Assertion (A): During the induction phase of pollen culture, total protein synthesis is completely halted. 

Reason (R): Existing proteins are suppressed, and new proteins like napin (in Brassica napus) are synthesized.

Select the correct option from:

TLS Online TPP Program

#Question id: 23168

#Life Sciences

What are the advantages of using secondary antibodies in indirect immunofluorescence?

1.  It makes easy to choose a different conjugate no matter the primary antibody

2. Enhance detection by localizing more conjugate at the antigen

3. Conjugation of fluorophore can interfere with the primary antibody’s recognition of the antigen

Which of the following options is correct?

TLS Online TPP Program

#Question id: 23189

#Life Sciences

Which microscopy is good for live cell imaging?

TLS Online TPP Program

#Question id: 23190

#Life Sciences

If we want to view live cells which microscopy can be best used for this?

1. Structured illumination microscopy

2. Phase contrast microscopy

3. Scanning electron microscopy

4. Cryoelectron microscopy

Which of the following option has correct combination?

TLS Online TPP Program

#Question id: 23193

#Life Sciences

When you try to image two fluorescent spots separated by 75 nm the fluorescence overlap so much that they look like one spot. Which microscopy can resolve this?

TLS Online TPP Program

#Question id: 23195

#Life Sciences

Electron microscopy under optimal conditions can provide a resolution of upto 

TLS Online TPP Program

#Question id: 23196

#Life Sciences

What kind of lenses are used to focus a high-velocity electron beam instead of the visible light.