Types of T Cells

Q. Assertion : Interaction of lymphocytes and antigens occur in the secondary lymphoid organs.
Reason : Thymus and bone marrow provides the microenvironment for the lymphocytes to interact with the antigen.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both the assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but the reason is false
4. Both the assertion and reason are false

Q.

Choose the correct statement about Natural killer cells.

1. NK cells are a type of lymphocytes

2. NK cells aid in killing non self cells

3. Mechanism of action of NK cells for killing non self is same as T killer cells

4. Only A is correct

Q.

Question 23.3

State whether true or false

B-lymphocytes provide cell-mediated immunity.

Q. The two types of T cells are killer T cells and___.

Q. Lymphocytes and phagocytes are types of

1. Eosinophils - allergic response
2. Basophils – secrete histamine and serotonin.
3. Neutrophils - phagocytic and destroy foreign organisms
4. Monocytes – Secrete Heparin

Q.

What is a B Cell?

Q.

Are there memory T cells?

Q. The two types of T-Cells are ___ and Killer T cells.

Q.

What is salt sensitivity?

Q. Which of the following white blood cells increases during allergy?

1. Acidophil
2. Basophil
3. Lymphocyte
4. Neutrophil

Q. The most active phagocytic white blood cells are

1. Eosinophils and lymphocytes
2. Neutrophils and monocytes
3. Neutrophils and eosinophils
4. Lymphocytes and macrophages

Q. Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

1. Lymphocytes
2. Neutrophils
3. Basophils
4. Monocytes

Q.

T killer cells get activated only after a signal from Helper T cells

1. True

2. False

Q.

State whether true or false:
T killer cells get activated only after a signal from helper T cells.

1. False

2. True

Q. T-lymphocytes

1. Have three main types - cytotoxic, helper and suppressor cells
2. Are produced in the thyroid
3. Originate in lymphoid tissue
4. Scavenge damaged cells and cellular debris

Q. Which of the following is released initially as an inflammatory response?

1. Interferon
2. Chitin
3. Cytokines
4. Cytokinin

Q. Cyclosporin is useful in

1. Prophylactic for viruses
2. Immunosuppressant
3. Prophylactic for marasmus
4. Treating allergic eozema

Q. The two types of T-cells are ___ and ___.

1. Killer T Cells, B memory cells
2. None of the above

3. Helper T cells, Killer T cells

4. MHC, T cells

Q.

Arrange in order of action.

(i) Activation of helper T cells

(ii) Release of cytokines

(iii) Activation of killer T cells

(iv) Release of perforins

(v) Bursting of infected cells

1. i, ii, iii, iv, v

2. ii, i, iv, iii, v

3. i, iv, iii, ii, v

4. ii, iii, iv, i, v

Q.

Choose the correct statements about Natural Killer cells.

1. NK cells are a type of lymphocytes

2. NK cells aid in killing non self cells

3. Mechanism of action of NK cells for killing non self is same as T killer cells

4. Only A is correct

Q. Observe the figure and
(a) Identify the process and write its name.
(b) Write the step of the process in each stage.

Q. If T cytotoxic lymphocytes are removed from the body, what would be affected the most?

1. Humoral immune response
2. Antibody production
3. Cell-mediated immune response
4. B lymphocyte production

Q.

State the functions of the following in blood.
(i) Fibrinogen
(ii) Globulin
(iii) Neutrophils
(iv) Lymphocytes

Q.

Name the following:
(d) The process of ingesting bacteria by WBCs.

Q. The two types of T-cells are ___ and ___.

1. Helper T cells, Killer T cells

2. Killer T Cells, B memory cells
3. MHC, T cells
4. None of the above

Q. Schuffner's dots are related to

1. Mosquito
2. Leucocytes
3. Entamoeba histolytica
4. RBCs of humans

Q.

State whether true or false:
T killer cells get activated only after a signal from helper T cells.

1. True

2. False

Q. Cells responsible for cell mediated response are

1. cytotoxic T cells
2. B cells
3. helper T cells
4. All of these

Q.

Arrange in order of action.

(i) Activation of helper T cells

(ii) Release of cytokines

(iii) Activation of killer T cells

(iv) Release of perforins

(v) Bursting of infected cells

1. ii, i, iv, iii, v

2. i, ii, iii, iv, v

3. ii, iii, iv, i, v

4. i, iv, iii, ii, v

Q. T-lymphocytes

1. Have three main types - cytotoxic, helper and suppressor cells
2. Are produced in the thyroid
3. Originate in lymphoid tissue
4. Scavenge damaged cells and cellular debris