Are You an Antigen Expert? ANTIGENS 18.1
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Questions and Answers

Which of the following is true about antigens?

  • Antigens are unique to a specific pathogen (correct)
  • Antigens are found on numerous pathogens
  • Antigens play no role in stimulating cellular immunity
  • Antigens are similar to PAMPs
  • What is the role of antigens in stimulating adaptive immune defenses?

  • To stimulate cellular immunity
  • To produce neither antibodies nor cellular immunity
  • To produce both antibodies and cellular immunity (correct)
  • To produce antibodies
  • Which of the following is NOT a molecular class that antigens may belong to?

  • Carbohydrates
  • Vitamins (correct)
  • Nucleic acids
  • Lipids
  • What is the importance of the structural complexity of an antigenic molecule?

    <p>More complex molecules are more effective as antigens</p> Signup and view all the answers

    Which of the following is an example of a bacterial structure that may contain antigens?

    <p>Cell walls</p> Signup and view all the answers

    What are antigens?

    <p>Molecules that trigger adaptive immune defenses</p> Signup and view all the answers

    What distinguishes antigens from PAMPs?

    <p>Antigens are unique to a specific pathogen</p> Signup and view all the answers

    What is the difference between antigens and immunogens?

    <p>There is no difference</p> Signup and view all the answers

    What are some examples of bacterial structures that may contain antigens?

    <p>Capsules, cell walls, fimbriae, flagella, or pili</p> Signup and view all the answers

    What are some examples of viral structures that may contain antigens?

    <p>Capsids, envelopes, and spike structures used for attachment to cells</p> Signup and view all the answers

    Which molecular class is the most effective and potent antigen?

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

    Which molecular class is the least antigenic?

    <p>Lipids and nucleic acids</p> Signup and view all the answers

    What is an important factor in the antigenic potential of a molecule?

    <p>The structural complexity</p> Signup and view all the answers

    What is the role of antigens in stimulating adaptive immunity?

    <p>To trigger the production of antibodies and activate immune cells</p> Signup and view all the answers

    What is the origin of the word antigen?

    <p>A combination of the words antibody and generator</p> Signup and view all the answers

    Which of the following is not a molecular class that antigens may belong to?

    <p>Fatty acids</p> Signup and view all the answers

    What were antigens initially used to describe?

    <p>Molecules that stimulate the production of antibodies</p> Signup and view all the answers

    What do antigens trigger in the immune system?

    <p>Adaptive immune defenses</p> Signup and view all the answers

    What is the difference between antigens and PAMPs?

    <p>Antigens are unique to a specific pathogen, while PAMPs are found on numerous pathogens.</p> Signup and view all the answers

    What is the term used to refer to antigens that stimulate both humoral and cellular immunity?

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

    What are some examples of bacterial structures that may contain antigens?

    <p>Cell walls, fimbriae, and pili</p> Signup and view all the answers

    What are some examples of viral structures that may contain antigens?

    <p>Capsids, envelopes, and spike structures</p> Signup and view all the answers

    Which molecular class is the most effective and potent antigen?

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

    What is an important factor in the antigenic potential of a molecule?

    <p>The complexity of the molecule</p> Signup and view all the answers

    What is the role of antigens in stimulating both humoral and cellular immunity?

    <p>To activate T cells and B cells</p> Signup and view all the answers

    What is the origin of the word antigen?

    <p>It comes from a combination of the words antibody and generator</p> Signup and view all the answers

    What is the difference between antigens and immunogens?

    <p>Antigens stimulate both humoral and cellular immunity, while immunogens only stimulate humoral immunity</p> Signup and view all the answers

    What is the term used to describe molecules that stimulate the production of antibodies?

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

    What is the definition of an antigen?

    <p>A molecule that triggers adaptive immune defenses</p> Signup and view all the answers

    Which of the following is an example of a viral structure that may contain antigens?

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

    Which molecular class is the least antigenic?

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

    What is the difference between antigens and PAMPs?

    <p>Antigens are unique to a specific pathogen, while PAMPs are found on numerous pathogens</p> Signup and view all the answers

    What is the most effective and potent antigen?

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

    What is the role of antigens in stimulating humoral immunity?

    <p>Antigens trigger the production of antibodies by B cells</p> Signup and view all the answers

    What are some examples of bacterial structures that may contain antigens?

    <p>Cell walls and pili</p> Signup and view all the answers

    What is the least complex molecular class that can stimulate humoral immune defenses?

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

    What is the least antigenic molecule?

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

    What is an important factor in the antigenic potential of a molecule?

    <p>Its structural complexity</p> Signup and view all the answers

    What is the origin of the word antigen?

    <p>It comes from the words antibody and generator</p> Signup and view all the answers

    What is the difference between antigens and immunogens?

    <p>Antigens are pathogen-specific molecular structures that trigger adaptive immune defenses, while immunogens are substances that can induce an immune response</p> Signup and view all the answers

    What is the difference between humoral and cellular immunity?

    <p>Humoral immunity involves the production of antibodies by B cells, while cellular immunity involves the activation of T cells</p> Signup and view all the answers

    What is the function of antigens in adaptive immunity?

    <p>They trigger both humoral and cellular immunity</p> Signup and view all the answers

    Which of the following is true about the molecular complexity of antigens?

    <p>Proteins are the most potent antigens</p> Signup and view all the answers

    What is the difference between antigens and PAMPs?

    <p>Antigens are pathogen-specific, while PAMPs are found on numerous pathogens</p> Signup and view all the answers

    What are some examples of bacterial structures that may contain antigens?

    <p>Capsules, cell walls, fimbriae, flagella, and pili</p> Signup and view all the answers

    Which of the following is true about the antigenic potential of a molecule?

    <p>The structural complexity of an antigenic molecule is an important factor in its antigenic potential</p> Signup and view all the answers

    What is the origin of the word antigen?

    <p>A combination of the words antibody and antigenic</p> Signup and view all the answers

    Which of the following is true about viral antigens?

    <p>They may be associated with capsids, envelopes, and spike structures used for attachment to cells</p> Signup and view all the answers

    What is the role of antigens in stimulating the production of antibodies?

    <p>Antigens were initially used to describe molecules that stimulate the production of antibodies</p> Signup and view all the answers

    Which of the following is the least antigenic molecular class?

    <p>Nucleic acids</p> Signup and view all the answers

    What are antigens sometimes referred to as?

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

    Which of the following is true about the stimulation of humoral immune defenses?

    <p>Carbohydrates are less complex and can only stimulate humoral immune defenses</p> Signup and view all the answers

    What is the difference between antigens and immunogens?

    <p>Antigens are pathogen-specific, while immunogens stimulate the production of antibodies</p> Signup and view all the answers

    What is the molecular class that is the most effective and potent antigen due to its complex three-dimensional structure capable of stimulating both humoral and cellular immunity?

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

    What is the term used to describe molecules that stimulate antibody production and play a crucial role in the adaptive immune response, recognizing and targeting specific pathogens for elimination?

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

    Which of the following molecular classes are the least antigenic and may only become antigenic when combined with proteins or carbohydrates?

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

    What are pathogen-specific molecular structures that trigger adaptive immune defenses and are unique to a specific pathogen?

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

    Which of the following structures contain antigens in pathogens?

    <p>Bacterial capsules</p> Signup and view all the answers

    Which of the following is NOT a molecular class that antigens may belong to?

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

    What is the term used to describe the type of immunity that is stimulated by antigens and involves the production of antibodies by B cells?

    <p>Humoral immunity</p> Signup and view all the answers

    Which of the following molecular classes can only stimulate humoral immune defenses and not cellular immunity?

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

    What is the role of antigens in adaptive immunity?

    <p>To recognize and target specific pathogens for elimination</p> Signup and view all the answers

    What is the antigenic potential of a molecule determined by?

    <p>Its shape</p> Signup and view all the answers

    What are unique molecular structures found on multiple pathogens and differ from antigens?

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

    Which of the following molecular classes vary in their ability to stimulate adaptive immune defenses and the type of response they induce?

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

    What is the main characteristic of antigens that distinguishes them from PAMPs?

    <p>Antigens are unique to a specific pathogen</p> Signup and view all the answers

    Which of the following is NOT an example of a bacterial structure that may contain antigens?

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

    What are some examples of viral structures that may contain antigens?

    <p>Capsids, envelopes, and spikes</p> Signup and view all the answers

    Which molecular class is capable of stimulating both humoral and cellular immunity?

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

    What is the antigenic potential of lipids and nucleic acids?

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

    Which type of immune response can be stimulated by carbohydrates?

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

    What is the role of antigens in adaptive immune defenses?

    <p>To trigger adaptive immune defenses</p> Signup and view all the answers

    What is the relationship between the complexity of an antigenic molecule and its antigenic potential?

    <p>The more complex the molecule, the higher its antigenic potential</p> Signup and view all the answers

    Which of the following is an example of an antigenic molecule that may belong to multiple molecular classes?

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

    Which immune response is not limited to the production of antibodies?

    <p>Cellular immunity</p> Signup and view all the answers

    What are extracellular toxins and enzymes associated with bacterial cells?

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

    Which of the following is an example of a bacterial structure that is not typically associated with antigens?

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

    What is the difference between antigens and PAMPs?

    <p>Antigens are unique to a specific pathogen, while PAMPs are common to groups of pathogens</p> Signup and view all the answers

    What is an example of a viral structure that may contain antigens?

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

    Which type of immunity is stimulated by antigens?

    <p>Humoral and Cellular immunity</p> Signup and view all the answers

    Which of the following is true about carbohydrates as antigens?

    <p>They can only stimulate humoral immune defenses</p> Signup and view all the answers

    What is the role of antigens in adaptive immunity?

    <p>To trigger adaptive immune defenses</p> Signup and view all the answers

    Which of the following is an example of a bacterial antigen?

    <p>Bacterial capsules</p> Signup and view all the answers

    What is the least antigenic molecular class?

    <p>Lipids and nucleic acids</p> Signup and view all the answers

    What is the most effective and potent antigen?

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

    What is the importance of the structural complexity of an antigenic molecule?

    <p>It is an important factor in its antigenic potential</p> Signup and view all the answers

    Which of the following is true about antigens belonging to different molecular classes?

    <p>They vary in their ability to stimulate adaptive immune defenses and in the type of response they stimulate</p> Signup and view all the answers

    Which of the following is true about antigens from bacterial cells?

    <p>They may also be associated with extracellular toxins and enzymes they secrete</p> Signup and view all the answers

    Which of the following is NOT a molecular class that antigens may belong to?

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

    What is the primary role of antigens in adaptive immune defenses?

    <p>To stimulate both humoral and cellular immunity</p> Signup and view all the answers

    Which of the following is NOT an example of a bacterial structure that may contain antigens?

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

    What type of immunity can be stimulated by antigens from bacterial cells associated with extracellular toxins and enzymes they secrete?

    <p>Both humoral and cellular immunity</p> Signup and view all the answers

    Which of the following is the most antigenic molecular class?

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

    What is the difference between antigens and PAMPs?

    <p>Antigens are unique to a specific pathogen, while PAMPs are not</p> Signup and view all the answers

    Which of the following is an example of a viral structure that may contain antigens?

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

    Which of the following is NOT a molecular class that antigens may belong to?

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

    Which type of immunity is stimulated by carbohydrates?

    <p>Humoral immunity only</p> Signup and view all the answers

    What is the antigenic potential of lipids and nucleic acids?

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

    Which of the following is an important factor in the antigenic potential of a molecule?

    <p>Its structural complexity</p> Signup and view all the answers

    What is the primary type of immunity stimulated by proteins?

    <p>Both humoral and cellular immunity</p> Signup and view all the answers

    Which of the following is true about antigens and their role in adaptive immunity?

    <p>Antigens stimulate both humoral and cellular immunity</p> Signup and view all the answers

    What is the main difference between antigens and PAMPs?

    <p>Antigens are unique to a specific pathogen, while PAMPs are not pathogen-specific.</p> Signup and view all the answers

    Which of the following structures may contain antigens in bacterial cells?

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

    Which of the following is true about the antigenic potential of proteins?

    <p>Proteins are the most effective and potent antigens.</p> Signup and view all the answers

    Which of the following is true about the antigenic potential of carbohydrates?

    <p>Carbohydrates are less complex in structure and can only stimulate humoral immune defenses.</p> Signup and view all the answers

    Which of the following is true about the antigenic potential of lipids and nucleic acids?

    <p>Lipids and nucleic acids are the least antigenic molecules.</p> Signup and view all the answers

    Which of the following is true about the relationship between antigenic potential and structural complexity?

    <p>The structural complexity of an antigenic molecule is an important factor in its antigenic potential.</p> Signup and view all the answers

    Which of the following is true about the type of immune response stimulated by antigens of different classes?

    <p>Antigens of different classes vary in the type of response they stimulate (humoral or cellular).</p> Signup and view all the answers

    Which of the following is true about the antigens of viruses?

    <p>Antigens of viruses are associated with their capsids, envelopes, and spike structures used for cell attachment.</p> Signup and view all the answers

    Which of the following is true about the antigens of bacterial cells?

    <p>Antigens from bacterial cells may also be associated with extracellular toxins and enzymes they secrete.</p> Signup and view all the answers

    Which of the following is true about the relationship between antigens and adaptive immune defenses?

    <p>Antigens trigger adaptive immune defenses.</p> Signup and view all the answers

    Which of the following is true about the uniqueness of antigens?

    <p>Antigens are unique to a specific pathogen.</p> Signup and view all the answers

    Which of the following is true about the immune response stimulated by antigens?

    <p>Antigens stimulate both humoral and cellular immunity.</p> Signup and view all the answers

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