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| Bacteria of Turberculosis |
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Bacteria of Blood Poisoning Arrow: Streptococci |
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Bacteria of Food Poisoning |
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Bacteria of Apple Fire Blight A: a thick mass of the bacteria that causes this disease B: a single one of the bacteria |
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Bacteria of Potato Ring Rot A: Healthy potato cells w/ starch grains inside B: some of the bacteria that cause the potato ringrot C: completely rotted cell |
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What are two of the best places for bacteria to grow ? |
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| Most Bacteria need ? , ? , ? place to grow and multiply. |
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Bacteria which produce diseases are called what ? |
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The bacteria which live in a high concentration of oxygen are called what ? While those in a low concentration of oxygen are called what ? |
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Most bacteria are ? and ? THerefore, they need a host organism on which they may feed and grow. A few bacteria have the ability to make their own food by sythesizing sugar from raw materials. |
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| saprophytes and parasites |
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Bacteria are killed by what ? Name 6 |
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1. direct sunlight 2. extreme heat or cold 3. too much oxygen 4. certain chemicals 5. dryness 6. various drugs |
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| Everyone comes in contact with harmful bacteria everyday. We get sick when conditions are right for bacterial growth and there is a high concentration of bacteria. When bacteria invade the body tissues, the condition is called what ? Harmful bacteria produce poisons called what? which destroy body tissues. |
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What are the three types of bacteria called and their shapes ? |
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1. Bacilla - rod shaped 2. Coccil - round shaped 3. Spirilla - spiral shaped |
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What are the three natural lines of defense against diseases in the body and the extra 4th one ? |
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1. Skin, tears, stomach acid and mucous membranes 2. White corpuscles and fever (WhiteBlood Cells) 3. Antibodies |
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how many americans suffer from bacterial food poisoning ? |
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| an estimated 5 million Americans |
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What are some of the more publicized accounts between 1985and 1986 ? |
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Salmonellosis botulism Listeriosis |
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| Diseases trasmitted by foods are from four major agents : |
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1. chemicals 2. bacteria 3. parasites 4. viruses |
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When does foodborne intoxication occur ? |
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with the ingestion of toxins formed by certain microorganisms such as bacteria, molds, and algae which can grow in food |
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| What is the most common foodborne intoxication ? |
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| What causes gastroenteritis ? |
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| what is the most severe of all bacterial foodborne illnesses ? |
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What foods are implicated in a majority of botulism cases ? |
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| canned vegtables, fish, home canned fruit, and condiments |
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| Salmonellae accounts for more than ? percent of all cases of foodborne diseases in the united states. |
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WHat are the foods most frequently associated with salmonellae ? |
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meat and poultry and milk |
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What are the two most important ways to prevent foodborne illnesses ? |
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1. practice hygiene 2. prepare food fully |
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Enterotoxigenic Escherichia coli bastroenteritis, a common foodborne illness, is known worldwide as travelers ... ? |
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how much does foodborne illnesses cost our country every year ? |
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| prevention of foodborne illnesses is a public health problem shared by : |
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1. regulatory agencies 2. food inspectors 3. consumers of food |
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| much foodborne illness results from faulty : |
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1. poor personal hygiene 2. faulty sanitation |
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| rocky mountain spotted fever |
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ribosome DNA cell membrane - brown peptidoglycan - red cell wall - purple outer membrane Pili flagellum |
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INTERNAL: Procaryotic - 1? Eucaryotic - 2? |
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1. lack cell nucleus 2. has a cell nucleus |
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CELL SIZE pro - 1 ? euc - 2? |
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1. 1-5 microns 2. 10-100 microns |
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CHROMOSOMES pro - 1 euc - 2 |
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1. single circular piece 2. linear piece (straight) |
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REPRODUCTION pro - 1 euc - 2 |
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1. binary fission 2. mitosis |
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1. simple structure 2. complex structure |
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7. Metabolic Many Few
Processes Processes
Both Aerobic Mostly
& Anaerobic Aerobic
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bacteria can live where ? |
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| in almost any environment |
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Mostly heterotrophic- use food produced by other organisms
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• A bacteria that feeds on dead or decaying organic matter (cow) is called a what ? |
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| • ? = a saprophyte is and example of this |
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Reproduction
• Most reproduce very rapidly- ? how long ?
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Reproduction
• ? - Binary fission (Split in 2 Longitudeinally)
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| • ? - Conjugation (DNA Exchange) |
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BACTERIA DIES ?? howw what does the body do ? an antibody is a what ? |
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Inhibitors
• 1. Heat- Over 100 degrees (Pasteurization)
• 2. Cold- Below 80 Degrees
• 3. Predation- Something eating it
• 4. Lack of Food
• Body Temperature = 98.6 = IDEAL
• Fevers = to find homeostasis
• An antibody is an inhibitor
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How Bacteria Affect Humans (Good)
4 things ? |
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• Decomposer
• Nitrogen Fixing
• Manufacture food
• Aides in digestion |
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How Bacteria Affect Humans (Bad)
2 things ?
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• Cause disease
• Contaminate Food |
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Controlling Bacteria
3things ? |
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• 1. Sanitation
• 2. Vaccination
• 3. Antibiotics : 1928 Alexander Fleming Discovers Penicillin (British Bacteriologist)
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| 1928 who ? Discovers Penicillin (British Bacteriologist) |
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o On December 25 you contracted a bacterial infection. You went to the doctor an she gave you a 10 day prescription of antibiotics. On January 24th you have another bacterial infection.
o Question : Why should you not use the same antibiotic |
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o REAL ANSWER :
• 1. You usually are given a antibiotic for at least 10 days. USE ALL OF THEM.
• You shouldn’t use the same antibiotic, because it might cause harm to your body. Different bacteria require different antibiotics.
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