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