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Viruses
Test Description: Test on virus vocabulary
Instructions: Answer all questions to get your test result.
1) An infectious particle made of a strand of nucleic acid surrounded by protein is a
A
prion
B
virus
C
viroid
D
bacteria
2) Any organism or particle that can cause an infectious disease is called a
A
virus
B
viroid
C
bacteria
D
pathogen
3) What part of a virus determines which host the virus infects?
A
plasma membrane
B
nucleic acids
C
receptor molecules
D
surface proteins
4) Viruses that infect bacteria are called
A
helical viruses
B
prophages.
C
polyhedral virus
D
bacteriophages.
5) In which of the following types of infection will the infected host cell burst?
A
lytic infection
B
lysogenic infection
C
provirus infection
D
prophage infection
6) The protein shell of a virus is called a
A
envelope
B
spike
C
tail sheath
D
capsid.
7) The main reason that viruses are not considered to be living things is because —
A
they do not contain a nucleus
B
they are not affected by antibiotics
C
they do not contain any nucleic acids
D
they cannot reproduce on their own
8) When HIV causes a lysogenic infection, it can remain dormant for years. When it becomes a lytic infection, it
A
can no longer cause AIDS.
B
mutates infrequently
C
causes no symptoms
D
destroys T- cells of the immune system
9) HIV is considered a retrovirus because it
A
returns many times
B
uses RNA to make DNA
C
has a high mutation rate
D
attacks the white blood cells.
10) A substance that stimulates the body's immune response against future invasion by microbes is a
A
receptor
B
mutation
C
retrovirus.
D
vaccine
*select an answer for all questions
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