Innate and Adaptive Immunity Features

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When does tolerance to self-molecules and cells develop during the development of the immune repertoire?

After external antigen recognition
At the beginning of the process (correct)
At the end of the process
In the middle of the process

What is the initial focus of immune repertoire development?

Developing tolerance to self-molecules and cells (correct)
Producing antibodies
Activating T cells
Recognizing external antigens

Which aspect of immunity is prioritized first during immune repertoire development?

Response to allergens
Response to vaccines
Tolerance to self-molecules and cells (correct)
Response to infections

What is the sequence of events in the early stages of immune repertoire development?

Tolerance to self-molecules and cells, antibody production, T cell activation (D) Signup and view all the answers

What role does tolerance to self-molecules and cells play in immune system development?

It is crucial for preventing autoimmune reactions (D) Signup and view all the answers

What is a characteristic of T-independent antigens?

They stimulate specific immunoglobulin production without the need for T cells (A) Signup and view all the answers

Why do T-independent antigens not require T cells for immunoglobulin production?

They directly stimulate B cells without needing T cell signals (C) Signup and view all the answers

How do T-independent antigens differ from T-dependent antigens in terms of stimulation?

T-independent antigens activate B cells directly without T cell involvement (C) Signup and view all the answers

Which statement accurately describes the role of T-independent antigens in immunoglobulin production?

They circumvent the need for T cell help in antibody production (D) Signup and view all the answers

In the context of immunological response, what distinguishes T-independent antigens from T-dependent antigens?

T-independent antigens trigger B cell activation without needing signals from helper T cells (A) Signup and view all the answers

What type of antigens are Pneumococcal polysaccharide, lipopolysaccharide, and Flagella classified as?

T cell independent (TI) antigens (D) Signup and view all the answers

How does the immune response vary for T cell independent (TI) antigens on each exposure?

It tends to be similar on each exposure (A) Signup and view all the answers

Which of the following is NOT an example of a T cell independent (TI) antigen?

Influenza virus protein coat (D) Signup and view all the answers

What distinguishes T cell independent (TI) antigens from T cell-dependent (TD) antigens?

TI antigens do not require T cells for activation (B) Signup and view all the answers

How do T cell independent (TI) antigens typically elicit an immune response?

By directly activating B cells without the help of T cells (C) Signup and view all the answers

What is the main difference between innate and adaptive immunity in terms of specificity?

Innate immunity is specific for microbial antigens, while adaptive immunity is specific for both microbial and nonmicrobial antigens. (D) Signup and view all the answers

What is the characteristic of adaptive immunity that is not mentioned for innate immunity?

Memory (A) Signup and view all the answers

What are tolerogens?

Antigens (usually self) that induce immune unresponsiveness under normal conditions. (A) Signup and view all the answers

What is the characteristic of innate immunity that is not mentioned for adaptive immunity?

Tolerance to antigens (A) Signup and view all the answers

Based on the information provided, which of the following statements is correct?

Adaptive immunity has a broader specificity than innate immunity. (C) Signup and view all the answers

What is the main idea conveyed in the given text?

The immune system does not attack self-tissues in a normal, healthy state. (A) Signup and view all the answers

What can be inferred from the text regarding the immune system's function?

It distinguishes between self and non-self molecules. (D) Signup and view all the answers

Which of the following statements is NOT supported by the given text?

The immune system is inactive in a healthy state. (D) Signup and view all the answers

What can be inferred about the presence of an immune response against self-tissues?

It is an indication of an underlying health condition. (B) Signup and view all the answers

Based on the text, which of the following statements is true?

The immune system protects the body from self-attack. (D) Signup and view all the answers