Impact of Enviromental Factors on Growth

Question 1

T/F: Bacteria can thermoregulate.

Answer 1

F

Question 2

Every organism has a specific temperature range defined by three ________ ____________.

Answer 2

cardinal temperatures

Question 3

What are the four environmental effects on microbial growth?

Answer 3

-temperature
-pH
-osmolarity
-oxygyen

Question 4

Is the minimum temperature dictated by enzymes or the cell membrane?

Answer 4

enzymes

Question 5

T/F: The optimal temperature is closer to the minimum temp because that’s where there is more fluid, it’s more energetic, and it’s faster.

Answer 5

F- maximum temp

Question 6

Is the maximum temperature dictated by enzymes or the cell membrane?

Answer 6

cell membrane

Question 7

What temperature can prokaryotes grow past?

Answer 7

65 degrees

Question 8

What is the max temperature for bacteria and archaea?

Answer 8

95 degrees

Question 9

What are the 5 temperature classes of microbes?

Answer 9

-pshychrophile
-mesophile
-thermophile
-hyperthermophile
-hyperthermophile (??)