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TLS Online TPP Program

#Question id: 27364

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

#XL - T Zoology
  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

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TLS Online TPP Program

#Question id: 2327

#XL - T Zoology

9 + 2 arrangement refers to the:
TLS Online TPP Program

#Question id: 27524

#XL - U Food Technology

Which of the following statements is correct?
TLS Online TPP Program

#Question id: 20253

#XL - P Chemistry

AB, A2 and B2 are diatomic molecules. If the bond enthalpies of A2, AB & B2 are in the ratio 1 : 1 : 0.5 and enthalpy of formation of AB from A2 and B2 is – 100 kJ/mol–1. What is the bond enthalpy of A2.
TLS Online TPP Program

#Question id: 11639

#XL - S Microbiology

You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, using many short extensions of the cytoplasm, each featuring the 9+2

filament pattern. It has well-developed organelles and three nuclei, one large and two small. This organism is most likely to be a member of which group?
TLS Online TPP Program

#Question id: 5531

#XL - T Zoology

The trophoblast forms to the