WorksheetsProkaryotes and Viruses
Total questions: 15
Worksheet time: 45mins
Name
Class
Date
1.
What do you call a cell without a nucleus?
a)
Eukaryote
b)
Prokaryote
2.
All bacteria are
a)
eukaryotic.
b)
prokaryotic.
c)
eukaryotic and multicellular.
d)
prokaryotic and unicellular.
3.
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.
4.
A protein coat surrounding a virus is called a
a)
prophage.
b)
virus.
c)
capsid.
d)
bacteria.
5.
Prokaryotes are unlike all other organisms in that their cells
a)
lack nuclei.
b)
have organelles.
c)
have cell walls.
d)
lack nucleic acids.
6.
What is the shape of bacillus bacteria?
a)
round
b)
spherical
c)
rod shaped
d)
corkscrew
7.
Prokaryotes reproduce asexually by
a)
binary fission.
b)
endospores.
c)
conjugation.
d)
mutation.
8.
The process of converting nitrogen into a form plants can use is known as nitrogen
a)
formation.
b)
ammonification.
c)
decomposition.
d)
fixation.
9.
Disease-causing organisms are known as
a)
cocci.
b)
bacilli.
c)
pathogens.
d)
archaea.
10.
Viruses typically cause disease by
a)
releasing toxins.
b)
infecting and then destroying cells.
c)
causing mutations in the host cell DNA.
d)
destroying red blood cells.
11.
Which of the following can be helpful in treating bacterial diseases but NOT viral diseases?
a)
vaccines
b)
antibiotics
c)
antiviral drugs
d)
aspirin
12.
HIV is caused by a
a)
bacterium.
b)
virus.
13.
Viruses target specific cells. The HIV virus only infects
a)
skin cells.
b)
helper T cells.
c)
brain cells.
d)
stomach cells.
14.
Streptococcus is a bacterium that causes strep throat. What shape is this bacterium?
a)
spherical
b)
rod-shaped
c)
corkscrew
d)
spiral
15.
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.
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