The choices are:
<span>A. Matrix protein
B. Hemagglutinin
C. An ion channel
D. Neuraminidase
</span>
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.
Aristotle
According to Aristotle "Happiness is the meaning and purpose of life, the whole aim and end of human existence"
<h3>What is Happiness ?</h3>
Happiness is a life that is being well led through virtue, living well and acting well.
- Happiness depends on ourselves.” More than anybody else, Aristotle enshrines happiness as a central purpose of human life and a goal in itself.
- Aristotle tells us that the most important factor in the effort to achieve happiness is to have a good moral character — what he calls “complete virtue.”
- But being virtuous is not a passive state: one must act in accordance with virtue.
Learn more about Happiness here:
brainly.com/question/7292814
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Answer:
This poisonis an example of an aboitic factor
D. Cannot repopulate the world with endangered organism
<span>Digoxin toxicity is a poisoning that occurs in people due to excessive intake of the medication digoxin or the consumption of plants such as foxglove and lily of the valley that contain digoxin. Manifestations for digoxin toxicity that the nurse should monitor for before administering this medication are vomiting, loss of appetite, confusion, blurred vision, arrhythmias, decreased energy, and irregular heartbeat. The nurse should also closely monitor the electrolyte levels because low levels of potassium and magnesium increase the risk for digoxin toxicity. If digoxin is administered, the heart rate should be counted before every dosage. If the heart rate is lower than 60 beats per minute, the drug should be stopped and the health care professional should be notified.</span>
