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HUMAN DEFENCE MECHANISM

Total questions: 40

Worksheet time: 3hrs 20mins

Name
Class
Date
1.

Pathogen enters our body through

a)

Skin

b)

Respiratory system

c)

Digestive system

d)

All above

2.

Our body has 3 lines of body defence to fight pathogens

a)

True

b)

False

3.

Our first line of body defence is

a)

Antibodies

b)

White blood cells

c)

Skin

4.

White blood cells fight the phatogen through ...... process

a)

Phagocynisis

b)

Phagorytosis

c)

Phagocytosis

d)

Phagolysis

5.

In third line of body defence, pathogen will fight with

a)

Red blood cell

b)

White blood cell

c)

Antibody

d)

Anybody

6.

Pathogen will enter the skin if there is a....on the skin

a)

Wound

b)

Injured

c)

Hole

d)

Food

7.

Mucuos membrane is the membrane that produced mucous along the

a)

Reproductive system

b)

Digestive system

c)

Respiratory system

d)

Lymphatic system

8.

Diagram shows a process of

a)

Erytrocytisis

b)

Phagocytosis

c)

Parolysis

d)

Phagonisis

9.

Third line of body defence involving the production of

a)

Antiserum

b)

Antibody

c)

Anybody

d)

Antivaccine

10.

What happen in the diagram?

a)

Antibody stick up all antigens into a lumps

b)

Antigen stick among themselves to build an large lump

c)

Antibody release toxin to kill antigens

d)

Antigen absorbs nutrien from antibody

11.

A protein produced by white blood cells into blood stream to fight disease.

This statement refers to ...

a)

Antigen

b)

Antiaging

c)

Antiserum

d)

Antibody

12.

Pathogens, toxin moleculs and blood cells from other blood groups are known as ....

a)

Antiserum

b)

Antiseptic

c)

Antigen

d)

Antibody

13.

Proteins that have a specific fit to a specific antigen are called

a)

allergens

b)

antibodies

c)

antihistamines

d)

none of these

14.

What are made in the thymus, spleen, bone marrow and lymph nodes?

a)

erythrocytes

b)

histocytes

c)

lymphocytes

d)

platelets

15.

B lymphocytes produce

a)

allergens

b)

antigens

c)

antibodies

d)

all of these

16.

Which cells actually kill invading bacteria and viruses?

a)

Antigens

b)

B cells

c)

T cells

d)

thrombocytes

17.

Which lymphocytes are stimulated by vaccinations?

a)

B cells

b)

T cells

c)

AAA cells

d)

V cells

18.

What is the most important thing about colostrum

a)

its full of fat

b)

it replaces shivering

c)

its got antibodies

d)

its free

19.

What is an attenuated virus>

a)

a dead one

b)

a disabled one

c)

a manufactured one

d)

a natural one

20.

Which of the following is/are part(s) of the specific defence mechanism?


(1) production of histamine

(2) phagocytosis

(3) production of antibodies

a)

(1) only

b)

(3) only

c)

(1) and (3) only

d)

(2) and (3) only

21.

Which of the following comparisons of B cells and T cells is correct?

a)
b)
c)
d)
22.

Which of the following descriptions about antibodies is/are correct?


(1) Antibodies act only on specific antigens.

(2) Antibodies have a memory for specific antigens.

(3) Antibodies are stored in the lymph nodes after use.

a)

(1) only

b)

(1) and (2) only

c)

(1) and (3) only

d)

(2) and (3) only

23.

Alex was infected by a pathogen for the first time two months ago. He was then exposed to the same pathogen two weeks ago. Which of the following graphs correctly shows the change in pathogen level in Alex’s blood?

a)
b)
c)
d)
24.

John received an injection of antibodies in order to develop immunity against tetanus, a bacterial disease which can cause paralysis and death. Which of the following graphs correctly shows the changes in the antibody concentration in his blood?

a)
b)
c)
d)
25.

Which of the following combinations correctly states the types of immunity?

a)
b)
c)
d)
26.

The body producing antibodies in response to a pathogen entering from the environment e.g. catching a cold, is called...?

a)

Active natural immunity

b)

Active artificial immunity

c)

Passive natural immunity

d)

Passive artificial immunity

27.

Antibodies produce in the body due to a vaccine is called...?

a)

Active natural immunity

b)

Active artificial immunity

c)

Passive natural immunity

d)

Passive artificial immunity

28.

Antibodies entering the body from another organism through breastmilk or crossing the placenta is called...?

a)

Active natural immunity

b)

Active artificial immunity

c)

Passive natural immunity

d)

Passive artificial immunity

29.

Antibodies entering the body from another organism by injection is called...?

a)

Active natural immunity

b)

Active artificial immunity

c)

Passive natural immunity

d)

Passive artificial immunity

30.

Where do lymphocytes and monocytes form?

a)

Bone marrow

b)

Spleen

c)

Thymus

d)

Lymph nodes

31.

A foreign particle that causes the production of antibodies is called...?

a)

Antigen

b)

Monocyte

c)

Pathogen

d)

Leucocyte

32.

Lymphocytes that recognize antigens on the surface of other white blood cells and cause B cells to replicate are called...?

a)

Helper T cells

b)

Killer T cells

c)

Suppressor T cells

d)

Memory T cells

33.

Lymphocytes that destroy abnormal body cells are called...?

a)

Helper T cells

b)

Killer T cells

c)

Suppressor T cells

d)

Memory T cells

34.

Lymphocytes that survive for years after the infection and speed up any subsequent action of T cells are called...?

a)

Helper T cells

b)

Killer T cells

c)

Suppressor T cells

d)

Memory T cells

35.

Where do T cells (T lymphocytes) mature?

a)

Thalmus

b)

Hypothalmus

c)

Bone marrow

d)

Thymus

36.

Which of the following is NOT an organ of the immune system?

a)

Thymus

b)

Skin

c)

Spleen

d)

Lymph nodes

37.

What is the role of B lymphocytes?

a)

Recognize an antigen and produce a specific antibody in response

b)

Reduce the immune response of other cells so immune system does not overreact to an infection

c)

Engulf foreign bodies and digest them

d)

Attack pathogens by releasing enzymes to put holes in their cell walls

38.

What do antibiotics kill?

a)

bacteria

b)

virus

c)

fungus

39.

A disease causing organism is called...?

a)

Parasite

b)

Pathogen

c)

Microbe

d)

Bacteria

40.

The ability to resist infection is called...?

a)

Immunity

b)

Invulnerability

c)

Resistance

d)

Health