BACTERIA http://www.factslides.com/s-Bacteria

Bacteria: the good, the bad, and the ugly Some bacteria are pathogens (disease causing) Breaking down body tissues Others are beneficial Aiding digestion; fixing nitrogen

Diseases Caused by Bacteria Cholera Typhoid Fever Botulism Strep Throat Tuberculosis Bubonic plague Dental Cavities Anthrax Lyme Disease E. Coli Diphtheria Salmonella

Suspect: Mycobacterium tuberculosis Disease: Tuberculosis (TB) is a potentially serious infectious disease that mainly affects your lungs. Symptoms may include: Chronic coughing Coughing up blood Difficulty breathing Fever, chills, night sweats, fatigues, weight loss

Suspect: Clostridium tetani Disease: Tetanus  Also known as lockjaw, is an infection characterized by muscle spasms Symptoms: muscle spasms, muscle rigidity, facial muscle spasms, or stiff muscles

Suspect: Corynebacterium diphtheriae Disease: Diphtheria Upper respiratory tract illness Symptoms: difficulty swallowing, soreness, rashes or ulcers in skin, impaired voice, shortness of breath, fever, chills

Suspect: Vibrio cholerae Disease: Cholera A bacterial disease causing severe diarrhea and dehydration, usually spread in water Symptoms: severe diarrhea, severe vomiting, dehydration, pain in rectum or abdomen

How do we prevent & treat bacterial infections? Proper food handling (can help PREVENT an infection from food-borne illness) Keep food in cool, dry location Cook properly Wash hands thoroughly when handling raw meat

How do we prevent & treat bacterial infections? Vaccines can help PREVENT an infection Tuberculosis Diphtheria Tetanus Pertussis

How do we prevent & treat bacterial infections? Your body has an immune system response just like during a viral infection

How do we prevent & treat bacterial infections? Antibiotics can help TREAT an existing infection Penicillin Azithromycin Ciprofloxacin Amoxicillin

How do antibiotics work? Antibiotics only work on bacteria (NOT viruses) They may kill or inhibit the growth of bacteria

If we made drugs (antibiotics) to kill bacteria, why are there still so many disease causing bacteria?

Antibiotic Resistance Video: https://www.youtube.com/watch?v=znnp-Ivj2ek Bacteria are continually adapting to develop ways of not being killed by antibiotics through mutation. Antibiotic resistance arises in our bodies’ bacteria, or in animals, due to the overuse and misuse of antibiotics.

MRSA Methicillin Resistance Staphylococcus aureus Methicillin-resistant Staphylococcus aureus is a bacterium responsible for several difficult-to-treat infections in humans. Source: Mayo clinic

MRSA

Some bacteria are helpful!

What is Nitrogen Fixation? Bacteria that live in the soil help “fix” nitrogen- making it easier to absorb by plants. These bacteria change N2 (non-usable form) into NH4+ (ammonium) which is usable to plants What is Nitrogen Fixation? https://www.youtube.com/watch?v=4NKGS4bj7cc

Bacteria Komodo Dragon – Bacteria on it’s tongue http://video.nationalgeographic.com/video/weirdest-komodo-dragon?source=searchvideo Flashlight fish lit up because of bacteria https://www.youtube.com/watch?v=Jk_EmI4te20 Monsters Inside Me – Flesh Eating Bacteria https://www.youtube.com/watch?v=ypmsjqytMpA Monsters Inside Me – Lung Infection Bacteria https://www.youtube.com/watch?v=OsxZT-55K4k Monsters Inside Me – Chromobacterium https://www.youtube.com/watch?v=2Lr__MpVhNA

Let’s put it all together! Viruses, Protists, Bacteria