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Following are the statements about the r...

Following are the statements about the role of antibodies during immunity
A)They bring precipitation of insoluble antigens and agglutination of soluble antigens B) They bring precipitation of soluble antigens and agglutination of insoluble antigens C) They also activate the phagocytes and inactivate the complement system D) They help in opsonising and immobolising the bacteria
Find the correct statements

A

A,B,C

B

B & C

C

A,B,D

D

B &D

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the role of antibodies during immunity, we will analyze each statement provided: 1. **Statement A**: "They bring precipitation of insoluble antigens and agglutination of soluble antigens." - **Analysis**: This statement is incorrect. Antibodies cause precipitation with soluble antigens, not insoluble ones. Agglutination occurs with insoluble antigens. Therefore, this statement is false. 2. **Statement B**: "They bring precipitation of soluble antigens and agglutination of insoluble antigens." - **Analysis**: This statement is correct. Antibodies indeed precipitate soluble antigens and agglutinate insoluble antigens. Thus, this statement is true. 3. **Statement C**: "They also activate the phagocytes and inactivate the complement system." - **Analysis**: This statement is incorrect. Antibodies activate phagocytes and also activate the complement system, rather than inactivating it. Therefore, this statement is false. 4. **Statement D**: "They help in opsonizing and immobilizing the bacteria." - **Analysis**: This statement is correct. Antibodies play a role in opsonization (marking pathogens for destruction) and immobilization of bacteria. Thus, this statement is true. **Conclusion**: The correct statements are B and D.
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AAKASH SERIES-HUMAN HEALTH DISEASE-EXERCISE - II (ANTIBODY)
  1. If you suspect major deficiency of antibodies in a person, to which of...

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  2. Identify the correctly labelled parts of antibody

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  3. Observe the picture given below and identify the answer

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  4. Study of interaction of antigen and antibody in blood is termed

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  5. Antibodies are

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  6. Which type of antibody molecules is involved in ABO - incompatibility ...

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  7. Gamma immunoglobulins are synthesized in

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  8. Opsonisation is carried out by

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  9. Which of the following is the major immunoglobulin in human serum, acc...

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  10. Which immunoglobulin is the least prevalent?

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  11. The antibody that is capable of crossing the placental barrier and is ...

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  12. A portion of the antigen, the antigenic determinant, which can bind to...

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  13. Membrane bound antibodies are present on surface of

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  14. Antibody formed of five immunoglobin units/pentamer is

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  15. Immunoglobulin present in sebum is

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  16. Lysis of foreign cell is mediated through

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  17. Which immunoglobin is the largest in size

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  18. Following are the statements about the role of antibodies during immun...

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  19. Digestion of antigens by phagocytes due to stimulation by antibodies i...

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  20. How many variable segments are present in the basic structure of an an...

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