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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.

More Questions
TLS Online TPP Program

#Question id: 7143

#Unit 5. Developmental Biology

The development of drugs to block the activity of vascular endothelial growth factor (VEGF) has been applied to the control of the growth of cancers. What is the rationale for such a strategy?
TLS Online TPP Program

#Question id: 1565

#Unit 4. Cell Communication and Cell Signaling

Which of the following are symptoms of inflammation that might appear in such art?
TLS Online TPP Program

#Question id: 11873

#General Aptitude

A, B and C start running at the same time and at the same point in the same direction in a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds. After what time will they meet again at the starting point?
TLS Online TPP Program

#Question id: 2498

#Unit 2. Cellular Organization

Kinetochores assemble at the:
TLS Online TPP Program

#Question id: 28197

#Unit 5. Developmental Biology

Which of the following properties must have the responding cell?   
a) Capability to induce neighbouring cell
b) receptor protein for the inducing factor
c) ability to respond to the signal
d) have signalling molecules