Immunology Test

0 votes, 0 avg

You will have 60 minutes to complete all the questions. After the timer reaches 60 minutes, the exam will end and be saved automatically. Good luck! *Fingers crossed*

The timer has been reached. The exam has now been terminated and saved.

Immunology Test

1 / 60

Which of the following require the Thymus?:

a. B cel apoptosis

b. T cells rogenitor

c. T cells maturation

d. B cellsmaturation

2 / 60

What distinguishes helper T-cells from cytotoxic T-cells:

a. Tc recognize antigen with MHC I and Th recognize antigen with MHC II

b. Th recognize antigen with MHC I

c. Tc recognize antigen with MHC I

d. Th recognize antigen with MHC II

3 / 60

One principal function of the Class I and Class II major histocompatibility complex is to :

a. Present antigen for recognition by the T-cell receptor

b. Transduce the signal to the T-cell interior

c. Stimulate production of interleukins

d. Mediate immunoglobulin class

4 / 60

The following statements are true for Class III MHC molecules, EXCEPT :

a. Recognized by the CD8

b. Tc cells kill an infected cells

c. On the APC cells membrane

d. Transport protein

5 / 60

All of the following are true with respect to IgM antibodies, EXCEPT :

a. They mediate allergic reaction

b. They occur on the surface of lymphocytes

c. They are glycoproteins

d. They fix complement

6 / 60

The following statements are true for the antigenic determinant :

a. Is paratope and Small part of the antigen

b. Is paratope

c. Small part of the antigen

d. Is the combining site of an antibody

7 / 60

Class of immunoglobulins occurs :

a. Mediates immunoglobulin class switching

b. Immunizations, going from IgM to IgG

c. Binds complement

d. Causes the histamine release

8 / 60

The two types of lymphocytes are ?:

a. Erythrocyte and T cells

b. T and B cells

c. Platelet and Erythrocyte

d. Platelet and B cells

9 / 60

All of the following are true with respect to IgE molecules, EXCEPT :

a. They can effect the release of histamine.

b. They are involved in mediating anti-parasitic immune responses

c. They are the principal immunoglobulin class involved in allergic reactions.

d. They will cross the placenta and fix complement)

10 / 60

In the alternative pathway of the complement system, the factors below are useful to prevent the generation of C3 convertase :

a. Factor P

b. Factor F

c. C3-BP

d. C1-INH

11 / 60

Name the process a cell such as a neutrophil or a macrophage uses to ingest (eat) its prey.:

a. Chemotaxis

b. Botulism

c. Halitosis

d. Phagocytosis

12 / 60

Biological effect of Complement C2b is:

a. Phagocytosis

b. Edema

c. Opsonisation

d. Anaphylaxis

13 / 60

The factor that stabilize C3 convertase of alternative pathway is :

a. Factor I

b. DAF

c. Factor H

d. Factor P

14 / 60

The natural passive immunity are characterized by?:

a. Kill vaccin Immune cell

b. Placental transfert

c. Immunoglobulins

15 / 60

The most infection chronic and acute HBV is in?:

a. Adult

b. Children

c. Female

d. Male

16 / 60

The function of T cytotoxic lymphocyte is?:

a. Lyse pathogen

b. Lyse bacterie

c. Lyse target cell

d. Lyse paasite

17 / 60

One principal function of the Class I and Class II major histocompatibility complex is to:

a. Transduce the signal to the T-cell interior

b. Help T cell for the recognition Antigen

c. Stimulate production of interleukins

d. Mediate immunoglobulin class

18 / 60

Which of these cell types can play a primary role in attacking and killing cancer cells?:

a. Mast cell

b. Cytotoxic

c. T cell

d. Platelet

19 / 60

All of the following are true with respect to IgG antibodies, EXCEPT:

a. They fix complement

b. They occur on the surface of B lymphocytes

c. They are glycoproteins

d. They mediate allergic reaction

20 / 60

All of the following are true for IgE molecules, EXCEPT:

a. They involved in allergic reactions.

b. They anti-parasitic immune responses.

c. They can fix complement.

d. They can cause the release of histamine.

21 / 60

An antigenic determinant is:

a. Recognized by macrophage

b. Molecule of antigen

c. A fragment of Antigen

d. Recognized by a epitope

22 / 60

These cells can be infected by Mycobacterium tuberculosis:

a. Lymphocyte

b. Macrophage

c. Neutrophil

d. Eosinophil

23 / 60

The initial complement component that is bound by complement-fixing antibodies is:

a. C1s

b. C3b

c. C5a

d. C1q

24 / 60

Lymphocytes that develop immunocompetence in the thymus are?:

a. T cells

b. LGL's

c. NK cells

d. B cells

25 / 60

The tests below show that patient has an chronic infection of HBV?:

a. HBsAb negative

b. HBcAb positive

c. HBsAg positive

d. All answers

26 / 60

The function of Class III MHC proteins are :

a. Recognized antigen by CD8

b. Recognized antigen by CD4

c. Transport complement protein

d. Lyse antigen

27 / 60

One principal function of complement is to:

a. Mediate the release of histamine

b. Inactivate perforins

c. Bind antibodies attached to cell surfaces and to lyse these cells

d. Phagocytize antigens

28 / 60

Which of the following immunoglobulin can across placenta with the highest concentration?:

a. IgG1

b. IgG3

c. IgG2

d. IgG4

29 / 60

The following statements are true for IgE, EXCEPT:

a. Can cross the placental barrier

b. The least immunoglobulin in the plasma

c. They bind to mast cells

d. They produce allergic reaction

30 / 60

Which immunoglobulin is used to test for blood group:

a. IgA

b. IgG

c. IgM

d. IgE

31 / 60

Immunity acquired after an infection is?:

a. Active immunity

b. Innate immunity

c. Response immunity

d. Passive immunity

32 / 60

The cancer of T cells are called?:

a. Hodgkin lymphoma

b. Extranodal T cell lymphoma

c. All answers

d. Non-Hodgkin lymphoma

33 / 60

The Complement that gives Anaphylotoxin much potent is:

a. C4a

b. C5a

c. C3a

d. C2b

34 / 60

Which of the following components of the innate immune system involves the release of
histamine?:

a. Neutrophil

b. Eosinophil

c. Macrophage

d. Tissue mast cell

35 / 60

B cells recognised antigen presented by APC?:

a. T-dependent antigen

b. T-independent antigen

c. Nonself – antigen

d. Self – antigen

36 / 60

Which of the following organ is primarily infected by Hepatitis viruses?:

a. Lung

b. Spleen

c. Intestines

d. Liver

37 / 60

The following statements are true for Class I MHC molecules, EXCEPT :

a. Tc cells kill an infected cells

b. On the APC cells membrane

c. Participated in Th function

d. Recognized by the CD8

38 / 60

Identity the phagocytic cells from the following combinations:

a. Eosinophil and neutrophil

b. Macrophage and eosinophil

c. Macrophage and neutrophil

d. Lymphocyte and eosinophil

39 / 60

Which of the following is NOT a major feature (characteristic) of the adaptive immune
system?:

a. Specificity

b. Diversity

c. Improvement

d. Memory

40 / 60

In a chronic infection of Hepatitis B, the typical serologic course are :

a. HBsAb

b. HBcAb

c. HBsAg

d. HBsAg and HBcAb

41 / 60

B and T cells are produced by stem cells located in:?:

a. Liver

b. Bone marrow

c. Spleen

d. Circulatery system

42 / 60

The hapten carrier conjugate can activate B cells to secrete antibody :

a. Immunoglobulin-Epitope

b. Antigen

c. Immunoglobulin

d. Antigenic determinant

43 / 60

Class II MHC proteins are :

a. Recognized by CD8

b. Used to participate in helper function

c. Recognized by CD4

d. Recognized by CD4 and Used to participate in helper function

44 / 60

The following answers are true for IgM antibodies, EXCEPT:

a. Anti infectious

b. Fix complement

c. Cause of allergy

d. Pentametric form

45 / 60

Humoral immunity consists of:

a. Cytotoxic cells

b. Pathological cells

c. Normal cells

d. Immunoglobulins

46 / 60

The following immunoglobulin has extra domain and long tail :

a. IgM

b. IgA

c. IgE

d. IgG

47 / 60

Class II MHC molecule works for?:

a. Tc function

b. An antigen fragment

c. B cell activation

d. T helper function

48 / 60

The following statements are true for Immunoglobins, EXCEPT:

a. All have receptors for complement

b. Are antibodies

c. Five major classes IgM, IgG, IgA, IgD, IgE

d. Possess both variable and constant regions

49 / 60

Immunoglobulins do which of the following?:

a. Opsonisation

b. All of the above

c. Antigen binding

d. Complement fixation

50 / 60

Which of the followings are NOT TRUE regarding an immune response:

a. The principal function of the T3 complex is signal transduction to the cell's interior

b. Lymphokines are produced by T-cells in response to antigen presentation by antibody

c. The T4 serves an auxiliary role with MHC class II proteins in helper cell reactions

d. The T8 serves an auxiliary role with MHC class I proteins in cytotoxic reactions

51 / 60

One principal function of complement is not true:

a. Activate perforins

b. Mediate the release of histamine

c. Phagocytize antigens

d. Lyse target cells

52 / 60

How many serotypes of HCV in the world?:

a. 6

b. 2

c. 4

d. Many

53 / 60

Clinical abnormalities of the Immune system can result from the activities below, EXCEPT:

a. Bacterial infection

b. T cell secrete cytokine

c. HIV Infection

d. Abnormal lymphocyte proliferation

54 / 60

Which nonspecific defense cells specialize in attacking cancer cells and virus-infected cells?:

a. B cells

b. NK cells

c. Macrophages

d. TH cells

55 / 60

Which cell is directly secreted immunoglobulin:

a. Plasma cell

b. Macrophage

c. B lymphocyte

d. T lymphocyte

56 / 60

The azerophilic granule used to facilitate phagocytosis:

a. Virus

b. Mycose

c. Bacteria

d. Parasite

57 / 60

HBV infection is characterized by the present of ?:

a. HBeAg

b. HBsAg

c. All answers

d. HBcAg

58 / 60

Which of the following statements about leukocyte function is false?:

a. Eosinophils deliver toxic granules to kill parasites. They are also involved in allergic reactions.

b. Macrophages are phagocytic cells that are involved in the adaptive response.

c. Neutrophils engulf damaged cells and pathogens by phagocytosis.

d. Leukocytes are involved in the immune response.

59 / 60

The component of immune system that can cause inflammation is :

a. Macrophage

b. Complement

c. Immunoglobulin

d. T lymphocytes

60 / 60

The functional activity of the T-cell:

a. Occurs after recognition of an epitope

b. Can be mediated through cytokines

c. Is related with CD4 or CD8 associated polypeptides

d. Is related with CD4 or CD8 associated polypeptides, Occurs after recognition of an epitope, Can be mediated through cytokines

Your score is

The average score is 74%

Any comments?

Any problems/errors or mistakes found while testing, please let us know for modification!

និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត