Tag: innate and acquired immunity

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Questions Related to innate and acquired immunity

Multiple choice zoology diseases and immunity innate and acquired immunity body fluids and immune responses immunity and immune system

To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes belong?

  1. Physiological barriers

  2. Physical barriers

  3. Cytokine barriers

  4. Cellular barriers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The immune system provides both the types of immune response innate and acquired immune responses. Innate immunity occurs naturally due to genetic factors or physiology. It is a native immune response that present by birth. It provides physical barrier such as skin, Physiological barriers such as pH of the stomach, bile juice, saliva and tears, cellular barriers such as leucocytes, macrophage cell and cytokine barrier.

Thus, the correct answer is option A.

Multiple choice zoology diseases and immunity innate and acquired immunity body fluids and immune responses immunity and immune system

Innate immunity is provided by 

  1. Antibody

  2. Neutrophils

  3. B-cells

  4. T-cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The innate immune is an older evolutionary defense strategy  and it is dominant immune system response found in plants ,fungi,insects,and primitive multi-cellular organisms..The innate leukocytes includes:

  1.  the phagocytes(macrophages ,neutrophils and dendritic cells),
  2. innate lymphoid cells,
  3. mast cells,
  4. eosinophils
  5. ,basophils and 
  6. natural killer cell.

These cells identify and eliminate pathogens either by attacking larger pathogens through contact or by engulfing and then killing micro-organism.Hence ,innate immuniy is provided by neutrophils.

So,the correct answer is "neutrophils"

Multiple choice zoology diseases and immunity innate and acquired immunity body fluids and immune responses immunity and immune system

Immunomodulators 

  1. Stimulates immune system

  2. Suppress immune system

  3. Some stimulate ,others inhibit immune system

  4. Never suppress immune system
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Immunomodulation is modulation (regulatory adjustment) of the immune system. Homeostasis in the immune system, whereby the system self-regulates to adjust immune responses. Immunomodulators are a part of immunotherapy, in which immune responses are induced, amplified, attenuated, or prevented according to therapeutic goals.

So, the correct answer is 'Some stimulate, others inhibit the immune system'.

Multiple choice zoology diseases and immunity innate and acquired immunity body fluids and immune responses immunity and immune system

Which of the following correctly exemplifies acquisition of active immunity by a person?

  1. A person who has recovered from an attack of mumps, develops natural active immunity

  2. When ready-made antibiotics are directly injected into a person's body to protect him against foreign agents, then he acquires artificial active immunity

  3. When a person is vaccinated for a disease then he acquires natural active immunity for that disease

  4. When antibody is transferred from mother to the fetus through placenta then the developing baby acquires artificial active immunity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Active immunity occurs when the body produces its own antibodies in response to an antigen. Recovering from a natural infection like mumps triggers the body's immune system to create memory cells and antibodies, which is natural active immunity.

Multiple choice zoology diseases and immunity innate and acquired immunity body fluids and immune responses immunity and immune system

Non-specific immunity is provided by all except ________________.

  1. Kupffer cells

  2. alveolar macrophases

  3. lymphocytes

  4. neutrophils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Non-specific (innate) immunity includes physical barriers and phagocytes like Kupffer cells, alveolar macrophages, and neutrophils. Lymphocytes (T and B cells) are the primary components of specific (adaptive) immunity.

Multiple choice zoology diseases and immunity innate and acquired immunity body fluids and immune responses immunity and immune system

Which one of the following is mismatched

  1. Helper T-cells-help complement react

  2. Memory T-cells-long-living line of 1-cells

  3. Suppressor T-cells-shut down the immune response

  4. Cytotoxic T-cells-active in tissue rejection
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A- Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.

B- However, a small portion of long-lived T cells still remains for rapid response upon pathogen re-exposure. This kind of cells is called memory T cells. Because memory T cells have been trained to recognize specific antigens, they will trigger a faster and stronger immune response after encountering the same antigen. This is how vaccines work to protect us against infection.
C- Suppressor T cells are sensitive to high concentrations of circulating lymphokine hormones, and release their own lymphokines after an immune response has achieved its goal. This signals all other immune-system participants to cease their attack. Some memory B-cells remain after this signal to ward off a repeat attack by the invading organism.
D- A cytotoxic T cell (also known as TC, cytotoxic T lymphocyte, CTL, T-killer cell, cytolytic T cell, CD8+ T-cell or killer T cell) is a T lymphocyte (a type of white blood cell) that kills cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.

So, the correct option is 'option A'.

Multiple choice zoology diseases and immunity innate and acquired immunity body fluids and immune responses immunity and immune system

Incorrect statement about non-specific immunity

  1. It includes barriers of defence

  2. It developed by contract with pathogen

  3. It operates faster

  4. It is inherited
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Non-specific immunity operates fast and it is inherited genetically and it is developed by contact with a pathogen but it does not act as a barrier of defence.

So the correct option is 'It includes barriers of defence.'