuator site

TLS Online TPP Program

#Question id: 12911

#SCPH05 I 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

TLS Online TPP Program

#Question id: 663

#I Life Science/ Life Sciences Group – I-V

________ is a technique used to analyze the macromolecular structure of proteins in solution.

TLS Online TPP Program

#Question id: 3655

#SCPH05 I Biotechnology

The mismatched base is removed from the daughter strand of DNA by:

TLS Online TPP Program

#Question id: 6945

#SCPH06 I Botany

The portion of the Drosophila body plan which will produce the wing is called

TLS Online TPP Program

#Question id: 1606

#SCPH28 | Zoology

transporter associated with antigen processing(TAP) is ,