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TLS Online TPP Program

#Question id: 2621

The leaky expression of lac genes ensures that,

#Unit 2. Cellular Organization

  1. There is a normal level of b-galactosidase in the cell even in the absence of lactose

  2. Only allolactose binds to the Lac repressor and triggers a change in the shape of that protein.

  3. Allolactose has permanently altered the shape of the repressor.

  4. Only low level of b-galactosidase in the cell even in the absence of lactose.

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TLS Online TPP Program

#Question id: 4201

#Unit 3. Fundamental Processes

The role of GTP in the translocation step of protein synthesis is to supply energy for
TLS Online TPP Program

#Question id: 12202

#Unit 6. System Physiology – Plant

Auxin-responsive genes typically have
TLS Online TPP Program

#Question id: 3057

#Unit 2. Cellular Organization

Mean generation time of bacteria is 20 min. 6 hours of incubation, the bacterial population increases from 10^3 cells to
TLS Online TPP Program

#Question id: 19476

#Unit 12. Applied Biology

The cry genes (or Cry proteins) have so far been grouped into 18 distinct groups, which either code for a 
TLS Online TPP Program

#Question id: 18899

#Unit 13. Methods in Biology

Cobalt-57 is a radioactive element  Used as a tracer to diagnose