When antibodies bind to the antigens on a pathogen or toxin....Choose all correct answers.Question 17Select one or more:a.a toxin coated with antibodies cannot damage the cell.b.Antigens that are coated with antibodies are easier for phagocytes to attach toc.The pathogen can no longer attach to the target cell.d.Antibodies can link antigens together forming a cluster that phagocytes can ingest.
Question
When antibodies bind to the antigens on a pathogen or toxin....Choose all correct answers.Question 17Select one or more:a.a toxin coated with antibodies cannot damage the cell.b.Antigens that are coated with antibodies are easier for phagocytes to attach toc.The pathogen can no longer attach to the target cell.d.Antibodies can link antigens together forming a cluster that phagocytes can ingest.
Solution
The correct answers are:
a. A toxin coated with antibodies cannot damage the cell. This is because the antibodies neutralize the toxin, preventing it from causing harm to the cell.
b. Antigens that are coated with antibodies are easier for phagocytes to attach to. This is because the antibodies act as a sort of "flag" for the phagocytes, signaling them to the presence of the pathogen.
d. Antibodies can link antigens together forming a cluster that phagocytes can ingest. This process is known as agglutination, and it makes it easier for the phagocytes to engulf and destroy the pathogens.
The statement c. The pathogen can no longer attach to the target cell is not always correct. While some antibodies can prevent pathogens from attaching to cells, not all do. Some antibodies work by neutralizing the pathogen, others by agglutination or opsonization (making the pathogen more attractive to phagocytes), and others still by activating the complement system.
Similar Questions
Antibodies:Question 19Select one:a.bind to antigens on the surface of pathogensb.are part of the first line of defence. c.are features on the outside of cells or pathogensd.are infections or diseases
What are antigens?Proteins found on the surface of cellsMicrobes that cause diseasesProteins that bind to pathogensProteins that kill toxins released by pathogens3Which of the following statements about antibodies is not true?They can cause pathogens to clump togetherA single antibody can destroy a wide range of pathogensThey attach to antigensThey are produced by white blood cells4
What is the function of an antibody?to inject toxins into living pathogensto mark pathogenic cells for destructionto bind to Toll-like receptorsto secrete cytokines that attract macrophages to infection sites
Antigens:Question 22Select one or more:a. are used by the immune system to identify what is part of the body and what is a pathogen.b.are often large proteins (some carbohydrates and lipids can also be antigenic).c.stimulate the activity of T and B lymphocytes.d.are found on the surface of cells (both pathogens and body cells), and on pollen, toxins, and food.
An antibody is any substance capable of triggering an immune response
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