Temperature Ch.5

Question 1

Can be found in temperate regions of the world and commonly encountered on spoiled refrigerated foods (4•C )

Answer 1

Psychrotrophs or psychotolerant

Question 2

Bacillus anthracis spores germinate in the

Answer 2

Lower respiratory tract and the resulting vegetative cells secrete two deadly toxins

Question 3

A suitable environment for the development of botulism is

Answer 3

Vacuum-sealed cans of food

Question 4

Produce highly resistant spores:

Answer 4

Bacillus & Clostridium

Question 5

E.coli (temperature)

Answer 5

Mesophile

Question 6

Could not be human pathogens because they cannot grow in 37•C body temperatures

Answer 6

Psychrophiles + thermophiles

Question 7

Campylobacter jejunji (temperature)

Answer 7

Psychrotroph

Question 8

Development of tetanus and gas gangrene happen in

Answer 8

Dead tissue in a wound

Question 9

Includes pathogens that grow in warm-blooded animals including humans

Answer 9

Mesophiles

Question 10

Microbes that have their optimal growth rates below 15•C but can still grow at 0•C to 20•C are called

Answer 10

Psychrophiles

Question 11

Can multiply best at 60•C but still multiply from 40•C to 70•C

Answer 11

Thermophiles

Question 12

Archaeal species that grow optimally at temperatures that exceed 80•C

Answer 12

Hyperthermophiles

Question 13

Thrive at the middle temperature range of 10•C to 45•C

Answer 13

Mesophiles