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</p> Signup and view all the answers

    What type of organism causes diphtheria?

    <p>Bacteria</p> Signup and view all the answers

    Where does the membrane form in diphtheria?

    <p>Throat</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</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</p> Signup and view all the answers

    What is fibrin?

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

    How are viral strains identified?

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

    What is the role of Hemagglutinin (H) spikes?

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

    Neuraminidase (N) spikes are responsible for which function?

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

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

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

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

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

    What can block the passage of air in diphtheriae?

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

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

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

    What is the primary characteristic of the membrane in diphtheriae?

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

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

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

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

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

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

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

    How are viral strains identified?

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

    What is the role of neuraminidase (N) spikes?

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

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