lecture quiz 3 answers

Question 1

a microorganism that does not have catalase or superoxidase dismutase would find it difficult to live in an environment with

Answer 1

oxygen

Question 2

an organism that grows slowly in the cold but has an optimum growth temp of 25 degrees C

Answer 2

psychrotroph

Question 3

bacteria living in a freshwater stream that are moved to salty seawater would

Answer 3

shrivel

Question 4

when microbes are in a close nutritional relationship and one benefits but the other is not harms it is called

Answer 4

commensalism

Question 5

the phase of the bacterial growth curve in which newly incolulated cells are adjusting to their new environment metabolizing but now growing is the

Answer 5

lag phase

Question 6

an organism with a temp growth range of 45-60 would be

Answer 6

thermophile

Question 7

human pathogens fall into the group called

Answer 7

mesophiles

Question 8

an organism that cannot tolerate an oxygen environment is

Answer 8

obligate anaerobe

Question 9

an organism that respires using oxygen when it is present but can switch to an alternative anaerobic pathways when it is absent is

Answer 9

faculatative anaerobe

Question 10

when microbes live independently but cooperate and share nutrients it is called

Answer 10

synergism