Flashcards in Viruses Deck (11)
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1
Viruses
They are little more than a few dozen genes surrounded by a protein coat
Not a true cell
2
What can’t viruses do?
Grow, repair themselves, feed, or move on their own
3
Active viruses
Only when they make contact with host cell
4
Parasites
Viruses are parasites because they take over the host cell to make more copies of themselves
5
Lytic cycle
Viruses enter host cell and tricks it into making new virus particles
6
Lysogenic cycle
Viral genes enter host cell, but do not reproduce right away.
They insert themselves into host cell’s chromosomes.
7
Prophage
Viral genes
8
Viral diseases 1
1. Sexually transmitted infections
Human Immunodeficiency virus (HIV)
Herpes
Human Papilloma virus (genital warts)
9
Viral diseases 2
Other viral infections
Cold, flu, West Nile virus, rabies, yellow fever, Ebola, Hepatitis (A,B,C)
10
Viral infections 3
Some viruses linked to cancer
Human Papilloma virus (HPV) is leading cause of cervical cancer
Hepatitis is cause of liver cancer
11
