Introduction to Cell Mediated Immunity

Q.

What are the 3 antigen presenting cells?

Q. Which among the following is not an example of passive immunity?

1. Transfer of maternal antibodies to the foetus through the placenta
2. Immunity provided through colostrum
3. Both a and b
4. Introduction of antigens deliberately during vaccination

Q.

Give one example of polygenic Inheritance.

Q.

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. cellular barriers

3. cytokine barriers

4. physical barriers

Q. Match the following columns and select the correct option.

	Column-I		Column-II
(a)	Eosinophils	(i)	Phagocytic, agranular
(b)	Basophils	(ii)	Release histaminase
(c)	Neutrophils	(iii)	Secrete histamine, involved in inflammation
(d)	Monocytes	(iv)	Most abundant of total WBCs

1. (a) (b) (c) (d)
   (ii) (iii) (iv) (i)
2. (a) (b) (c) (d)
   (iii) (ii) (iv) (i)
3. (a) (b) (c) (d)
   (ii) (iii) (i) (iv)
4. (a) (b) (c) (d)
   (iii) (i) (iv) (ii)

Q. Which of the following cells are most effective in destroying intracellular pathogens

1. T-cells
2. B-cells
3. Antibodies
4. None of the above

Q.

What is the role of thymosins in cell-mediated immunity?

Q.

Name the hormone that helps in cell-mediated immunity.

Q.

What Is The Purpose Of Tissue Typing?

Q. What is the epidermal cell modification in plants which prevents water loss?

Q.

Why cytokinins are used in tissue culture?

Q.

A synthetic cytokinin.

Q. Which cell of the connective tissue is known as ‘Basophil of Connective Tissue’?

1. Macrophage
2. Mast cell
3. Fibroblast
4. Adipocyte

Q. Epistasis is a type of gene interaction showing

1. enhancing the effect of a gene by a non-allelic gene
2. control of a phenotype by three genes
3. masking of the effect of a gene by a non-allelic locus
4. producing a new character when two nonallelic genes happen together in an individual

Q. Active immunity is produced in one’s body by exposure to:
i. Toxoids
ii. Subclinical infection
iii. Antitoxins
iv. Immunoglobulins
v. Antigen

1. ii, v
2. ii, iv, v
3. i, ii, v
4. ii, iii, v

Q.

What cell are responcible for production of thrombocytes

Q. Which of the following is true for cellular immunity

1. Cellular immunity is provided by the T-cells
2. Cellular immunity is provided by the B-cell
3. Cellular immunity can act against antigens
4. Cellular immunity targets intracellular pathogen

Q. Which of the following cells are most effective in destroying intracellular pathogens

1. T-cells
2. B-cells
3. Antibodies
4. None of the above

Q. Down's syndrome occurs as a result of :

1. Tetrasomy
2. Trisomy
3. Autopolyploidy
4. Allopolyploidy

Q. The major difference between humoral immunity and cell-mediated immunity is that:

1. humoral immunity is non-specific, whereas cell-mediated immunity is specific for particular antigens
2. humoral immunity cannot function independently; it is always activated by cell-mediated immunity
3. the agents of humoral immunity are carried in the bloodstream, whereas the cells of the latter are concentrated in lymph nodes
4. humoral immunity acts against free-floating antigens, whereas cell-mediated immunity works against pathogens that. have entered body cells

Q. Transplantation of tissues/organs often fails due to non-acceptance by the patient’s body. Which type of immune response is responsible for such rejections?

Q. What we mean by the term non - specific in case of innate immunity?

Q. Name the two types of immune system in a human body. Why are cell mediated and humoral immunities so called?

Q. Which of the following is true for cellular immunity

1. Cellular immunity is provided by the T-cells
2. Cellular immunity is provided by the B-cell
3. Cellular immunity can act against antigens
4. Cellular immunity targets intracellular pathogen

Q. Which cells of connective tissue secrete histamine?

Q.

Can you live without B-cells?

Q. In which one of the following options the two examples are correctly matched with their particular type of immunity?

1. Examples : Anti-tetanus and anti-snake bite injections, Type of immunity : Active immunity
2. Examples : Polymorphonuclear leukocytes and monocytes, Type of immunity : Cellular barriers
3. Examples : Saliva in mouth and tears in eyes, Type of immunity : Physical barriers
4. Examples : Mucus coating of epithelium lining the urinogenital tract and the HCI in stomach, Type of immunity : Physiological barriers

Q. Humoral immunity is mediated by

1. R-cells.
2. T-cells.
3. NK-cells.
4. Plasma cells.

Q. Humoral immunity is mediated by

1. Neutrophil
2. Eosinophil
3. Plasma cell
4. Cytotoxic T cell

Q. Central dogma is not directly connected with synthesis of

1. mRNA
2. Polypeptide
3. Both A and B
4. Amino acids