Name Any Two Types of Cells that Act as 'Cellular Barriers' to Provide Innate Immunity in Humans. - Biology


Name any two types of cells that act as 'cellular barriers' to provide innate immunity in humans.



Leukocytes (WBC) and natural killer in the blood are two types of cells that act as 'cellular barriers' to provide innate immunity in humans

Concept: Immunity
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2013-2014 (March) Delhi Set 1

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Discuss with your teacher what does ‘a suitable gene’ means, in the context of DNA vaccines.

Name the primary and secondary lymphoid organs

Differentiate the following and give examples of Active and passive immunity

Write a note on erythrocytes.

Suggest a method to ensure an anamnestic response in humans.

What are interferons?

Name the cells that are released from the above-mentioned gland. Mention how they help in immunity.

In the following questions/statements has four suggested answers. Rewrite the correct answer

An antiviral protein released from infected and dying cells is:

(A) Antigen

(B) Antibody

(C) Antiserum

(D) Interferon

Expand the following: SCID

How does the human body respond when vaccine is introduced into it?

''Abnormally, large numbers of WBCs in the blood are usually an indication of some infection in our body''. Comment on the statement.

Given below is a scheme of classifying immunity against human diseases. Fill up the types of immunity in the blanks 1-9.

Name the following:

The category of immunity required in the treatment of snake-bite.

Write the full forms of AIDS.

Write the full forms of: BCG

Differentiate between: Active immunity and passive immunity

Write the full forms of: DPT vaccine

Write the full forms of: ATS

Mention if the following statement is true (T) or false (F).

Treatment by the use of chemicals is known as allopathy.

Give the technical term for the kind of proteins produced in the blood to fight and destroy harmful micr

Answer the following question:

Name the antibody which is most effective in allergies.

Give one significant difference between primary lymphoid organs and secondary lymphoid organs. Give one example of each.

Mention one application of the following:

State the role of the thymus as a lymphoid organ. Name the cells that are released from it and mention their function.

Mention one application of the following:

Mention one application of the following:

Both B-cells and T-cells are derived from __________.

Differentiate between B-cells and T-cells.

What do the abbreviations CMIS denote?

Which one of the following is the most accurate definition of the term ‘health’?

What are congenital diseases?

State the significance of mother’s milk to a newborn.

Enlist any two features of Acquired immunity.

Explain the importance of epithelial surface in innate immunity.

Explain the various types of acquired immunity.

In acquired immunity there is a specific mechanism for each foreign molecule. This property is known as _______.

Virally infected cells release ______ to protect healthy cells from viral infection.

T-lymphocytes and B-lymphocytes are derived from ____________.

Which type of immunity is acquired due to infection?

The type of immunity generated by the transfer of lgA from mother to child is ____________.

The epithelial barrier of the innate immune system is ____________.

Which type of T-cells are responsible for producing lymphokines and stimulation of B- cells?

Identify the cells which release the antibodies.

______ is secreted by killer T - cells.

Match column I with column II and choose the correct option.

  Column I   Column II
i. Specificity a. Lymphocytes produced against each particular foreign molecule
ii. Diversity b. Self-cells are not attacked by immune system of the own body
iii. Memory c. Immune system works against multiple pathogens
iv. Discrimination between self and non-self d. Stronger immune response on second encounter

Production of which of the following is stimulated by secretin hormone?

______ provides a physical barrier. 

Innate immunity is ______

Which of the following components does not participate in innate immunity?


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