IB Biology Topic C3.2.7 Antigens as Recognition Molecules That Trigger Antibody Production Revision Notes (SL/HL)

IB Biology Topic C3.2.7 Antigens as Recognition Molecules That Trigger Antibody Production Revision Notes (SL/HL) | RevisionDojo

Written by official IB examiners

An antigen is a foreign molecule that triggers a specific antibody

An antigen is a molecule that the immune system recognises and responds to.
Most antigens are proteins or glycoproteins found on the surface of a pathogen.
Each antigen triggers production of one complementary antibody that fits its shape.

Definition

Antigen

Foreign molecules, usually proteins or glycoproteins, that trigger an immune response by being recognized by the immune system.

Antigens let the body tell self from non-self

Your own cells carry self antigens that the immune system leaves alone.
Foreign invaders carry non-self antigens that the immune system treats as a threat.
Recognising non-self antigens is what starts the antibody response.

Note

Antigens are not only on pathogens.
Normal body cells also carry antigens, but these are recognised as self.

Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Unlock the rest of this chapter with a free account

An antigen is a foreign molecule that triggers a specific antibody

An antigen is a molecule that the immune system recognises and responds to.
Most antigens are proteins or glycoproteins found on the surface of a pathogen.
Each antigen triggers production of one complementary antibody that fits its shape.

Definition

Antigen

Foreign molecules, usually proteins or glycoproteins, that trigger an immune response by being recognized by the immune system.

Antigens let the body tell self from non-self

Your own cells carry self antigens that the immune system leaves alone.
Foreign invaders carry non-self antigens that the immune system treats as a threat.
Recognising non-self antigens is what starts the antibody response.

Note

Antigens are not only on pathogens.
Normal body cells also carry antigens, but these are recognised as self.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic C3.2.7: Antigens as Recognition Molecules That Trigger Antibody Production Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

An antigen is a foreign molecule that triggers a specific antibody

Antigens let the body tell self from non-self

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

An antigen is a foreign molecule that triggers a specific antibody

Antigens let the body tell self from non-self

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account