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TLS Online TPP Program

#Question id: 767

With respect to how miRNAs work, which, if any, of the following statements, is false?

#SCPH05 I Biotechnology

  1. An miRNA is initially composed of two RNA strands, a passenger strand that will be destroyed and a complementary RNA, the guide strand, that is required for it to work.

  2. an active miRNA regulates target protein-coding genes by binding to complementary sequences in the mRNA

  3. A single miRNA normally binds to transcripts from just one target gene

  4. A single type of mRNA can be regulated by multiple different miRNAs.

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TLS Online TPP Program

#Question id: 9167

#SCPH06 I Botany

If you conclude that vegetation at every point on Earth exactly resembles the predicted biome distribution in a climograph, then ________.
TLS Online TPP Program

#Question id: 11202

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

If you experimentally increase the concentration of K+ inside a cell while maintaining other ion concentrations as they were, what would happen to the cell's membrane potential?
TLS Online TPP Program

#Question id: 23257

#SCPH06 I Botany

Centromeric probes are useful in identifying 
TLS Online TPP Program

#Question id: 15268

#SCPH01 Biochemistry

During DNA isolation, phenol / chloroform extraction is performed to remove
TLS Online TPP Program

#Question id: 8694

#SCPH06 I Botany

Which of the following is (are) problematic when the goal is to construct phylogenies that accurately reflect evolutionary history?