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TLS Online TPP Program

#Question id: 3867

RNA polymerase from E. coli (core enzyme alone) has all of the following properties except that it:

#SCPH01 Biochemistry

  1. can extend an RNA chain and initiate a new chain.

  2. is required for the synthesis of mRNA, rRNA, and tRNA in E. coli.

  3. produces an RNA polymer that begins with a 5'-triphosphate.

  4. recognizes specific start signals in DNA.

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TLS Online TPP Program

#Question id: 1753

#SCPH05 I Biotechnology

In the germinal center, B-cells become memory cells under the influence of:
TLS Online TPP Program

#Question id: 1754

#SCPH01 Biochemistry

High affinity B-cell clones in mammals are usually generated by:
TLS Online TPP Program

#Question id: 1754

#SCPH05 I Biotechnology

High affinity B-cell clones in mammals are usually generated by:
TLS Online TPP Program

#Question id: 1755

#SCPH01 Biochemistry

Prior to class switching, B-cells express:
TLS Online TPP Program

#Question id: 1755

#SCPH05 I Biotechnology

Prior to class switching, B-cells express:
TLS Online TPP Program

#Question id: 1756

#SCPH01 Biochemistry

Which of the following is the cytokine that is most involved in the class switch to IgE production?