11.2 Actions of Antibodies

11.2 Actions of Antibodies - Set 1

Report 1 / 5

Complete the following sentence with the correct answer.

\(\underline{\hspace{2cm}}\)binds to the toxin antigen of a pathogen to \(\underline{\hspace{2cm}}\) it and prevent the antigen from binding to the cell receptors and release the toxin into a cell.

(A)		Agglutinin, agglutinate

(B)		Opsonin, opsonise

(C)		Lysine, disintegrate

(D)		Antitoxin, neutralise

Difficulty Level: Medium

11.2 Actions of Antibodies - Set 1

Report 2 / 5

Which of the following statement is correct about opsonisation?

I.		Macrophages produce antibody

II.		Use antibody antitoxin to bind with the antigen of a pathogen

III.		Binding of antigen-antibody form a structure (tags) that makes phagocytes easy to recognize

IV.		The antigen-antibody complex engulfed by phagocytes and perform phagocytosis

I & II
I & IV
I & III
III & IV

Difficulty Level: Medium

11.2 Actions of Antibodies - Set 1

Report 3 / 5

Which of the following is correct?

	Types of antibody	Mode of action
(A)	Antitoxin	Clumps the pathogens
(B)	Opsonin	Act as markers
(C)	Lysins	Neutralise the toxins
(D)	Agglutinin	Cell ruptures

Difficulty Level: Medium

11.2 Actions of Antibodies - Set 1

Report 4 / 5

The following statements refer to the mode of action of an antibody.

The antibody binds to the antigen and form an antibody-antigen complex
The antibody-antigen complex form an insoluble compound

What type of antibody involved in the above action?

Lysin
Agglutinin
Opsonin
Precipitin

Difficulty Level: Hard

11.2 Actions of Antibodies - Set 1

Report 5 / 5

The statement shows the mode of action of antibodies to a foreign antigen.

Binding of antibody to antigen causing the antigen-antibody complex to agglutinate

This mode of action above belongs to \(\underline{\hspace{2cm}} \) process.

Agglutination
Opsonization
Neutralization
Precipitation

Difficulty Level: Medium