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TLS Online TPP Program

#Question id: 5841

How are the BRCA proteins and their genes implicated in breast cancer?

#XL - T Zoology

  1. The BRCA proteins damage DNA by generating double-stranded breaks which can lead to cancer.

  2. Cells become more susceptible to damage if the genes for these proteins are damaged.

  3. BRCA proteins inhibit excision repair mechanisms.

  4. BRCA proteins initiate recombination between non-homologous DNA sequences.

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TLS Online TPP Program

#Question id: 20178

#XL - P Chemistry

The de-Broglie wavelength associated with ball of mass 200 g and moving at a speed of 5 m hour–1 is of the order of (h = 6·625 x 10–34 Js)
TLS Online TPP Program

#Question id: 20179

#XL - P Chemistry

The third line of the Balmer series. in the emission spectrum of the hydrogen atom, is due to the transition from the
TLS Online TPP Program

#Question id: 20180

#XL - P Chemistry

The highest number of unpaired electrons are w present in
TLS Online TPP Program

#Question id: 20181

#XL - P Chemistry

Rutherford’s atomic model suggests the existence
TLS Online TPP Program

#Question id: 20182

#XL - P Chemistry

Which is not true with respect to cathode rays?
TLS Online TPP Program

#Question id: 20183

#XL - P Chemistry

A element M has an atomic mass 19 and atomic number 9. Its ion is represented by