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TLS Online TPP Program

#Question id: 4373

Which of the following is true about transcription?

#SCPH28 | Zoology

  1. A repressor protein activates transcription of a negatively regulated gene.

  2. A positively regulated gene can be transcribed only in the absence of active repressor.

  3. In the absence of an activator, a negatively regulated gene is poorly transcribed.

  4. The initiation of transcription of regulated genes is controlled by regulatory proteins which bind to specific DNA sequences.

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TLS Online TPP Program

#Question id: 11379

#SCPH06 I Botany

Which of the following is NOT a prediction arising out of Wilson-MacArthur's -Theory of Island Biogeography?
TLS Online TPP Program

#Question id: 612

#SCPH05 I Biotechnology

 The quaternary structure of hemoglobin changes from the T state to the R state ________.
TLS Online TPP Program

#Question id: 6962

#SCPH01 Biochemistry

In which way is the organizer region of the sea urchin similar to that in frogs?
TLS Online TPP Program

#Question id: 4353

#SCPH01 Biochemistry

The cAMP receptor protein (CRP) is said to be responsible for positive regulation of the lac operon because __.
TLS Online TPP Program

#Question id: 11143

#SCPH28 | Zoology

In a resting potential, an example of a cation that is more abundant as a solute in the cytosol of a neuron than it is in the interstitial fluid outside the neuron is ________.