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TLS Online TPP Program
#Question id: 23146
#Unit 13. Methods in Biology
A phenomenon of absorption of light at a certain wavelength and then emission at longer wavelength is known as
TLS Online TPP Program
#Question id: 23147
#Unit 13. Methods in Biology
In fluorescence microscopy why the fluorescence occurs at longer wavelength when there shorter wavelength of light is applied?
TLS Online TPP Program
#Question id: 23148
#Unit 13. Methods in Biology
There are two proteins A and B to be visualized under fluorescence microscopy. Both of them are excited with same wavelength of light but A emits longer wavelength. Hence we can conclude that
1. A is denser molecule than B
2. B is denser molecule than A
3. A is lighter molecule than B
4. B is lighter molecule than A
Which of the following option is incorrect?
TLS Online TPP Program
#Question id: 23149
#Unit 13. Methods in Biology
In fluorescence microscopy a usually used fluorochrome that is fura-2 is sensitive to which ions?
TLS Online TPP Program
#Question id: 23150
#Unit 13. Methods in Biology
How fura-2 dye moves inside the cell through plasma membrane?
TLS Online TPP Program
#Question id: 23151
#Unit 13. Methods in Biology
If the concentration of Ca2+ is high inside the cell and fura-2 dye is used to map the concentration which of the following conditions will prevail?
1. Fluorescence will decrease
2. Fluorescence will increase
3. Emission of light at higher wavelength
4. Emission of light at lower wavelength
Which of the following options are correct?