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Flashcards in growth Deck (49):
1

-5 to 15C

psychrophile

2

growth curve phases

lag phase
exponential log phase
stationary phase
death phase

3

alkalophile

above 8 pH

4

known quantities of broth but exact composition not known

complex

5

exponential log phase

where doubling time is measured in lab

6

binary fission

cell dividing into two

7

period of no growth
synthesis of new enzymes

lag phase

8

where doubling time is measured in lab

exponential log phase

9

obligate means

requried

10

exact composition of media known

defined

11

facultative means

have a choice

12

binary fission steps

cell grows
copy DNA
form septum
seperate

13

psychrophile

-5 to 15C

14

fastidious means

it requires many growth factors

15

45 to 70C

thermophile

16

aerobe

must use o2

17

biofilm steps

adsoprtion (sense environment)
attach to surface
growth
exopolymer production (slippery coat)
attachment of other organisms

18

defined media

exact composition of media known

19

stationary phase

population remains constant
cells die and others grow off dead cells
shrink in size to survive

20

above 8 pH

alkalophile

21

population remains constant
cells die and others grow off dead cells
shrink in size to survive

stationary phase

22

slime encased structure that holds bacteria onto a surface underwater

biofilm

23

must use o2

aerobe

24

biofilm

slime encased structure that holds bacteria onto a surface underwater

25

hyperthermophile

above 70C

26

types of media include

complex
defined
selective
differential

27

exponential decline in population

death phase

28

media that prevents growth of some bacteria

selective

29

acidophiles

less than 5.5 pH

30

thermophile

45 to 70C

31

selective media

prevents growth of some bacteria

32

cell dividing into two

binary fission

33

lag phase

period of no growth
synthesis of new enzymes

34

less than 5.5 pH

acidophiles

35

salt loving

laophile

36

Halophile

salt loving

37

anaerobe

dies when o2 is present

38

neutrophile

5.5 to 8 pH

39

meaning it requires many growth factors

fastidious

40

dies when o2 is present

anaerobe

41

25 to 45C

mesophile

42

distinguish types of bacteria biochemically

differential

43

doubling time formula

(initial size)(time) = (initial size)(2^number of doublings)

44

death phase

exponential decline in population

45

complex media

known quantities of stuff but exact composition not known

46

5.5 to 8 pH

neutrophile

47

mesophile

25 to 45C

48

above 70C

hyperthermophile

49

differential media

distinguish types of bacteria biochemically