Aim: What were the first organisms to appear on Earth? HW # 12 read chapter 19 Pg.493 q.#40 due thurs.
VIRUSES. Virus- a tiny, nonliving particle that enters and then reproduces inside a living cell Characteristics of viruses: Not cells Do not use energy.
Pathology - the scientific study of the nature of disease and its causes A PATHOGEN is any disease causing agent. Quick Exercise: How many diseases can.
Viruses – Cellular Pirates Adenovirus showing Varicella zoster virus icosahedral shape causes chickenpox Chicken Pox – contains an envelope – membrane.
1 Chap 10 Malicious Software. 2 Viruses and ”Malicious Programs ” Computer “Viruses” and related programs have the ability to replicate themselves on.
Viruses Viruses are pathogens that attack cells from the inside. They hijack your own DNA and use it against you. A virus cannot be treated with antibiotics,
SALWA HASSAN TEAMA M.D. Influenza (The flu) Ain Shams University.
