Introduction to Immunology – DAILY TAMIL NEWS

Introduction to Immunology
1. Immunological unresponsiveness denotes
a. Immunodeficiency
b. Inflammation
c. Tolerance
d. Autoimmunity
[expand title=”View Answer and explanation” ] Answer: c. Tolerance ,
Click here for Explanation:- [/expand]

2. The two major phases of Immune system functioning are
a. Recognition and response
b. Recognition and memory
c. Memory and response
d. Response and effector functions
[expand title=”View Answer and explanation” ] Answer: a. Recognition and response ,
Explanation:- The immune system is a complex network of organs, cells, and molecules that work together to protect the body from harmful pathogens and foreign substances. It can be divided into two major phases: recognition and response. Click Read full explanation of this Mcq [/expand]

3. The appropriate response of the immune system is known as the
a. Effector responses
b. Recognition of non-self
c. Recognition of altered self
d. Diversity
[expand title=”View Answer and explanation” ] Answer: a. Effector responses,
Explanation:- The immune system is a complex network of defense mechanisms that protects our bodies from harmful pathogens and diseases. It has the remarkable ability to identify and eliminate foreign invaders while maintaining tolerance to self-components. One crucial aspect of the immune system is its ability to mount an appropriate response when encountering pathogens. This response, known as effector responses, plays a vital role in neutralizing threats and maintaining our health. Read Full article Click Here [/expand]

4. Immune system confers long lasting protection by
a. Specificity
b. Diversity
c. Memory
d. Recognition
[expand title=”View Answer and explanation” ] Answer: c. Memory ,
Explanation:-

The immune system is a complex network of cells, tissues, and organs that work together to defend the body against harmful pathogens such as viruses and bacteria. One remarkable feature of the immune system is its ability to remember past encounters with specific pathogens and mount a more rapid and effective response upon re-exposure. This immune memory plays a crucial role in conferring long-lasting protection against infectious diseases. In this article, we will explore how the immune system’s memory function works and how it contributes to providing durable immunity.

Read Full Explanation – Click here

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5. The term ‘Immunitas’ means
a. Adaptation
b. Exempt
c. Confer
d. Defence
[expand title=”View Answer and explanation” ] Answer: b. Exempt,
Explanation:-

Immunity, derived from the Latin term “immunitas,” holds various meanings and interpretations across different domains. Its historical roots can be traced back to the 14th century when it was introduced as a legal term, signifying exemption from certain obligations or liabilities [1]. Over time, the term has expanded in scope and gained significance in the medical field as well. This article explores the evolution of the term “immunitas” and its implications in both legal and medical contexts, shedding light on the concept of exemption and resistance.

Read full explanation click Here

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6. The substance that binds to an antibody is known as
a. Antigen
b. Isotype
c. CDRs
d. Peptides
[expand title=”View Answer and explanation” ] Answer: a. Antigen,
Explanation:-

The human immune system is a remarkable defense mechanism that protects our bodies from harmful substances and foreign invaders. One of the key players in this intricate system is the antibody, also known as an immunoglobulin. Antibodies are specialized proteins produced by the immune system in response to the presence of foreign substances, known as antigens [[1](https://www.britannica.com/science/antibody)]. In this article, we will explore the concept of antigens and their crucial role in the immune response. So, what exactly is an antigen?

Read full explanation

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7. The immune mechanisms consist of
a. Innate and Adaptive responses
b. Only Innate responses
c. Only Adaptive responses
d. Non-responsive
[expand title=”View Answer and explanation” ] Answer: a. Innate and Adaptive responses ,
Explanation:- The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against harmful pathogens and foreign substances [1]. It comprises two primary components: the innate immune system and the adaptive immune system. These two systems collaborate closely, each with its unique functions and mechanisms [1][2]. Read full explanation here [/expand]

8. The first lines of defenses are
a. Innate mechanisms
b. Adaptive mechanisms
c. Humoral mechanisms
d. Cell mediated mechanisms
[expand title=”View Answer and explanation” ] Answer: a. Innate mechanisms ,
Explanation:- [/expand]

9. The second lines of defenses are
a. Innate mechanisms
b. Adaptive mechanisms
c. Humoral mechanisms
d. Cell mediated mechanisms
[expand title=”View Answer and explanation” ] Answer: b. Adaptive mechanisms ,
Explanation:- [/expand]

10. Humoral Immune mechanisms are mediated by
a. Antibodies
b. Compliment system
c. Cells
d. Inflammatory responses
[expand title=”View Answer and explanation” ] Answer: a. Antibodies ,
Explanation:- [/expand]

11. Immune system responds to
a. Self antigens
b. Non self antigens
c. Altered self antigens
d. Both Non self and Altered self antigens
[expand title=”View Answer and explanation” ] Answer: d. Both Non self and Altered self antigens ,
Explanation:- [/expand]

12. The immediate protection is conferred by
a. Innate mechanisms
b. Adaptive mechanisms
c. Both Innate and Adaptive mechanisms
d. Physiological mechanisms
[expand title=”View Answer and explanation” ] Answer: a. Innate mechanisms ,
Explanation:- [/expand]

13. The delayed but more specific and stronger response is conferred by
a. Innate mechanisms
b. Adaptive mechanisms
c. Both Innate and Adaptive mechanisms
d. Physiological mechanisms
[expand title=”View Answer and explanation” ] Answer: b. Adaptive mechanisms ,
Explanation:- [/expand]

14. The immune mechanism which is rather ‘fixed’ is
a. Both Innate and Adaptive mechanisms
b. Innate mechanisms
c. Adaptive mechanisms
d. Physiological mechanisms
[expand title=”View Answer and explanation” ] Answer: b. Innate mechanisms ,
Explanation:- [/expand]

15. The immune mechanism which is flexible and adaptable is
a. Both Innate and Adaptive mechanisms
b. Innate mechanisms
c. Adaptive mechanisms
d. Physiological mechanisms
[expand title=”View Answer and explanation” ] Answer: c. Adaptive mechanisms,
Explanation:- [/expand]

16. An identical protection to repeated antigenic exposure is the hall mark of
a. Both Innate and Adaptive mechanisms
b. Innate mechanisms
c. Adaptive mechanisms
d. Physiological mechanisms
[expand title=”View Answer and explanation” ] Answer: b. Innate mechanisms ,
Explanation:- [/expand]

17. A more heightened and enhanced protection to repeated antigenic exposure is
the hall mark of
a. Both Innate and Adaptive mechanisms
b. Innate mechanisms
c. Adaptive mechanisms
d. Physiological mechanisms
[expand title=”View Answer and explanation” ] Answer: c. Adaptive mechanisms ,
Explanation:- [/expand]

18. A primary and secondary response is distinct for
a. Both Innate and Adaptive mechanisms
b. Innate mechanisms
c. Adaptive mechanisms
d. Physiological mechanisms
[expand title=”View Answer and explanation” ] Answer: c. Adaptive mechanisms ,
Explanation:- [/expand]

19. The condition wherein immune system reacts to self antigens is
a. Tolerance
b. Innate immunity
c. Auto immunity
d. Immunodeficiency
[expand title=”View Answer and explanation” ] Answer: c. Auto immunity ,
Explanation:- [/expand]

20. One of the following that does not refer to immune dysfunction is
a. Allergy
b. Secondary responses
c. Immunodeficiency
d. Graft rejection
[expand title=”View Answer and explanation” ] Answer: b. Secondary responses ,
Explanation:- [/expand]

21. Unresponsiveness to antigens is known as
a. Allergy
b. Secondary responses
c. Immunodeficiency
d. Graft rejection
[expand title=”View Answer and explanation” ] Answer: c. Immunodeficiency ,
Explanation:- [/expand]

22. Invertebrates have
a. Innate immunity
b. Adaptive immunity
c. Lymphocytes
d. Antibodies
[expand title=”View Answer and explanation” ] Answer: a. Innate immunity ,
Explanation:- [/expand]

23. A complex Adaptive Immune System is present in
a. Invertebrates
b. Teleost fishes
c. Reptiles
d. Mammals
[expand title=”View Answer and explanation” ] Answer: d. Mammals ,
Explanation:- [/expand]

24. Over responsiveness to repeated antigenic exposure is
a. Anaphylaxis
b. Phylaxis
c. Tolerance
d. Immune suppression
[expand title=”View Answer and explanation” ] Answer: a. Anaphylaxis ,
Explanation:- [/expand]

25. Immunoglobulin molecules specific to a particular antigen are
a. Opsonins
b. Toxins
c. Antibodies
d. Agglutinins

[expand title=”View Answer and explanation” ] Answer: c. Antibodies ,
Explanation:- [/expand]