? HAPPY FRIDAY ? Bellwork

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? HAPPY FRIDAY ?Bellwork
Bellwork Draw and Label the viruses above using
the following terms Capsid, DNA/RNA, Envelope.
THENBring up your bellwork so I can sign it.
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Happy TuesdayBellwork
RNA
DNA
CAPSID
RNA
CAPSID
CAPSID
ENVELOPE
Draw and Label the viruses above using the
following terms Capsid, DNA/RNA, Envelope.
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Essential Question How does a virus
reproduce?Standard describe viral reproduction
(B4C)
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Virus and Microorganisms NotecardsPre-AP
BiologyDue Thursday (2/12/15)

• Antibiotic
• Bacilli Shaped
• Bacterium
• Bacteriophage
• Binary Fission
• Cocci Shaped
• Capsid
• Conjugation
• Gram Staining
• Host
• Human Immunodeficiency Virus (HIV)
• Immunization
• Influenza
• Lysogenic Cycle
• Lytic Cycle
• Lyse
• Microorganism
• Parasite

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G. Vaccines 1. Viral diseases cannot be treated
with antibiotics. 2. Vaccines are the best way
to protect against viruses a) A vaccine is a
dead or weakened version of a virus that is
injected into a person to stimulate the
immune system. b) Vaccines provide
protection only if they are used before an
infection begins.
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When a virus invades
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D. Most viruses are not harmful to humans. 1. A
pathogen is a disease-causing agent. 2. Viruses
cause disease by disrupting the bodys normal
equilibrium. 3. Viruses attack and destroy
certain cells in the body, causing the symptoms
of the disease.
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H. Viral Reproduction 1. Once viral genes are
inside the host cell, two processes may occur
the lytic cycle or the lysogenic cycle.
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Lytic Cyle
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a) Lytic Cycle1. Viral genes are inserted into a
host cell and take control of the cell2. After
more viruses are made, the host cell bursts and
is destroyed3. New viruses infect new host
cells
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Lytic Cycle
- Viruses
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b) Lysogenic Cycle 1. Virus makes its DNA a
part of the host cells DNA (integrates) 2.
Viruss genetic information (DNA or RNA)
replicates with the host cells DNA.
3. The DNA remains dormant in the host cell.
4. Viruss DNA activates and switches back to
the lytic cycle.
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Lysogenic Cycle

• Hidden viruses hide for a while inside host
  cells before becoming active
• Steps to the Lysogenic Cycle
• Attach to cell
• Inject DNA/RNA
• Integrate DNA/RNA into cell
• Wait
• Remove DNA/RNA
• Become active (lytic cycle)

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Lysogenic Cycle
- Viruses
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DRAW THIS!!!
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• Since viruses can transport DNA and RNA into
  cells, scientists are exploring Gene Therapy
• In Gene Therapy, viral genetic material is
  replaced with new DNA
• In time, this could be used to cure genetic
  diseases. Currently we have no cure for these
  types of illnesses

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c) Viral diseases result in cell death
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DRAW THIS!!!
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Sage and Scribe Cycle Steps

• Get into partnersdecide who is partner A and who
  is partner B.
• Partner A Describe the steps for the Lytic
  cycle.
• Partner B Draw each step.
• After a few minutes, we will switch to the
  Lysogenic Cycle and you will switch roles.

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Retroviruses

• A coloring assignment read to give you the
  color key and answer ALL of the questions
  provided in the handout.