Viruses
- Viruses: Non-living particles cuasing disease- No nuclues, cell membrane and other organells.
Q: since there is no nuclues, how do viruese multiply? (you need a nuclues in order for cells to multiply)
A: they need host cells (See Figure 15, on Page, 55)
Active Viruses: "Killing viruses".
They multiply causing host cells to die
Latent Viruses: "Sleeping Viruses"
They wait, then many years after, at certain conditions, they become active.
How do viruses affect organisms
1. Viruses attack animals, fungi, protists, and all prokaryotes
2 "lock and key": most of viruses only attack one specific type of cell because the viruse and the place where it attaches must fit together
Science Test: October 20th, Tuesday
Homework : Page 62. Questions 1-18. Due: Monday!
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