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Viruses &
Viruses &
Bacteria
Bacteria
Chapter 17
Chapter 17
Biology 11
Biology 11
Presentation put together by Mandie
Presentation put together by Mandie
Lynn Walls
Lynn Walls
What are Viruses
A virus is a non-cellular particle made
up of genetic material and protein
that can invade living cells.
T4 Bacteriophage
T4 Bacteriophage
Herpes Virus
Herpes Virus
Escherichia Coli Bacterium
Escherichia Coli Bacterium
E. coli is a bacterium. That is a crude cell, it is not a virus
E. coli is a bacterium. That is a crude cell, it is not a virus
because viruses are protein containers with DNA cores or
because viruses are protein containers with DNA cores or
RNA cores.
RNA cores.
E. Coli and the
E. Coli and the
Bacteriophage
Bacteriophage
What it looks like in real life
What it looks like in real life
The Structure Of a Virus
The Structure Of a Virus
Viruses are composed
Viruses are composed
of a core of nucleic
of a core of nucleic
acid
acid
The Nucleic acid core
The Nucleic acid core
is surrounded by a
is surrounded by a
protein coat called a
protein coat called a
capsid
capsid
The Nucleic core is
The Nucleic core is
either made up of
either made up of
DNA or RNA but never
DNA or RNA but never
both
both
Cycle of Lytic and Lysogenic
Cycle of Lytic and Lysogenic
Vaccines
Vaccines
►
Viruses grown on chicken embryos are
Viruses grown on chicken embryos are
attenuated vaccines
attenuated vaccines
►
Another type of vaccine is made by heat
Another type of vaccine is made by heat
killing the virus
killing the virus
Retrovirus
Change DNA
into RNA.
Example of a
Retrovirus is
HIV
.
Viruses &
Viruses &
Bacteria
Bacteria
Chapter 17
Chapter 17
Biology 11
Biology. That is a crude cell, it is not a virus
because viruses are protein containers with DNA cores or
because viruses are protein containers with DNA cores or