Antibodies

Question 1

Variable region

Answer 1

• has a specific shape for the antigen

Question 2

constant region

Answer 2

• same in all antibodies

- site for the easy binding of phagocytic cells

Question 3

opsonins

Answer 3

• group of antibodies that bind to the antigens on a pathogens then act as a binding site for phagocytic cells
• some opsonins are not very specific and stick to types of molecules found in host cells
• some are specific and are produced as part of the specific immune response
• opsonins bind to the antigens rendering them useless

Question 4

agglutins

Answer 4

• bind pathogens together to form a clump which means by physically cant perform some functions
  eg. entering host cells

Question 5

Antitoxins

Answer 5

-some antibodies bind to molecules that are released by pathogenic cells