Transcript Viruses - Mrs. Hilton`s Crew

Viruses
Mrs. Hilton’s Class
Viruses
Directions:
Glue in the guided paper to your note book. Fill in the
blanks as you read!
Read Carefully as this will be turned in and graded on a
scale of 1-3.
1- You just filled in words, and made several spelling
mistakes. You did not complete any of the drawings.
2- You filled in some of the words correct and made only
a few spelling errors. You did some of the drawings.
3- you filled in all of the words correctly, and made no
spelling errors. You completed all of the drawings.
Viruses
1. Some scientists think viruses are living
things, and some do not.
2. They are much smaller than a cell and do
not have organelles.
3. In fact, a cell can hold over 500 viruses!
Viruses are so small scientists knew they
existed long before they could see them.
4. They could not be seen until the 1930s when
an electron microscope was invented by Ernst
Ruska.
Virus Structure
Genetic
Info
label the different parts
of a virus using the
picture
Purple line:
Protein Coat
Viruses
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1. Inside a virus is its genetic
information. This is the programming
a virus needs to reproduce itself.
2. The outside of a virus is a protein
coat that protects the genetic
information and helps it attach to cell
Viruses
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1.Viruses can only do one thing –
reproduce.
2. They must use a host cell to
reproduce.
3. A virus can only infect one cell. Its
receptors only fit one particular type of
cell, just like a key only fits one lock.
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Viruses
Virus attaches itself to a cell.
Inserts its genetic material.
The genetic material takes control over the
cell’s functions.
The cell begins making many copies of the
virus.
The cell bursts releasing the viruses into the
body.
The viruses each seek out a new cell.
Viruses - Your Immune System
1. Most viral diseases are contagious. They can
be passed from one person to
another.
2. Some are passed through the air by coughing
and sneezing.
3. Some are passed through body fluids like
blood.
4. Some are spread by direct contact like
shaking hands.
5. Your body has a defense system to protect
itself from viruses called an Immune
System.
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Viruses- Your
Immune System
*Your body has natural parts
that fight viruses!
Skin
White Blood Cells
Antibodies
T-Cells
Interferon
Viruses - Your
Immune System
You can slow the spread of viruses by:
*Washing your hands
*Covering your mouth and nose when you sneeze or
cough
*Avoiding direct contact with those that are sick
*Getting enough sleep
*Keeping your body healthy
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