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Kryger [21]
3 years ago
12

What is alternation of generation and describe how it changes through plant evolution?

Biology
1 answer:
Zina [86]3 years ago
4 0
The alternation of generations is an important concept in the evolution of plants. All land plants have alternation of generations. In mosses and their relatives (Bryophytes), the haploid gametophyte is the dominant generation, and the diploid sporophytes are sporangium-bearing stalks growing from the gametophytes.
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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
What are the 4 types of bonds carbon can form and their structures
Keith_Richards [23]
1- four single bonds, 2- two single and one double bond, 3- one single and one t<span>riple bond, 4- two double bonds.</span>
3 0
3 years ago
Can some one plz help me I’m confused on what to do
luda_lava [24]

Answer:

the questions are asking you like what is the carrying capacity for the rabbits and etc.So you take the information from the graph and answer the questions with the information that it is giving you from the graph. I hope this answers your question.

5 0
3 years ago
What is the term used to identify a molecule responsible for reducing the amount of
Travka [436]
An enzyme. An enzyme is a protein speed up a biochemical reaction. It’s a catalyst.

Hope this helps :)
4 0
2 years ago
Read 2 more answers
Do you think that Earth is overpopulated by
lara [203]

Answer:

i think less is more

Explanation:

let me explain so i think less would be better because then you wound have as many people that are homeless or refugees we all wish refugees could find safe homes but for all of them that just isn't possible.Then again i don't think that you should resort to genocide when trying to maintain a smaller population.Though one could argue the opposite.

(you can come to your own conclusion this is just my opinion)

6 0
3 years ago
Read 2 more answers
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