Which of the following enzyme has a unique ability to introduce positive and negative supercoiling of the DNA and it is the target for antibacterial agents such as ciprofloxacin/quinolones?

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#Question id: 13053

#SCPH28 | Zoology

What would the generally expected effect on the PCR reaction be of adjustments that increase the temperature of the annealing phase and the length of the elongation phase?

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#Question id: 2326

#SCPH06 I Botany

The movement of chromosomes during mitosis is due to the:

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#Question id: 4345

#SCPH05 I Biotechnology

For a repressible operon to be transcribed, which of the following conditions must occur?

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#Question id: 771

#SCPH28 | Zoology

MicroRNAs are:

P. synthesized as long pri-miRNAs;

Q. transcribed by RNA polymerase II;

R. synthesized from pre-microRNAs by an RNase III enzyme Drosha in the cytoplasm;

S. synthesized from pri-miRNAs by an enzyme Dicer in the nucleus.

TLS Online TPP Program

#Question id: 10809

#SCPH05 I Biotechnology

Sieve element sap is rich in sugars and other organic molecules, These molecules represent an energy investment for the plant. How their loss be prevented when sieve elements are damaged?