Antibodies

Question 1

IgG location and structure

Answer 1

Structure: Monomer
• Location: Found in all body fluids
-the most abundant antibody

Question 2

Function of IgG

Answer 2

• Function: protects against toxins, and pathogen, & readily activate complement

Question 3

IgM structure and location

Answer 3

Structure: Pentamer
• Location: Mainly in the blood and lymph fluid

Question 4

IgM function

Answer 4

Function: First antibody to respond during an infection; activates complement.

Question 5

IgA structure and location

Answer 5

Structure: Dimer
• Location: Found in mucous membranes, saliva, tears, and breast milk

Question 6

IgA function

Answer 6

Function: Protects body surfaces that are exposed to outside foreign substances; prevents colonization by pathogens.

Question 7

IgE structure and location

Answer 7

Structure: Monomer
• Location: Bound to allergens (variable end) and mast cells and basophils (constant end)

Question 8

IgE function

Answer 8

Function: Protects against parasitic worms; responsible for allergic reaction by triggering bounded cells to release histamine

Question 9

IgD structure and location

Answer 9

Structure: Monomer
• Location: Found in small amounts in the tissues that line the belly or chest

Question 10

IgD function

Answer 10

functions as a receptor on B cells that have not been exposed to antigens.