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Ivanshal [37]
3 years ago
14

Help this is missing

Biology
2 answers:
stellarik [79]3 years ago
7 0
The scientist one is biogeography
9966 [12]3 years ago
4 0

Answer:

fwrgfrgregqaegeagaergarg

Explanation:r

ergqrgeg

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Viral hemagglutination assays only work with certain types of viruses because
nignag [31]

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:

  1. 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. 
  2. 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. 
  3. 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>

5 0
3 years ago
The primary growth of a plant adds __________, and secondary growth adds __________. View Available Hint(s) The primary growth o
kari74 [83]

Answer:

1. Height

2. Girth

Explanation:

The woody plants grow in two manners: the primary growth and secondary growth.

The primary growth is considered the type of growth which increases the height of the plant which involves the apical meristem present at the tip of the shoot.

When the height increases up to its maximum length, then secondary growth begins which add tissues to the side that is it increases the girth by adding bark, secondary xylem and phloem.

Thus, Height and Girth is correct.

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THE ANSWER IS A. SERI/NREL
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A resource is being used by a population.
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i believe the answer to be B

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Whats the correct answer to the question ?
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What question are you talking about?
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