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TLS Online TPP Program

#Question id: 4319

Why are BRCA1 and BRCA2 considered to be tumor-suppressor genes?

#Unit 3. Fundamental Processes

  1. Their normal products participate in repair of DNA damage.

  2. The mutant forms of either one of these prevent breast cancer.

  3. The normal genes make estrogen receptors.

  4. They block penetration of breast cells by chemical carcinogens.

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TLS Online TPP Program

#Question id: 2649

#Unit 2. Cellular Organization

Which operon behaves similar to Bacillus subtilis trp operon in terms of attenuation?
TLS Online TPP Program

#Question id: 2650

#Unit 2. Cellular Organization

Lac operon is an example of
TLS Online TPP Program

#Question id: 2651

#Unit 2. Cellular Organization

In the presence of lactose, how long does it take for the lac operon to be expressed?
TLS Online TPP Program

#Question id: 2652

#Unit 2. Cellular Organization

 Which of these acts as an inducer of the lac operon?
TLS Online TPP Program

#Question id: 2653

#Unit 2. Cellular Organization

The sequence of the structural genes in the lac operon is
TLS Online TPP Program

#Question id: 2654

#Unit 2. Cellular Organization

Regulation of the lac operon can be envisioned as regulation of enzyme synthesis by its