Answer:
a. the virus must be able to cross-link red blood cells directly.
Explanation:
Viral hemagglutination assay is a method which is used for the quantification of the relative concentration of the viruses.
The principle on which the hemagglutination assay works is as follows:
- There are sialic acid receptors present on the surface of the red blood cells which will bind to the haemagglutinin glycoprotein present on the surface of the viral particle.
- Due to the binding of the sialic acid receptors with haemagglutinin particle there will be cross-linking of the red blood cells by the viral particles and a lattice formation will take place.
- The lattice will remain suspended in the solution however if the concentration of the virus particles will be less, the lattice will settle down in the well.
Thus, this method allows knowing the relative concentration of the virus.
<em>Due to its basic principle of cross-linking this method works well for only a few viruses such as influenza virus. </em>
And model does it show something exactly as it is in the world
I think Acetic acid will be produced if wine is aerated and inoculated with bacteria of the genera acetobacter and gluconobacter. Acetobacter is a genus of acetic acid bacteria. This bacteria is used for the mass production of Acetic Acid, the main component in vinegar. Gluconobacter is also a genus of the acetic acid bacteria family.
The particles in a hot pan have greater kinetic energy than the particles in a cool oven mitt.
This is because as the temperature of an object increases, the particles gain more energy and therefore move faster, increasing kinetic energy.
I hope this helps, feel free to ask any questions you may have
Number of neutrons in the nucleus
