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Infectious Agents

Total questions: 38

Worksheet time: 19mins

Name
Class
Date
1.
Any living or nonliving thing that causes infectious diseases. 
a)
pathogen
b)
virus
c)
bacteria
d)
parasite
2.
A particle that has its own genetic material but depends on other living things to reproduce.
a)
parasite
b)
virus
c)
bacteria
d)
fungi
3.
Unicellular organisms that have a cell wall and reproduce by mitosis or binary fission.
a)
fungi
b)
virus
c)
bacteria
d)
parasite
4.
A kingdom made up of Chlorophyll-lacking, eukaryotes that reproduce by using spores and get nutrients by breaking down dead matter in their ecosystem
a)
Virus
b)
bacteria
c)
fungi
d)
parasite
5.
An organism that lives on and feeds on another organism, called a host.
a)
Virus
b)
bacteria
c)
fungi
d)
parasite
6.

The mucus in your nose and the acid in your stomach are both front-line defenses against pathogens. Which of the following is also a front-line defense?

a)

Your antibodies

b)

Your leukocytes

c)

Your T-cells

d)

Your skin

7.
Any behavior that puts an organism at risk to catch a communicable disease
a)
unhealthy/risky behavior
b)
communicable
c)
environmental factor
d)
non-communicable
8.

What is the main function of antibodies?

a)

"Remembering" the characteristics of germs that have invaded your body in the past

b)

Creating new white blood cells

c)

Binding themselves to invading antigens

d)

Signaling your immune system that antigens have invaded your body.

9.
A pathogen or illness that is able to be passed from host to host.
a)
unhealthy/risky behavior
b)
communicable
c)
environmental factor
d)
non-communicable
10.
Any living or nonliving factor that influences the quality of life for living organisms
a)
unhealthy/risky behavior
b)
communicable
c)
environmental factor
d)
non-communicable
11.
Any disease that cannot be passed from host to host.
a)
unhealthy/risky behavior
b)
communicable
c)
environmental factor
d)
non-communicable
12.
Viruses are...
a)
prokaryotic
b)
eukaryotic
c)
non-living
d)
endospores
13.
What percentage of bacteria are harmful?
a)
99%
b)
About 50%
c)
about 10%
d)
less than 1%
14.
Viruses...
a)
use a host to reproduce
b)
breath oxygen
c)
grow
d)
eat food
15.
Vectors...
a)
are killed by the disease they carry
b)
only affect animals
c)
transfer diseases without being infected themselves
d)
can only be found in tropic and subtropic regions of the world
16.
Which of the following is caused by a fungi?
a)
common cold
b)
athletes foot
c)
strep throat
d)
amoeba
17.

What is the best way to prevent the spread of all diseases?

a)

vaccines

b)

antibiotics

c)

cover your mouth when coughing

d)

wash your hands

18.
Who is credited with finding penicillin?
a)
Jonas Salk
b)
Robert Koch
c)
Edward Jenner
d)
Alexander Flemming
19.

What is one major difference between viruses and bacteria?

a)

Viruses can make you sick; bacteria cannot

b)

Bacteria can be treated with antibiotics; viruses cannot

c)

Viruses can be trapped by mucus or neutralized by stomach acids; bacteria cannot

d)

Bacteria can cause infections; viruses cannot

20.
Who is credited with creating the vaccine for smallpox?
a)
Jonas Salk
b)
Robert Koch
c)
Edward Jenner
d)
Alexander Flemming
21.

What would happen to a virus if it couldn't find a host cell to invade?

a)

It wouldn't be able to travel through the air

b)

It wouldn't be able to multiply

c)

Its genetic information would wither away

d)

It would not be able to exist

22.
Bacteria are used to make which of the following foods?
a)
yogurt
b)
bread
c)
pickles
d)
all of these are correct
23.
Which of these statements is true?
a)
All bacteria are harmful.
b)
All bacteria help people.
c)
Some bacteria are helpful and some are harmful.
d)
Bacteria are not necessary for life on Earth.
24.
What is one way a pathogen can enter the body?
a)
Nose
b)
Mouth
c)
Broken Skin
d)
All of the Aove
25.
An example of passing disease Person to Person would be
a)
Touching a door knob
b)
Eating spoiled food
c)
Sharing a drinking container
d)
Touching infected animal
26.
Which of the following is a substance usually prepared from killed or weaken pathogens?
a)
White blood Cells
b)
Antibodies
c)
Lymph
d)
Vaccines
27.

How does the HIV virus attack?

a)

It kills the antibodies in your body

b)

It prevents your body from making new antibodies

c)

It prevents your body from "remembering" the characteristics of diseases you have already had

d)

It attacks white blood cells so your body can't fight infection

28.

Which of the following is a true statement about viruses?

a)

They are only spread through person-to person contact

b)

They can be spread in a number of different ways

c)

All of them are harmful to humans

d)

They can only be spread through exposure to animal waste

29.

What might happen if your immune system doesn't recognize a germ that's invaded your body? Choose the best answer.

a)

The germ will have time to multiply and make you sick

b)

Your white blood cells will begin killing healthy cells instead

c)

Your antibodies will begin attacking each other

d)

Your body will stop producing white blood cells

30.
Can be cured using antibiotics
a)
virus
b)
bacteria
c)
parasite
31.
An organism that causes disease
a)
Pathogen
b)
Infectious Disease
c)
Phagocyte
d)
Antigen
32.

A disease that is NOT caused by a pathogen

a)

Vaccine

b)

Passive Immunity

c)

Vaccination

d)

Noninfectious disease

33.
What is a noninfectious disease?
a)
A disease that can spread
b)
A pathogen
c)
A disease that can't spread
d)
Rabies
34.
Needs host cell to reproduce.
a)
Virus
b)
Bacteria
c)
Fungus
d)
Protozoan
35.
You can catch a noninfectious disease from a classmate.
a)
True
b)
False
36.
A medicine that kill microorganism like  bacteria. 
a)
antibiotics
b)
pathogen
c)
virus
d)
bacteri
37.
Its is a living cell in which a virus reproduces. 
a)
plant
b)
cell
c)
host cell
d)
animal
38.
An organism that lives in or on another organism (its host) and benefits by deriving nutrients at the host's expense.
a)
bacteria
b)
virus
c)
pathogen
d)
parasite

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