2 Based on antigenic differences in H chains, antibodies have been divided into

Question

2 Based on antigenic differences in H chains, antibodies have been divided into the following classes: b) IgM nd IgD c) IgE d) All of the above eNone of the above 3) Quantitatively the largest class of immunoglobulins in human serum is: b) gA c) IgM d) IgD e) IgE 4) Which of the following statements are applicable to lgM immunoglobulins )Tey are the antibodies first to be detected after injection of an antigen b) n the presence of complement, they are highly lethal to gram-negative bacteria c They play an impo9rtant protective role during the early stags of infection d) All of the above None of the above 15) Hypersensitivity is due to The presence of an antigen b. Immunity e. The presence of antibodies d. An altered immune response. e. Allergies 16) Deeneitization to prevent an allergie response can be accomplished by injecting small, repented doses of IgE antibodies b. The antigen (allergen). e. Histamine d. IgG antibodies. .Antihistamine.

Explanation / Answer

12. Antibodies can devided into 5 classes IgA, IgD, IgE, IgG and IgM according to heavy chain alpha, delta, epsilon, gamma and myu respectively. Option d is correct.

13. IgG is most aboundantly found class of antibody. Option a is correct.

14. IgM due to pentameric it can activate complement system and formed firstlyfafter infection. Option d is correct.

15. Hypersensitivity is caused by overexpression ofoimmune system and hence due to altered immune response. Option d is correct.

16. Antihistamines stop degranulation and prevent hypersensitvity. Option e is correct.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.