Transcript Virus Reading Guide2012

Virus Reading
Guide
How Active Viruses Multiply
Virus attaches
to the surface
of a living cell
How Active Viruses Multiply
Virus injects
genetic material
into cell
How Active Viruses Multiply
Cell produces
viral proteins and
genetic material
How Active Viruses Multiply
Viruses assemble
How Active Viruses Multiply
Cell bursts,
releasing viruses
How Hidden Viruses Multiply
Virus attaches
to the surface
of a living cell
How Hidden Viruses Multiply
Virus’s genetic
material becomes
part of the cell’s
genetic material.
How Hidden Viruses Multiply
Later, virus’s genetic
material becomes
active.
How Hidden Viruses Multiply
Cell produces viral
proteins and genetic
material; viruses are
assembled
How Hidden Viruses Multiply
Cell bursts,
releasing
viruses
1. Why do biologists consider
viruses to be nonliving?
1. Why do biologists consider
viruses to be nonliving?
Viruses are not cells
and do not have the
characteristics of
organisms.
2. True/ False.Viruses multiply the
same way as other organisms.
2. True/ False.Viruses multiply the
same way as other organisms.
False
3. Which is the name of a living thing
that provides energy for a virus or
an organism?
A.Parasite
B. Host
C.Bacteriophage
D.Particle
3. Which is the name of a living thing
that provides energy for a virus or
an organism?
B. Host
4.Viruses act like ____ because
they destroy the cells in which they
multiply.
4.Viruses act like ____ because
they destroy the cells in which they
multiply.
parasites
5. True/ False. Each virus can enter
only a few types of cells in a few
species.
5. True/ False. Each virus can enter
only a few types of cells in a few
species.
True
6. True/ False. All viruses have the
same shape.
6. True/ False. All viruses have the
same shape.
False
7. A virus that infects bacteria is
called a(n) _______.
7. A virus that infects bacteria is
called a(n) _______.
bacteriophage
8. True/ False.Viruses are much
smaller than bacteria.
8. True/ False.Viruses are much
smaller than bacteria.
True
9. Circle the letter of each sentence
that is true about viruses.
a.
b.
c.
d.
They are larger than cells.
They need to be inside a
living cell in order to
reproduce.
They contain genetic
material.
They are all round in shape.
9. Circle the letter of each sentence
that is true about viruses.
b. They need to be inside a
living cell in order to
reproduce.
c. They contain genetic material.
10. Label the two basic parts of a
virus in this diagram.
10. Label the two basic parts of a
virus in this diagram.
Protein Coat
10. Label the two basic parts of a
virus in this diagram.
Genetic material
Protein Coat
11. True/ False. Some viruses are
surrounded by an outer membrane
envelope.
11. True/ False. Some viruses are
surrounded by an outer membrane
envelope.
True
12. What are two functions of a
virus’s protein coat?
12. What are two functions of a
virus’s protein coat?
1. It
protects the virus.
2. It allows the virus to
attach to certain cells.
13. True/ False. The shape of the
proteins allow the virus’s coat to
attach to only certain cells in the
host.
13. True/ False. The shape of the
proteins allow the virus’s coat to
attach to only certain cells in the
host.
True