Influenza Virus Structure and Classification

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Questions and Answers

Where is the substance mentioned in the text ultimately carried to?

  • The large intestine
  • The lungs
  • The stomach
  • The small intestine (correct)

What is the substance that is 'coughed up in sputum, swallowed, finally carried to the small intestine'?

  • Bile
  • Stomach acid
  • Mucus (correct)
  • Food

What is the purpose of the substance being carried to the small intestine?

  • Absorption of nutrients
  • Digestion of food (correct)
  • Respiration
  • Elimination of waste

What process is described in the given text?

<p>The movement of a substance through the digestive system (D)</p> Signup and view all the answers

What type of organism causes diphtheria?

<p>Bacteria (D)</p> Signup and view all the answers

Where does the membrane form in diphtheria?

<p>Throat (B)</p> Signup and view all the answers

What is the primary concern with the membrane formation in diphtheria?

<p>It can block the passage of air (A)</p> Signup and view all the answers

What components are present in the membrane formed in diphtheria?

<p>Fibrin and dead human and bacterial cells (D)</p> Signup and view all the answers

What is fibrin?

<p>A type of protein found in blood (C)</p> Signup and view all the answers

What are the two types of spikes found in the outer lipid bilayer of the virus?

<p>Hemagglutinin (H) and Neuraminidase (N) (B)</p> Signup and view all the answers

How are viral strains identified?

<p>By antigenic differences in H and N spikes (B)</p> Signup and view all the answers

What is the role of Hemagglutinin (H) spikes?

<p>Attachment to host cells (B)</p> Signup and view all the answers

Neuraminidase (N) spikes are responsible for which function?

<p>Releasing virus from cell (A)</p> Signup and view all the answers

How are viral strains divided based on antigenic differences?

<p>H and N spikes, and protein coats (A, B, and C) (A)</p> Signup and view all the answers

What substance is being carried to the small intestine according to the text?

<p>An unspecified substance (B)</p> Signup and view all the answers

What is the primary role of the substance being carried to the small intestine?

<p>The text does not provide enough information to determine the role (C)</p> Signup and view all the answers

What type of organism is responsible for the process described in the text?

<p>The text does not specify the type of organism (A)</p> Signup and view all the answers

Where is the substance mentioned in the text ultimately carried to?

<p>The small intestine (A)</p> Signup and view all the answers

What is the main focus of the given text?

<p>The text does not provide enough information to determine the main focus (A)</p> Signup and view all the answers

What can block the passage of air in diphtheriae?

<p>Membrane containing fibrin and dead cells (A)</p> Signup and view all the answers

Which components are found in the membrane that forms in diphtheriae?

<p>Fibrin and dead human cells (A)</p> Signup and view all the answers

What is the primary characteristic of the membrane in diphtheriae?

<p>Contains fibrin and blocks air passage (C)</p> Signup and view all the answers

Which condition results from the blockage caused by the membrane in diphtheriae?

<p>Impaired breathing (D)</p> Signup and view all the answers

What potential consequence can arise from a membrane forming in diphtheriae?

<p>Obstruction of the air passage (A)</p> Signup and view all the answers

What are the two types of spikes that project from the outer lipid bilayer of the virus?

<p>Hemagglutinin (H) and neuraminidase (N) (C)</p> Signup and view all the answers

What is the purpose of the Hemagglutinin (H) spikes?

<p>To facilitate viral entry into host cells (A)</p> Signup and view all the answers

How are viral strains identified?

<p>By antigenic differences in their H and N spikes (A)</p> Signup and view all the answers

What is the role of neuraminidase (N) spikes?

<p>To release the virus from the host cell (A)</p> Signup and view all the answers

How are viral strains divided based on antigenic differences?

<p>By differences in their protein coat (A, B, and C) (C)</p> Signup and view all the answers

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