THIS IS A VIRUS A Virus is not living- Nor is it considered dead It must have a host cell to reproduce and perform life functions A virus has either DNA or RNA, not both! Tail fibers are specific protein receptor, that is why some viruses can affect only humans, only plants, or only a certain type of animal or plant.

Viruses can come in many shapes and forms

ARE NOT TREATABLE WITH ANTIBIOTICS!!! VIRAL DISEASES ARE NOT TREATABLE WITH ANTIBIOTICS!!!

Herpes Virus An STD Can Affect all parts of your body. Incurable

Pox Viruses Pox viruses are a family of viruses which includes: Chicken Pox, Cow Pox, Small Pox, etc. Smallpox is a deadly disease causing terrible scars. It was wiped out by widespread vaccination several decades ago.

WARTS Blister-like bumps caused by viruses in the skin.

INFLUENZA (FLU) Th flu virus mutates so quickly that a new vaccine is required every year.

Human Immune Virus (HIV) Transmitted sexually and in blood products HIV attacks the Helper T cells of the immune system. You do not die from HIV, you die from other infections that lead to death. HIV destroys your immune system causing AIDS (Acquired Immune Deficiency Syndrome.

THIS IS A BACTERIUM (plural = bacteria)

ARE TREATABLE WITH ANTIBIOTICS!!! BACTERIAL DISEASES ARE TREATABLE WITH ANTIBIOTICS!!!

sSTREPTOCOCCUS Round bacteria that arrange themselves in strings (chains). Cause dangerous infections in humans such as: Strep throat, scarlet fever

DIPTHERIA Deadly bacterial infection that can be prevented by vaccination (DPT)

RHIZOBIUM Bacteria that live in soil that transform atmospheric nitrogen and turn it into useful nutrients (nitrates) for plants

LACTOBACILLUS Bacteria used to make yogurt and other dairy products.

E. Coli Bacteria found in the human intestines that produce vitamin D and aid in digestion.

BACTERIA VIRUSES Structure Reproduction Treatment Harm Benefits Prokaryotic cells with cell wall, ribosomes and a loop of DNA Protein coat, DNA or RNA, envelope Reproduction Asexual by binary fission Only inside a host cess using cell machinery Treatment Antibiotics. Some can be prevented by vaccines before exposure. Some can be prevented by vaccines before exposure. Harm Cause disease in plants and animals; spoil food. Invade specific cells of plants and animals; reproduce inside the cells and destroy cells. Benefits Produce food (yogurt); fix nitrogen in the soil,produce vitamin D in the large intestine; decomposers Used in research