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Science Form 2_Chap 4.2 Body Defence

Total questions: 35

Worksheet time: 23mins

Name
Class
Date
1.

What is the role of nasal mucus?

a)

collect dead cells

b)

lubricate the nasal passage

c)

make phlegm

d)

trap particles

2.

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

a)

allergens

b)

antibodies

c)

antihistamines

d)

none of these

3.

Phagocytes kill pathogens by

a)

engulfing and digesting them

b)

producing antibodies

4.
Bacteria that are harmful to people are called _____.
a)
Pathogen
b)
Lymph Nodes
c)
Macrophages
d)
T Cells 
5.
Which of the following is the body’s first line of defense against disease?
a)
vaccines
b)
white blood cells
c)
antibodies
d)
skin
6.
What is the name of the body's defence system against diseases?
a)
The immune system
b)
The control system
c)
The vascular system
d)
The endocrine system
7.
What is the name of the white blood cell that ingests micoorganisms?
a)
Antitoxins
b)
Antigens
c)
Phagocytes
d)
Platelets
8.

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)
9.

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)
10.

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

a)
b)
c)
d)
11.
Pathogens are recognized by their...
a)
antigens
b)
antibodies
c)
killer t-cells
d)
B-cells
12.

What does defense mean?

a)

to change to fit the environment

b)

to sleep all winter

c)

to move during colder months

d)

to protect

e)

to stay alive

13.

Phagocytes kill pathogens by

a)

engulfing and digesting them

b)

producing antibodies

14.

Which of the following is NOT microorganism that can enter our body?

a)

Bacteria

b)

Virus

c)

Fungus

d)

Protozoa

e)

Earthworm

15.

The protection of the body from the pathogens is called ..............................

a)

body defense

b)

body response

c)

body rejection

d)

body requirement

16.

How many lines of defence in our body?

a)

1

b)

2

c)

3

d)

4

17.

The protection of the body against many type of pathogens is called ................................... defense.

a)

Non-specific

b)

Specific

18.

Which of the following is involved in the second line of defence?

a)

White blood cell

b)

Skin

c)

Tears

d)

Hydrochloric acid in stomach

19.

Which of the following is a specific defense in the body?

a)

First line

b)

Second line

c)

Third line

20.

The production of antibody to destroy specific pathogens in the body is called .......................... defense.

a)

non-specific

b)

specific

21.

What are disease causing organisms?

a)

antibodies

b)

pathogens

c)

phagocytes

d)

vaccines

22.
What is a pathogen?
a)
A small group of viruses
b)
The name given to colds and flu's
c)
A microorganism that causes disease
d)
A microbes that cause infectious diseases 
23.
A vaccine contains...
a)
cow pox
b)
an inactive strain of the pathogen
c)
a small amount of the pathogen
d)
small pox
24.
Why is it important to complete a course of antibiotics?
a)
to prevent antibiotic resistance
b)
so you do not waste drugs
c)
because antibiotics are good for you
25.
When pollen enters some people’s bodies, their immune systems overreact, causing their eyes and the membranes in their noses to swell. This reaction of the immune system is best described as _____.
a)
an infection
b)
a germ
c)
an immunity
d)
an allergy
26.
What do white blood cells do?
a)
Seek out and kill all living tissue
b)
Seek out and kill pathogens
c)
Transport food around the body
d)
Repair cuts and injuries
27.
What is the body's most important nonspecific defense?
a)
passive immunity provided by mom.
b)
skin
c)
active immunity provided by vaccines.
d)
inflammatory response
28.
Which of the following is NOT a nonspecific defense?
a)
mucus
b)
sweat
c)
antibodies
d)
tears
29.
___________ are proteins that tag pathogens for immune cell destruction.
a)
Antigens
b)
Antibodies
c)
interferons
d)
histamines.
30.
A person who develops antibodies against the flu vaccine is generating
a)
cell-mediated immunity.
b)
active immunity
c)
passive immunity
31.
When someone has memory B cells for a certain pathogen that person is less likely to get that same disease a second time.
a)
True
b)
False, T cells
c)
False, medicine
d)
False, good genetics
32.
An immune response is triggered by a(an)
a)
antibiotic.
b)
antibody.
c)
antigen.
d)
histamine.
33.
A vaccine contains...
a)
cow pox
b)
an inactive strain of the pathogen
c)
a small amount of the pathogen
d)
small pox
34.
Newborns can acquire ____ immunity through breast milk.
a)
specific
b)
passive
c)
active
d)
innate
35.

Sars-Cov2 virus that lead to Covid19 disease is example of (i)___________ disease that transmitted through (ii)_________ transmission.

a)

(i) waterborne (ii) water

b)

(i) touch (ii) parasite

c)

(i) airborne (ii) droplet

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