Viruses Viruses
<ul><li>A  VIRUS  is a microscopic particle that gets inside a cell and often destroys the cell. </li></ul>Viruses are tin...
<ul><li>Like living things, viruses contain proteins and nucleic acids, but viruses do not act like living things. </li></...
Are viruses living things?
A virus  CAN   REPRODUCE  inside a cell that serves as a  HOST . A HOST is a living thing that a  virus  or  parasite  liv...
So viruses force the host´s cells to make viruses instead of healthy new cells. You need to remember that cells can produc...
 
- Viruses The Lytic Cycle
Classifying Viruses
Based on their Nucleic Acids: RNA Viruses DNA Viruses
1 chain  formed  by  nucleotides 1 helix 2 chains  formed  by  nucleotides 2 helix
Based on their SHAPE
CRYSTAL
CYLINDER
SPHERES
SPACECRAFT
NEW MICROSCOPY TECHNOLOGY
avian influenza RNA virus CYLINDER
CYLINDER Tobacco mosaic virus (RNA virus)
Hepatitis B virus  (DNA virus)  CRISTALS
Polio virus; RNA virus. CRISTALS
SPHERES HIV Virus (RNA virus)
SPHERES HIV infection
SPHERES HIV infection
Variola  virus,  the cause of  smallpox  (DNA virus) SPHERES
Influenza A virus  (RNA virus) SPHERES
T4 bacteriophage (DNA virus). SPACECRAFT
Bacteriophage (DNA virus)  SPACECRAFT
Upcoming SlideShare
Loading in …5
×

Viruses

1,370 views

Published on

Published in: Health & Medicine, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,370
On SlideShare
0
From Embeds
0
Number of Embeds
5
Actions
Shares
0
Downloads
34
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Viruses

  1. 1. Viruses Viruses
  2. 2. <ul><li>A VIRUS is a microscopic particle that gets inside a cell and often destroys the cell. </li></ul>Viruses are tiny, they are smaller than the smallest bacteria . Red blood cell 7500 nm
  3. 3. <ul><li>Like living things, viruses contain proteins and nucleic acids, but viruses do not act like living things. </li></ul><ul><li>Viruses do not grow, break down food, use oxygen, respond to stimuli, etc. </li></ul><ul><li>Viruses cannot function on their own. </li></ul>
  4. 4. Are viruses living things?
  5. 5. A virus CAN REPRODUCE inside a cell that serves as a HOST . A HOST is a living thing that a virus or parasite lives on or in.
  6. 6. So viruses force the host´s cells to make viruses instead of healthy new cells. You need to remember that cells can produce all their structures, so in certain way they are like tiny factories.
  7. 8. - Viruses The Lytic Cycle
  8. 9. Classifying Viruses
  9. 10. Based on their Nucleic Acids: RNA Viruses DNA Viruses
  10. 11. 1 chain formed by nucleotides 1 helix 2 chains formed by nucleotides 2 helix
  11. 12. Based on their SHAPE
  12. 13. CRYSTAL
  13. 14. CYLINDER
  14. 15. SPHERES
  15. 16. SPACECRAFT
  16. 17. NEW MICROSCOPY TECHNOLOGY
  17. 18. avian influenza RNA virus CYLINDER
  18. 19. CYLINDER Tobacco mosaic virus (RNA virus)
  19. 20. Hepatitis B virus (DNA virus) CRISTALS
  20. 21. Polio virus; RNA virus. CRISTALS
  21. 22. SPHERES HIV Virus (RNA virus)
  22. 23. SPHERES HIV infection
  23. 24. SPHERES HIV infection
  24. 25. Variola virus, the cause of smallpox (DNA virus) SPHERES
  25. 26. Influenza A virus (RNA virus) SPHERES
  26. 27. T4 bacteriophage (DNA virus). SPACECRAFT
  27. 28. Bacteriophage (DNA virus) SPACECRAFT

×