Tag: innate and acquired immunity

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Questions Related to innate and acquired immunity

Multiple choice zoology diseases and immunity active and passive immunity acquired immunity innate and acquired immunity

When antibodies, extracted from other animals are injected into your body, what kind of immunity do you gain?

  1. Artificially active acquired immunity

  2. Artificially passive acquired immunity

  3. Naturally active acquired immunity

  4. Naturally passive acquired immunity
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When pre-formed antibodies extracted from an external animal or human source are injected into a body to provide immediate protection, it is classified as passive immunity. Since this protection is introduced by medical intervention rather than natural exposure, it is artificially acquired passive immunity.

Multiple choice zoology diseases and immunity active and passive immunity acquired immunity innate and acquired immunity

The transfer of antibodies from a pregnant mother to her fetus is a type of

  1. Naturally acquired passive immunity

  2. Artificially acquired active immunity

  3. Artificially acquired passive immunity

  4. Naturally acquired active immunity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Naturally acquired passive immunity is a type of antibody-mediated immunity conveyed to a fetus or infant by its mother. In humans, maternal antibodies are passed through the placenta to the fetus by an FcRn receptor on placental cells.

So, the correct option is 'naturally acquired passive immunity'.

Multiple choice bio-chemistry immunology active and passive immunity acquired immunity innate and acquired immunity

As a major component of the humoral response, a subset of the lymphoid population produces antibodies which are proteins that are specific for particular antigens.
The cells that produced these proteins are

  1. T-cells.

  2. B-cells.

  3. NK-cells.

  4. Macrophages.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In humoral response the antibodies are produced by the B cells

So, the correct answer is 'B-cells'

Multiple choice bio-chemistry immunity and blood groups active and passive immunity acquired immunity innate and acquired immunity

Which of the following statements about antibody molecules is not true?

  1. All are proteins

  2. All are immunoglobulins

  3. All have light and heavy chains

  4. All are produced by T-cells
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Antibodies are immune system-related proteins called immunoglobulins. Each antibody consists of four polypeptides– two heavy chains and two light chains joined to form a "Y" shaped molecule. Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). When an antigen binds to the B-cell surface, it stimulates the B cell to divide and mature into a group of identical cells called a clone.


So, the correct option is 'Option D'.

Multiple choice bio-chemistry immunity and blood groups active and passive immunity acquired immunity innate and acquired immunity

Cells involved in immune mechanism are

  1. Erythrocytes

  2. Lymphocytes

  3. Eosinophils

  4. Thrombocytes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A lymphocyte is one of the subtypes of white blood cell in a vertebrate's immune system. Lymphocytes include natural killer cells (which function in cell-mediated, cytotoxic innate immunity), T cells (for cell-mediated, cytotoxic adaptive immunity), and B cells (for humoral, antibody-driven adaptive immunity). They are the main type of cell found in lymph. Lymphocytes are involved in the activation of the immune system.

So, the correct answer is 'Lymphocytes'.

Multiple choice bio-chemistry immunity and blood groups active and passive immunity acquired immunity innate and acquired immunity

The term humor in humoral immunity implies 

  1. Hormones

  2. Bone marrow

  3. Plasma and lymph

  4. Cerebrospinal fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Humoral immunity is the aspect of immunity that is mediated by macromolecules found in extracellular fluids such as secreted antibodies, complement proteins, and certain antimicrobial peptides. Humoral immunity is so named because it involves substances found in the humour (plasma or lymph) or body fluids. It involves antibody, so, it is often referred to as antibody-mediated immunity.

So, the correct answer is 'Plasma and lymph'.

Multiple choice bio-chemistry immunity and blood groups active and passive immunity acquired immunity innate and acquired immunity

The letter T in T-lymphocytes refers to 

  1. Thyroid

  2. Thymus

  3. Thalamus

  4. Tonsil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. T cells can be distinguished from other lymphocytes such as B cells and natural killer cells by the presence of a T-cell receptor on the cell surface. T-cells are produced from the bone marrow. They are called T cells because they mature in the thymus from thymocytes.

So, the correct answer is 'Thymus'.

Multiple choice bio-chemistry immunity and blood groups active and passive immunity acquired immunity innate and acquired immunity

Mark the correct sequence of humoral immunity.
A) Immunocompetent B cell
B) The release of antibodies into humor
C) B cell progenitor
D) Plasma Cell
E) Functional B cell

  1. C A E B D

  2. C E A D B

  3. C A E D B

  4. A C E D B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Humoral immunity is the type of acquired immunity and it includes the action of antibodies. When system observe any antigen or foreign agent inside the body id activates the B-cell and fit converted into immunocompetent B-cells. Further, they get activated and form functional B cells, which are present on plasma cells and release the antibody formed.

So the correct option is "CAEDB".

Multiple choice bio-chemistry immunity and blood groups active and passive immunity acquired immunity innate and acquired immunity

Mark the correct sequence of cell mediated immunity.
A) Release of enzymes like perforins and granzymes
B) Destruction of infected cell
C) Antigen presenting cells process the exogenous antigens
D) Binding of T cells to APCs

  1. C D A B

  2. C A D B

  3. C D B A

  4. A B C D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is a type of immunity that does not involve antibody but includes phagocytosis which provides protection against pathogens. Presence of pathogens activate T-lymphocytes and convert it into effector T-cells and bind to APCs and release the enzyme like perforins which helps in the destruction of the cell which is infected.

So the correct option is "C D A B".

Multiple choice bio-chemistry immunity and blood groups active and passive immunity acquired immunity innate and acquired immunity

The cells active in production of antibodies are

  1. Kupffer cells

  2. Plasma cells

  3. Mast cells

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

Plasma cells of B-lymphocytes are derived from the memory B-lymphocytes and are involved in the production of antibodies actively in the blood.

A. Kupffer cells are phagocytic cells in the liver.
B. Plasma cells produce antibodies.
C. Mast cells secrete histamine in response to inflammation.
D. Langerhans cells are in the pancreas and they secrete hormones.
Hence, the correct answer is 'Plasma Cells'