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erica [24]
3 years ago
13

Some viruses can be crystallized and their structures analyzed. One such virus is yellow mottle virus, which infects beans. This

virus has a single-stranded RNA genome containing about 6,300 nucleotides. Its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.
1) If the yellow mottle virus capsid has 20 facets, how many proteins form each facet?
A) 1
B) 5
C) 9
D) 20
E) 180
Biology
1 answer:
Vanyuwa [196]3 years ago
3 0

Answer:

The correct answer is c. That is 9 protein to form each facet

Explanation:

Given that the capsids is 25-30nm in diameter and it contains 180 identical capsomeres, if the virus capsid has 20 facets in 180 capsomeres, then for each protein facet, it will contain 9 protein facets.

Thai is 180 capsomeres divided by total number of facets (20).

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to transmit an output in response to the total afferent input

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3 years ago
Is this a good scientific question? “Is the lifespan of snowshoe hares, which are white in the winter and brown in the summer, a
Harman [31]
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3 0
3 years ago
Explain the interaction that occurs between a t-helper lymphocyte and a b cell when the b cell is being induced to produce peanu
Paraphin [41]

Answer:

           According to Dr. Ray Schiling (member of the American Academy of Anti-aging medicine) about 1.5 million people suffer from peanut allergies. The seeds of peanut (<em>Arachis hypogea</em>) contain an array of allergens that can induce the production of IgE specific antibodies predisposed individuals. Ara1 and Ara2 are most common seed storage protein that cause allergy. Other allergen proteins such as Ara3 to Ara 17 have also been identified that cause allergy.  


Entry of peanut allergen into body

When peanut allergens enter the body of an individuals it leads to development of different symptoms like itchy skin, tingling sensation, nausea, runny nose and anaphylaxis.  

Allergic response

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Mechanism of allergic response (interaction between helper T cell and B cell)

Step 1.  

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Step 2

             HLA class 2 with antigen fragments (peanut allergens) then display on the surface of B cells.

Step 3

            Receptors on the surface of helper T cells recognizes the complex of HLA class 2 and antigen fragments (peanut allergen) and is activated to produce cytokines, which activate the B cells.  

Step 4

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7 0
3 years ago
Coal is a very useful rock that formed over millions of years from the remains of plants. Is coal a mineral?(1 point)
Anna007 [38]

Answer:

No, coal is not a mineral because coal is made of dead plants

Explanation:

Coal is formed when dead plant matter decays. Minerals are chemical compounds.

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3 0
2 years ago
Read 2 more answers
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