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WorksheetsChapter 20 Viruses and Bacteria
Total questions: 15
Worksheet time: 28mins
Name
Class
Date
1.
All bacteria are
a)
eukaryotic.
b)
prokaryotic.
c)
eukaryotic and multicellular.
d)
prokaryotic and unicellular.
2.
Particles made up of proteins, nucleic acids, and sometimes lipids that can reproduce only by infecting living cells are called
a)
bacteria.
b)
capsids.
c)
prophages.
d)
viruses.
3.
Prokaryotes reproduce asexually by
a)
binary fission.
b)
endospores.
c)
conjugation.
d)
mutation.
4.
The process of converting nitrogen into a form plants can use is known as nitrogen
a)
formation.
b)
ammonification.
c)
decomposition.
d)
fixation.
5.
Disease-causing organisms are known as
a)
cocci.
b)
bacilli.
c)
pathogens.
d)
archaea.
6.
HIV is caused by a
a)
bacterium.
b)
virus.
7.
Which of the following can be helpful in treating bacterial diseases but NOT viral diseases?
a)
vaccines
b)
antibiotics
c)
antiviral drugs
d)
aspirin
8.
A preparation of weakened or killed pathogens or inactivated toxins that are injected into the body to prevent certain diseases is called a/an
a)
antibiotic.
b)
antiviral drug.
c)
vaccine.
d)
pathogen.
9.
What number is pointing to the cell membrane?
a)
1
b)
2
c)
3
d)
4
10.
What number is pointing to the flagella?
a)
1
b)
5
c)
6
d)
7
11.
What number is pointing to the ribosome?
a)
4
b)
5
c)
6
d)
7
12.
Reasons that viruses are considered to be nonliving is because
a)
They are not cellular
b)
They cannot reproduce on their own
c)
They cannot make proteins
d)
all of the above
13.
Plants and animal cells are examples of ___ cells
a)
prokaryotic cells
b)
eukaryotic cells
c)
Viruses
d)
Ribosomes
14.
Chromosomes in bacteria are
a)
long thin strands
b)
located in the nucleus
c)
located in the cell wall
d)
not located in a nucleus
15.
Bacteria that help break down dead material in the environment are called
a)
vaccines
b)
decomposers
c)
oats
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