Chap 5

Question 1

There are three phases of binary fission:
B
C
D
Explain yoself

Answer 1

B: begins to divid
C: chromosome replicates
D: division if complete

Question 2

First phase of microbial is the lag phase in which…

Answer 2

no division occurs, adapting to environment

Question 3

second phase is the log phase…what happens?

Answer 3

start to divide

Question 4

T or F: Stationary phase - stable but new cells are forming and some cells are dying - even numbers

Answer 4

True

Question 5

Death phase, what happens?

Answer 5

99 percent die due to lack of food.

Question 6

Final stage is late stationary phase

Answer 6

when they begin to eat each other; if spore former, will beingforming spores

Question 7

Temporary metabolic shutdown in time of stress produces these cells?

Answer 7

persister cells

Question 8

Highly resistant structures formed by bacillus and clostridium when nutrients are low….

Answer 8

endospores

Question 9

Effects the growth of microbes

Answer 9

ph, temp, oxygen, pressure

Question 10

Complex media

Answer 10

all ingreddients known

Question 11

selective media does what?

Answer 11

inhibits the ones you do not want and grwos what you do

Question 12

differential

Answer 12

contains chemicals like dye and ph indicators to determine specific species

Question 13

TFTC

Answer 13

less than 30

Question 14

TMTC

Answer 14

over 300