HW 6-2 Growth and Media Flashcards Preview

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Flashcards in HW 6-2 Growth and Media Deck (23):
1

What is the label for the horizontal microbial growth curve

hours

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what is the label for the vertical microbial growth curve

logarithm of visible cells

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microbial growth curve phase A

lag phase

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microbial growth curve phase B

exponential growth phase

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microbial growth curve phase C

stationary Phase

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microbial growth curve phase D

death phase

7

according to microbial growth curve, identify the phase: cell division=cell death

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8

according to microbial growth curve, identify the phase: cell division < cell death

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9

according to microbial growth curve, identify the phase: cell division > cell death

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10

according to microbial growth curve, identify the phase: cells metabolically active but not yet dividing

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11

according to microbial growth curve, identify the phase: best time to subculture

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12

If a culture starts with 256 bacteria how many generations does it need to go through to reach 4096?

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13

Exactly 100 bacteria with a generation time of 30 minutes are introduced into fresh sterile broth at 8:00 a.m. and maintained at an optimum incubation temperature throughout the day. How many bacteria are present at 3:00 p.m.? How many generations will take place by 5:00 p.m.?

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14

In the above example, do you think that the number of bacteria could continue to double every 30 minutes indefinitely? Why do you say that?

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15

Bacterial growth measures increases in the size of a(n) _____________, while the growth of a multicellular organism refers to an increase in the size of a(n) _____________.

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16

A ____ is a single cell or group of related cells that gives rise to a colony.

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17

Differential

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18

Semisolid

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19

complex

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20

selective

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21

enriched

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22

liquid

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23

synthetic

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