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Bio200: COTC 2023 > Crossword CPA #7 > Flashcards

Crossword CPA #7 Flashcards

1
Q

period in which the maximum number of microbes are growing in a medium

A

stationary

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2
Q

type of media; aka synthetic media

A

defined

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3
Q

organism that prefers a pH less than 6.5

A

acidophiles

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4
Q

type of method to count cells; ie microscopic counts, serial dilution with variable plate counts

A

direct

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5
Q

how bacteria reproduce; population doubles every generation time

A

binary fission

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6
Q

organisms that prefer to grow in salty areas

A

halophiles

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7
Q

sticky formation that causes tooth decay

A

biofilm

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8
Q

organism that gets energy from chemicals

A

chemotroph

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9
Q

type of method to count cells; ie turbidity, metabolic measurements, dry weight, PCR

A

indirect

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10
Q

term used to graphically describe bacteria growth (2 terms)

A

exponential or logarithmic

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11
Q

organism that causes dental caries

A

Streptococcus mutans

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12
Q

process to preserve cells by removing all liquid in the broth so that you can deep-freeze the pellet

A

lyophilization

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13
Q

period of bacteria growth

A

logphase

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14
Q

ie a nutrient rich test tube or plate that allows bacteria to grow

A

medium

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15
Q

oxygen is deadly to these organisms

A

obligate anaerobes

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16
Q

organisms that prefer a pH greater than 7.5

A

alkalinophiles

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17
Q

ie the small amount of bacteria that you put in a nutrient rich test tube/plate to grow

A

inoculum

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18
Q

organisms that prefer to grow in very, very hot temperatures (80C+)

A

hyperthermophiles

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19
Q

how long it takes for a particular bacteria population to double

A

generation time

20
Q

organisms that prefer a pH of 6.5 to 7.5

A

neutrophiles

21
Q

refers to either a test tube full of microbes or the process of inoculating a test tube to allow microbes to grow

A

culture

22
Q

ie spots of bacteria on a plate

A

colonies

23
Q

organisms that need 2-10% of oxygen to survive (ie H. pylori)

A

microaerophiles

24
Q

organisms that prefer to grow in cold temp. (below 15C)

A

psychrophiles

25
Q

organisms that prefer to grow in hot, but not too hot, temps (45-80C)

A

thermophiles

26
Q

growth-limiting nutrient for many microbes; found in amino acids

A

nitrogen

27
Q

organisms that can survive with or without oxygen, but grow faster with O2 (ie E. coli)

A

facultative anaerobes

28
Q

organisms that get their carbon from other organsims

A

heterotrophs

29
Q

test tube with agar solidified at an angle to allow for more agar surface are to grow microbes

A

slant

30
Q

period in which bacteria death exceeds new bacteria formation in a medium

A

deathphase

31
Q

method bacteria use to estimate their population size in an area

A

quorum sensing

32
Q

organisms that need O2 to survive

A

obligate aerobes

33
Q

a single one of these is required for a pure culture; appears as one spot on agar plate

A

colony forming unit (CFU)

34
Q

organisms that prefer to grow when the temperature is 20C to 40C

A

mesophiles

35
Q

type of media; helps you pick out one particular type of bacteria if 2 different bacteria are growing on your plate due to visible differences in the media

A

differential

36
Q

ie a broth that contains only the progeny of one bacterium cell

A

pure culture

37
Q

organisms that can detoxify O2 to survive on O2-filled environments

A

aerotolerant anaerobes

38
Q

would not be carbon, hydrogen, oxygen, or nitrogen

A

trace elements

39
Q

a method in which cells of interest in a population of different cells are tagged with florescent dyes and then a machine is used to count each tagged cell

A

flowcytometry

40
Q

type of media; allows for several different types of microbes to possibly grow

A

complex

41
Q

chemicals needed to live; must be obtained from diet because you can’t make them in your body

A

growth factors

42
Q

type of media; encourages your preferred bacteria to grow and not others

A

selective

43
Q

period of slow growth after inoculation

A

lagphase

44
Q

how cloudy your cultured media broth is

A

turbidity

45
Q

organisms that make their own food with carbon

A

autotroph

46
Q

organisms that get their energy from sunlight

A

phototroph

47
Q

liquid media

A

broth

Bio200: COTC 2023 (69 decks)

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