An antigen is:Group of answer choicesa virulence factor of bacteriaa protein molecule synthesised by plasma cellsa foreign substance that activates the immune systemany component of a foreign cellNext

What is an antigen?Multiple choice question.any molecule that triggers an immune responsea molecule produced during an immune response

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.

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

The adaptive immune system responds to foreign molecules, typically protein components of bacteria, viruses, molds, or parasites, which are collectively known as .

Item9 Time Remaining 1 hour 27 minutes 17 seconds01:27:17eBookReferencesItem 9 Time Remaining 1 hour 27 minutes 17 seconds01:27:17What is the definition of an antigen?Multiple Choiceanything the immune system recognizes as foreign to the bodya protein produced by plasma cells that attacks pathogensa type of white blood cella part of the membrane attack complex of the complement systema form of immune deficiency