Qs 11-20

Question 1

The zone of equivalence is a place where?

Answer 1

The concentration of antibodies is in balance with the concentration of antigens.

(Concentration of antibodies and antigen is in blance)

Question 2

In blocking ELISA for testing antibodies:

Answer 2

Enzyme labelled antibody is addes after first incubation with serum.

Question 3

Blood serum is used to determine immunoglobulin concentration using a _____________ test.

Answer 3

Zinc phosphate test.

Question 4

Whole blood is used to determine immunoglobulin concentration using a _______________ test.

Answer 4

Glutaraldehyde test.

Question 5

Which immunoelectrophoresis is for determination of gammapathies in blood serum?

Answer 5

Classical immunoelectrophoresis.

Question 6

In the sandwich ELISA they have:

Answer 6

Labelled antibodies have the same specificity as solid phase bound antibodies.

Question 7

Serum inactivation is used to?

Answer 7

Inactivate the compliment system.

Question 8

SDS is udes for the preparation of samples for page because of:

Answer 8

Gives the same negative charge to all proteins.

Question 9

The result of western blot is evaluated as a change in colour:

Answer 9

on the NC membrane

Question 10

After serum, electrophoresis immunoglobulins are present in the fraction of?

Answer 10

gamma globulins