microbiolgy ques

[doppler]

The amount of protein precipitated in a series of tubes containing a constant amount of antibody and varying amount of antigen are presented below.In which tube is antigen-antibody equivalence obtained
Tube Antigen precipitated(mg) Protien
A 0.02 1.1
B 0.08 2.1
C 0.32 3.1
D 1.0 3.7
E 2.0 2.9

[Anonymous]

Can you speak English?

[stepanida]

ans. D

[Lorena]

:?: :?: can you explain why?

thanks

[stepanida]

The amount of protein precipitated in a series of tubes containing a constant amount of antibody and varying amount of antigen are presented below.In which tube is antigen-antibody equivalence obtained
Tube Antigen precipitated(mg) Protien
A 0.02 1.1
B 0.08 2.1
C 0.32 3.1
D 1.0 3.7
E 2.0 2.9


ans D .In tube D the maximum protein precipitate is observed. According to the rules governing precipitin reactions, maximum precipitation occurs at approximately antigen-antibody equivalence. In tubes a through c, antibody excess occurs; in tube e, antigen excess occurs.

Microbiology pretest R Tilton 2002. page 241

[Lorena]

Thank you stepanida for the answer and explanation. Thanks doppler for the question.

:headspin:

best of luck in your exams!