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slamgirl [31]
3 years ago
5

Please help me out.​

Biology
1 answer:
aniked [119]3 years ago
6 0

Answer:_____________

Explanation:_____________

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Which part of the influenza virion facilitates interaction between the virus and the to-be-infected eukaryotic host cell?
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The choices are:
<span>A.  Matrix protein
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The right answer is B. Hemaglutinin

Explanation:
Haemagglutinins are triangular rods. They allow the attachment of Influenzaviruses on the target cells of the respiratory tree. In the presence of red blood cells, a haemagglutination (liquid medium) is obtained.
<u>About the other components of Influenza virus:</u>Neuraminidase is a mushroom-shaped spike composed of a tetramer consisting of 4 subunits of a single glycoprotein. At 37 ° C, the neuraminidase destroys the bonds (virus - cells) and thus allows the release of neoformed virions in the external environment: it is elution.
The membrane protein M and the protein subunits of the nucleocapsid are antigenic and are the basis of the classification of Influenzavirus types A, B and C. They induce the synthesis of non-protective antibodies fixing the complement.
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4 Which muscles are actively involved in normal breathing?
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The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
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2 years ago
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Isolation after an Event. An earthquake causes two populations to become separate from each other. Over time, each species experiences genetic makeup specific only to their own smaller, less diverse populations. ... Over time, the group becomes an entirely different species.

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C. cell membrane the cell membrane lets the good stuff in and keeps the bad stuff out.
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