Bacillus

Question 1

Gram-positive, ______________, rod shaped, facultative anaerobic

Answer 1

Spore forming

Question 2

What is the pH range of bacillus?

Answer 2

4.3-9.3

Question 3

What are the 2 food poisoning manifestations?

Answer 3

Diarrheal and emetic food poisoning

Question 4

What causes diarrheal food poisoning?

Answer 4

Caused by enterotoxins

Question 5

What causes emetic food poisoning?

Answer 5

emetic toxin that is produced by cell growth on food

Question 6

What is the source of diarrheal food poisoning?

Answer 6

Fish and meats

Question 7

How long does diarrheal food poisoning last?

Answer 7

Duration 12-24 hours

Question 8

Where does B. cereus grow?

Answer 8

Small intestine

Question 9

What is the source of emetic food poisoning?

Answer 9

Starchy food like rice

Question 10

What is the duration of emetic food poisoning?

Answer 10

6-24 hours

Question 11

What creates simpler small peptide chains?

Answer 11

Amino acid synthetase

Question 12

What toxin is heat stable?

Answer 12

Emetic

Question 13

True or False. The two food poisoning manifestations are mild, brief and self-limiting.

Answer 13

True

Question 14

Does bacillus compete well with other organisms?

Answer 14

No

Question 15

True or False. Bacillus is a spores producer.

Answer 15

True

Question 16

True or False. Spores can be present in soil at 10^5/g

Answer 16

True

Question 17

Bacillus may produces up to ______hemolysins, 3 phospholipases

Answer 17

4

Question 18

True or False. Spores survive pasteurization

Answer 18

True

Question 19

What are 2 defects is canned condensed milk?

Answer 19

Sweet coagulation and flat sour defect