Proline is not often found in a-helices of proteins because it

TLS Online TPP Program

#Question id: 23144

#Unit 13. Methods in Biology

An optical measurement of a protein is taken through microscopy by given that protein a high energy light and it emits a low energy light after absorption. What phenomenon is taking place?

TLS Online TPP Program

#Question id: 23145

#Unit 13. Methods in Biology

A chemical is said to be fluorescent if it absorbs light at one wavelength (excitation) and emits light (fluoresces) at a specific 

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?