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WorksheetsArchaea, Bacteria and Viruses
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Prokaryotes are organisms that ...
a)
Have a nucleus
b)
usually multi-celled.
c)
both of these
d)
none of these.
2.
Almost all archaea have cell walls.
a)
true
b)
false
3.
What type of organism can be found in extreme environments such as hot springs?
a)
viruses
b)
archaea
c)
eukaryotes
d)
None of these
4.
How does a virus use a host to reproduce?
a)
The virus only uses a host cell for shelter; it does not use a host cell to reproduce.
b)
The host cell only provides the virus with the food it needs to reproduce on its own.
c)
The virus can replicate its own genetic material, but it uses the host for the process of conjugation.
d)
The host cell provides the virus with resources and shelter; its proteins replicate the genetic material of the virus.
5.
How does the process of binary fission work in the asexual reproduction of bacteria?
a)
Two cells join to become one larger cell.
b)
One cell splits into two cells with identical DNA.
c)
DNA material from the environment is added to the cell.
d)
Bacteria can only reproduce via sexual reproduction, not asexual reproduction.
6.
The shape of bacteria help them ....
a)
move
b)
eat
c)
protect themselves
d)
all of the above
7.
Bacteria that are producers ....
a)
make their own food.
b)
feed on other organisms
c)
feed on dead organisms
d)
none of these
8.
Bacteria that are consumers ....
a)
make their own food.
b)
feed on other organisms
c)
feed on dead organisms
d)
none of these
9.
Bacteria that are decomposers ....
a)
make their own food.
b)
feed on other organisms
c)
feed on dead organisms
d)
none of these
10.
Bacteria can form ________ to protect itself from harsh conditions.
a)
endospores
b)
armor
c)
spores
d)
mushrooms
11.
A virus is made of
a)
nucleic acid
b)
protein coat
c)
neither of these
d)
both of these
12.
A plasmid is
a)
A type of bacteria
b)
a type of archaea
c)
A small ring of DNA
d)
A virus
13.
The cycle of virus reproduction is called
a)
lilac cycle
b)
lytic cycle
c)
lysis
d)
cell cycle
14.
Most prokaryotes are
a)
bacteria
b)
single celled
c)
neither of these
d)
both of these
15.
Scientists study viruses so that vaccines can be made. A vaccine ...
a)
is a cure.
b)
helps build the body's antibodies.
c)
both of these
d)
none of these.
16.
Lysis is _______________________.
a)
when the cell hosting a virus bursts.
b)
when a virus injects a host cell with its DNA.
c)
when the viral DNA is inactive.
17.
Viruses are said to be "on the edge of living" because viruses ____________________.
a)
have most of the characteristics of living things.
b)
are alive but cannot be killed.
c)
immitate life by taking over host cells.
d)
are bacteria.
18.
Transformation occurs when ________________.
a)
None of these.
b)
a virus injects DNA into the bacterium.
c)
a plasmid is transferred from one bacteria to another.
d)
bacteria take up DNA from the environment.
19.
Transduction occurs when ________________.
a)
None of these.
b)
a virus injects DNA into the bacterium.
c)
a plasmid is transferred from one bacteria to another.
d)
bacteria take up DNA from the environment.
20.
Conjugation occurs when ________________.
a)
None of these.
b)
a virus injects DNA into the bacterium.
c)
a plasmid is transferred from one bacteria to another.
d)
bacteria take up DNA from the environment.
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