Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 41203
TLS Online TPP Program

#Question id: 796

Which statement best describes the distinction between the purposes of the two RNAi pathways within the eukaryotic cell?

#SCPH05 I Biotechnology

  1. miRNA-mediated gene silencing represents a back-up pathway should siRNA-mediated gene silencing be unsuccessful at silencing the target dsRNA

  2. siRNA and miRNA-mediated gene silencing pathways must both be active to successfully silence the target dsRNA

  3. miRNA and siRNA-mediated gene silencing represent evolutionary-independent pathways which confer identical silencing mechanisms on the target dsRNA

  4. siRNA-mediated gene silencing represents a cell defence mechanism against exogenous dsRNA; miRNA-mediated gene silencing is an integral gene expression regulation process

More Questions
TLS Online TPP Program

#Question id: 377

#SCPH05 I Biotechnology

The aqueous solution with the highest pH is:
TLS Online TPP Program

#Question id: 377

#SCPH05 I Biotechnology

The aqueous solution with the highest pH is:
TLS Online TPP Program

#Question id: 378

#SCPH05 I Biotechnology

Which of the following statements about buffers is true?
TLS Online TPP Program

#Question id: 378

#SCPH05 I Biotechnology

Which of the following statements about buffers is true?
TLS Online TPP Program

#Question id: 379

#SCPH05 I Biotechnology

A compound has a pKa of 7.4. To 100 mL of a 1.0 M solution of this compound at pH 8.0 is added 30 mL of 1.0 M hydrochloric acid. The resulting solution is pH:
TLS Online TPP Program

#Question id: 379

#SCPH05 I Biotechnology

A compound has a pKa of 7.4. To 100 mL of a 1.0 M solution of this compound at pH 8.0 is added 30 mL of 1.0 M hydrochloric acid. The resulting solution is pH: