Practice Questions

TLS Online TPP Program

#Question id: 5841

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

#Unit 8. Inheritance Biology

The BRCA proteins damage DNA by generating double-stranded breaks which can lead to cancer.
Cells become more susceptible to damage if the genes for these proteins are damaged.
BRCA proteins inhibit excision repair mechanisms.
BRCA proteins initiate recombination between non-homologous DNA sequences.

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TLS Online TPP Program

#Question id: 23178

#Unit 13. Methods in Biology

If cyan fluorescent protein (CFP) and yellow fluorescent protein (YFP) are present in close proximity and emission light of wavelength 433nm is applied what will be observed.

TLS Online TPP Program

#Question id: 23177

#Unit 13. Methods in Biology

(FRET) technique uses a pair of fluorescent proteins in which the emission wavelength of the first is

TLS Online TPP Program

#Question id: 23176

#Unit 13. Methods in Biology

When we use a high-intensity light to permanently bleach the fluorochrome in the patch, there will initially be no fluorescence and it will look

TLS Online TPP Program

#Question id: 23175

#Unit 13. Methods in Biology

If we use a high-intensity light on to the fluorochrome there will initially be

TLS Online TPP Program

#Question id: 23172

#Unit 13. Methods in Biology

Green fluorescent protein do contains a tripeptide sequence i.e. ser-tyr-gly but it only fluoresce when

TLS Online TPP Program

#Question id: 23171

#Unit 13. Methods in Biology

Using fluorescently labeled epitope tags in microscopy actually give advantage to visualize