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Kelsee Rae Delorme

on 1 August 2013

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Transcript of Diseases

Bacteria is helpful to the environment in many ways. Life as we know it would not exist without bacteria because it decomposes waste and dead organisms. Bacteria ensures that the cycle of chemical exchange is continuous between organisms and their environment.
The method of reproduction.

Bacterium is a completely self-contained and self-reproducing unit. When the time is right, bacterium will split its DNA and RNA genetic material in two. Separate cell walls will build up around these two new bacteria, and this process will continue until thousands or millions of bacteria have formed. This is how strains of bacteria survive in almost every environment on Earth, including non-living surfaces like rocks or plastic.

A virus, on the other hand, cannot reproduce without a living host. A virus may lie dormant for thousands of years before finally coming into contact with a suitable host. Once it enters the body of a host, a virus uses leg-like appendages to clamp onto a cell and a spike or chemical coating to penetrate the cell wall.

Once inside a living cell, a virus replaces the cell's original DNA or RNA commands with its own genetic instructions. Those instructions are usually to make as many copies of the virus as possible. Once the individual cell has outlived its usefulness, it explodes and sends out thousands of copies of the original virus to other unsuspecting cells.
Chicken Pox (viral)
Cholera (bacterial)
What is cholera?
Cholera is a severe bacterial infection caused by the bacterium Vibrio cholerae, which primarily affects the small intestine.
How is it transmitted?

Cholera is transmitted by drinking water or eating food contaminated with the cholera bacterium, "Vibrio cholerae. "

Raw or undercooked seafood may be another way of getting Cholera
Symptoms include:
Extreme diarrhea
Severe vomiting (which can lead to dehydration)
What are chicken pox?
Chicken pox is a highly contagious illness caused by primary infection with varicella zoster virus (VZV). A skin rash is the main symtom;on the body and head. it becomes itchy and leaves raw pockmarks which mostly heal without scarring.
Spread by:
Air: Coughing
& by touching a blistered pox
Symptoms include:
having the rashes... & some kids have a fever, abdominal pain, sore throat, headache, or a vague sick feeling
Viruses contain some of the structures and exhibit some of the activities that are common to organic life, but they are missing many of the others. In general, viruses are entirely composed of a single strand of genetic information encased within a protein capsule. Viruses lack most of the internal structure and machinery which characterize 'life'
Helpful Bacteria;

Escherichia coli, AKA (E. coli), which help digest food

the bacteria found in cheese, sour cream, and yogurt.
A virus (from the Latin virus meaning toxin or poison) is a small infectious agent that can replicate only inside the living cells of other organisms.
The Lytic Cycle
The Lysogenic Cycle
Full transcript