Physiology & Growth (Exam 1)

Question 1

What is the optimal growth temperature class which most pathogenic bacteria would be put in?

Answer 1

thermophile (>45C)

Question 2

What two classes of bacteria are capable of good growth in a refrigerator?

Answer 2

psychrophile
psychotroph

Question 3

In terms of bacterial classification by oxygen requirements, what is the term for bacterium which require oxygen at a reduced concentration?

Answer 3

microaerophile

Question 4

Term for bacterial class which has best growth with increased CO2 levels.

Answer 4

capnophile

Question 5

Class of bacteria which will grow well with or without oxygen.

Answer 5

facultative anaerobe

Question 6

Class of bacteria where oxygen is highly toxic.

Answer 6

obligate anaerobe

Question 7

Class of bacteria where oxygen is required for growth.

Answer 7

obligate aerobe

Question 8

Obligate anaerobic bacteria do not have this pathway for carbohydrate utilization.

Answer 8

Kreb’s cycle

Question 9

What is the importance of oxidation/reduction in biological systems?

Answer 9

transfer of electrons to make ATP (energy source)

Question 10

_______ is the biosynthesis process while ________ is the substrate breakdown process.

Answer 10

anabolism
catabolism

Question 11

Catabolism (requires/generates) ATP. Anabolism (requires/generates) ATP.

Answer 11

generates
requires

Question 12

(T/F) A gain of an electron is considered oxidation of the recipient compound.

Answer 12

False - reduction

Question 13

What enzyme in the membrane allows for ATP generated and is coupled to proton motive force?

Answer 13

ATP synthase