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TLS Online TPP Program

#Question id: 2673

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

#Unit 2. Cellular Organization

  1. A corepressor must be present.

  2. RNA polymerase must bind to the promoter, and the repressor must be inactive.

  3. RNA polymerase and the active repressor must be present.

  4. RNA polymerase cannot be present, and the repressor must be inactive.

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TLS Online TPP Program

#Question id: 31300

#Unit 5. Developmental Biology

During chick development, as cells converge to form the primitive streak, a depression called as:
TLS Online TPP Program

#Question id: 31301

#Unit 5. Developmental Biology

Which of the following acts as the equivalent of the amphibian Nieuwkoop center in chick?
TLS Online TPP Program

#Question id: 31302

#Unit 5. Developmental Biology

The mechanism of Mediolateral intercalation in the formation of the primitive streak is mediated by the activation of the:
TLS Online TPP Program

#Question id: 31303

#Unit 5. Developmental Biology

In birds, primitive groove is homologous to the:
TLS Online TPP Program

#Question id: 31304

#Unit 5. Developmental Biology

Hensen’s node is functionally equivalent to the which of the following structure of amphibian? 
TLS Online TPP Program

#Question id: 31305

#Unit 7. System Physiology – Animal

What is the membrane potential (threshold level) at which the S-A node discharges?