?Kingdom for virus? (Prokaryota

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?Kingdom for virus? (Prokaryota Monera)

• Virus Ch 18.1
• Prokaryotes no membrane bound organelles (no
  nucleus or mitochondria)

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Warts are a skin virus!
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Virus structure

• Protein Coat
• DNA or RNA for replication
• Adsorb-tion site
• Host specific

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Are viruses living or non-living?

• Nonliving
• Not cells
• Few of lifes criteria
• No respiration
• No growth
• No development
• Can be crystalline, dormant

• Living
• Replicate (with host)
• Contain DNA,RNA
• Contain protein coat

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4..Bacteriophage

• Bacteria eating virus
• Virus uses the bacteria as a host
• For Viral replication

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Plant peach virus

• 5.Virus can infect
• Plants
• Animals
• Bacteria

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Herpes mouth virus
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Chicken Pox Polio Virus
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Rabies virus Hepatitis B (Liver)
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Cow pox vaccination 1749

• Acquired Immunization
• Artificial injection of a small amount of virus
• Bodys immune response makes antibodies

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Lytic Cycle (Replication) of a Virus - AVIRAL
3. Replication of Viral DNA

1. Adsorption of virus onto the host

5.Lysis of Host cell Membrane release Of
virus
4. Assembly of protein coat
2. Insertion of Virus DNA into host cell
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Viral Replication
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HIV virus structure
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HIV Virus
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HIV virus infects T-cells

• HIV virus Weakens the immune system
• AIDS patients die of common diseases when T
  cell (WBC) count falls

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AIDS break down of the immune system death
due to common diseases versus death by AIDS virus
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Transduction
Viral DNA becomes inserted Into the Bacteria DNA
(1/100,000)
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Genetic Engineering of Insulin
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Restriction EnzymesMade by some Bacteria