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: 10247

#XL - T Zoology

Deciduous oak habitats in southern Europe are superior to evergreen oak habitats from the perspective of the blue tit, a small songbird. As a result, blue tit populations in deciduous oak habitats have more potential for __________ and serving as __________ populations.

TLS Online TPP Program

#Question id: 10248

#XL - T Zoology

Factors involved in an animal’s foraging "strategy" are

TLS Online TPP Program

#Question id: 10250

#XL - Q Biochemistry

Glycolysis involves a series of reactions catalyzed by enzymes located in,

TLS Online TPP Program

#Question id: 10251

#XL - Q Biochemistry

Initial phase of glycolysis, substrates from different sources are channeled into triose phosphate. For each molecule of sucrose that is metabolized, four molecules of triose phosphate are formed. This process how much requires ATP input?

TLS Online TPP Program

#Question id: 10253

#XL - Q Biochemistry

Two pathways for the splitting of sucrose are known in plants, both of which take part in the use of sucrose from phloem unloading;

TLS Online TPP Program

#Question id: 10254

#XL - Q Biochemistry

Sucrose is split into its two monosaccharide units—glucose and fructose—which can readily enter the glycolytic pathway. Two pathways for the splitting of sucrose are known in plants, both of which take part in the use of sucrose from phloem unloading; Invertase pathway and sucrose synthase pathway, some statements are given about these pathways, which of the following is incorrect?