WorksheetsMicrobes: Viruses and Bacteria
Total questions: 30
Worksheet time: 17mins
Name
Class
Date
1.
A person with AIDS is likely to develop infectious diseases because the virus that causes AIDS
a)
destroys cancerous cells
b)
damages the immune system
c)
increases the rate of antibody production
d)
increases the rate of microbe destruction
2.
What does invading the host cell enable the virus to do?
a)
increase its size
b)
synthesize needed oxygen
c)
obtain nutrients
d)
reproduce
3.
When a new viral infection appears in a population, scientists usually try to develop a vaccine against the virus. Which substances would most likely be contained in the new vaccine?
a)
live bacteria that ingest viruses
b)
white blood cells from an infected individual
c)
weakened viruses associated with the infection
d)
a variety of microbes that will attack the virus
4.
The diagram represents a cycle initiated when a virus (bacteriophage) infects a bacterial cell. Which nutritional relationship exists between the virus and the bacterial cell?
a)
parasitism
b)
mutualism
c)
commensalism
d)
saprophytism
5.
The substance being transferred into the bacterial cell in B is
a)
a nucleic acid
b)
a protein
c)
an enzyme
d)
a hormone
6.
Nodules on the roots of legumes contain
a)
nitrogen-fixing bacteria, which help produce nitrates
b)
denitrifying bacteria, which produce amino acids
c)
bacteria that release uric acid into the soil
d)
bacteria that produce protein for absorption by plants
7.
Bacteria of decay are important components of an ecosystem because they
a)
are involved in photosynthesis
b)
recycle organic matter
c)
absorb solar energy
d)
slow the spread of disease
8.
To what would the phrase "is not a cell but has the ability to reproduce within a living cell" best describe?
a)
an alga
b)
a yeast
c)
a bacterium
d)
a virus
9.
How could you describe the size of a virus?
a)
Smaller than bacteria
b)
Larger than a parasite
c)
About the size of a dime
d)
Smaller than a proton
10.
What does a virus have on the inside?
a)
DNA, but never RNA
b)
RNA but never DNA
c)
DNA or RNA
d)
neither DNA or RNA
11.
You can improve your recovery from illness by
a)
a. exercising
b)
b. limiting your sleep
c)
c. not seeing a doctor
d)
d. increasing fluids and rest
12.
Which is the BEST way to help prevent the flu virus from becoming a pandemic?
a)
sleeping 8 hours a night
b)
taking antibiotics
c)
getting a vaccination
d)
eating fruits and vegetables
13.
Which BEST compares bacteria and viruses?
a)
bacteria are smaller than viruses
b)
bacteria cause disease, but viruses do not
c)
bacteria are living organisms, but viruses are not
d)
bacteria have genetic material, but viruses do not
14.
Which is the most effective defense against the chicken pox virus?
a)
antibiotics
b)
diet
c)
exercise
d)
vaccine
15.
The human immunodeficiency virus (HIV) causes AIDS. The first know cases of AIDS were in Africa in the late 1950's. Since then, tens of millions of people have died from the disease, and tens of millions more people all over the world are infected. Which term best describes the disease AIDS?
a)
isolated cases
b)
outbreak
c)
epidemic
d)
pandemic
16.
Bacteria are prokaryotes which means they
a)
have a nucleus on their capsule
b)
do not contain a nucleus
c)
can live in environments with and without oxygen
17.
The outer covering of a bacteria cell is called the
a)
flagella
b)
cytoplasm
c)
cell wall
18.
Name this bacteria shape
a)
coccus
b)
spirillum
c)
bacillus
19.
Name this bacteria shape
a)
bacillus
b)
coccus
c)
spirillum
20.
Name this bacteria shape
a)
coccus
b)
bacillus
c)
spirillum
21.
Bacteria that help break down dead material in the environment are called
a)
vaccines
b)
decomposers
c)
oats
22.
True or False: Some types of bacteria eat and clean up oil spills
a)
True
b)
False
23.
A disease causing organism
a)
pathogen
b)
poison
c)
vaccine
24.
The flu is caused by
a)
bacteria
b)
virus
25.
Bacteria are only found in dirty places
a)
True
b)
False
26.
Bacteria can only be spread through coughing
a)
False
b)
True
27.
Live bacteria are found in milk, cheese and yogurt
a)
True
b)
False
28.
The name of a bacteria can be described by its shape
a)
False
b)
True
29.
How do bacteria move?
a)
flagella
b)
cilia
c)
they don't
30.
Process that sterilizes bacteria so it is safe to eat
a)
pasteurization
b)
boiling
c)
juliette
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