Agglutination in Microbiology: Definition & Examples


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What is a foreign substance that activates the immune system?

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1. What is supplied by the immune system to form complexes in the agglutination process?

2. What five-legged antibody is particularly efficient in causing agglutination?

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About This Quiz & Worksheet

Agglutination helps to inactivate destructive bacteria, viruses, and other substances to protect the human body from harm, and this worksheet/quiz combo is designed to assess your knowledge of agglutination. The questions will quiz the student on specific terms and concepts important in the agglutination process.

Quiz & Worksheet Goals

In this quiz, the student will be assessed on their understanding of:

  • Foreign antibodies that activate the immune system
  • Serum dilutions used to determine the smallest serum amount needed to cause agglutination
  • Five-legged antibodies efficient in causing agglutination
  • An agent supplied by the immune system to trigger the agglutination process

Skills Practiced

This assessment and worksheet both test the student's use of these important skills:

  • Making connections - use understanding of the concept of agglutination to see how the agglutination process cleanses the body of harmful substances
  • Critical thinking - apply relevant concepts to examine information about the antigen-antibody complex in a different light
  • Defining key concepts - confirm that you can accurately define main terms, such as antibody and antigen
  • Distinguishing differences - compare and contrast topics from the lesson, such as immunoglobulin G (IgG) versus immunoglobulin M (IgM)

Additional Learning

To learn more about the agglutination process, please review the accompanying lesson entitled Agglutination in Microbiology: Definition & Examples. The lesson will cover the following objectives:

  • Define agglutination and describe it in non-scientific terminology
  • Differentiate between direct agglutination tests and indirect (passive) agglutination tests
  • Identify illnesses that can be diagnosed by performing agglutination testing
  • Know the various foreign substances, proteins, and cells involved with agglutination reactions