Slide 1Aim: What were the first organisms to appear on Earth? HW # 12 read chapter 19 Pg.493 q.#40 due thurs Slide 2 Early Earth was hot; atmosphere contained poisonous gases…

Slide 1VIRUSES Slide 2 Virus- a tiny, nonliving particle that enters and then reproduces inside a living cell Characteristics of viruses: Not cells Do not use energy Do not…

Slide 1Pathology - the scientific study of the nature of disease and its causes A PATHOGEN is any disease causing agent. Quick Exercise: How many diseases can you think of?…

Slide 1 Viruses – Cellular Pirates Adenovirus showing Varicella zoster virus icosahedral shape causes chickenpox Chicken Pox – contains an envelope – membrane taken…

Slide 1 SALWA HASSAN TEAMA M.D. Influenza (The flu) Ain Shams University Slide 2 Contents  Influenza (The flu)  Classification  Influenza A virus  Influenza B…

Slide 1 1 Chap 10 Malicious Software Slide 2 2 Viruses and ”Malicious Programs ” Computer “Viruses” and related programs have the ability to replicate themselves…

Slide 1 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, it can…