Micro Test 25.2

Question 1

What is the difference between an infection and an intoxication

Answer 1

An infection causes fever while intoxication doesn’t

Question 2

What is the main bacteria that causes Staphylococcal enterotoxicosis

Answer 2

Staph. aureus

Question 3

Explain the process in which someone gets Staphylococcal enterotoxicosis

Answer 3

Once a protein containing food is cooked, most bacteria that compete with Staph are killed
A person then touches the food and contaminates it
If food is left out at room temperature, the staph (or infecting bacteria) releases a toxin
The toxin is ingested
A few hours later, symptoms of intoxication poisoning start to appear
You usually need about 1 million bacteria per gram to produce enough toxin to cause problems; cream pies and ham are food in which Staph. Aureus thrive because the competition bacteria are killed off when these are prepared.
Any food prepared in advance and not kept chilled are a potential source of staph. Food poisoning
The toxin can survive up to 30 mins of boiling

Question 4

Name the 3 shapes of bacteria that we have covered

Answer 4

Cocci (round) , Bacillus (rod), Vibrio (spiral)

Question 5

Where is non cholera vibrio found

Answer 5

Coastal salt waters around the US and Hawaii

Question 6

What are the 3 travelers diseases we have covered

Answer 6

S. sonnei
E. coli
idk

Question 7

What are the two types of E coli

Answer 7

Travelers disease and Shiga Toxin - producing Escherichia coil

Question 8

What gastroenteritis bacterial infection causes Typhoid fever

Answer 8

Salmonella Typhi

Question 9

What condition that we studied can you get from reptiles

Answer 9

Nontyphoidal Salmonella

Question 10

What are fimbriae and what bacteria is it found on

Answer 10

Fimbriae produce toxins that cause gastrointestinal problems

Question 11

What two conditions is the Shiga toxin released on

Answer 11

Shigellosis (Bacillary Dysentery) and E. coli

Question 12

What condition that we studied is associated with rice water stools and what are rice water stools made out of

Answer 12

Cholera
Watery stools which contain masses of intestinal mucus and epithelial cells

Question 13

How does diarrhea kill someone

Answer 13

Dehydration and lost of electrolytes

Question 14

How can you break down the toxin in Staphylococcal enterotoxicosis

Answer 14

Boil the food for 30+ minutes

Question 15

Does non cholera vibrio cause rice water stools

Answer 15

yep

Question 16

What is the difference between the way that non typhoidal Salmonella and Typhoid fever

Answer 16

NTS is milder than Typhoid fever

Question 17

How my times a day does someone have diarrhea when they have dysentery

Answer 17

20 times a day

Question 18

How much water does someone poop out when they have cholera

Answer 18

3-5 gallons of water

Question 19

What is chyme

Answer 19

Pulpy acidic fluid which passes from the stomach to the small intestine

Question 20

Why doesn’t the small intestines have a lot of bacteria

Answer 20

Because it comes from the stomach (which has acid) and passes through quickly

Question 21

What diseases that we covered were caused by Clostridium

Answer 21

Gangrene, botulism, tetanus