P2. Bacterial Growth Phase.

Question 1

The Four (4) Growth Phase of Bacteria?

Answer 1

1. LAG
2. LOG/ LOGARITHMIC/ EXPONENTIAL
3. MAXIMUM STATIONARY/ PLATEAU
4. DECLINE/ DEATH

Question 2

• bacteria are STILL ADJUSTING TO THE NEW ENVIRONMENT.
• NO CELL DIVISION
• synthesize DNA & proteins (actively?)

Answer 2

LAG PHASE

Question 3

• SUDDEN INCREASE OF BACTERIA
• bacteria are MOST METABOLICALLY ACTIVE
• SUSCEPTIBLE to **ANTIMICROBIAL AGENTS*

Answer 3

LOG/ LOGARITHMIC/ EXPONENTIAL PHASE

Question 4

sudden increase of bacteria in the Exponential phase is because of???

Answer 4

RAPID GENERATION

or

DOUBLING TIME

Question 5

• essential NUTRIENTS depleted = TOXIC PRODUCTS acumulate
• oxygen becomes limiting
• rate of cell division = rate of cell death

Answer 5

MAXIMUM STATIONARY

or

PLATEAU

Question 5

NUMBER GENERATION PER HOUR in Log phase is called?

Answer 5

GROWTH RATE CONSTANT

Question 6

• UNFAVORABLE ENVIRONMENT for growth.
• cell division decreases = cell death increases.

Answer 6

DECLINE

or

DEATH

Question 7

Lag Phase:
1. Cell Division?
2. Increase in Number?

Answer 7

1. NO
2. NO

Question 8

Log Phase:
1. Cell Division?
2. Increase in Number?

Answer 8

1. YES
2. YES

Question 9

Maximum Stationary Phase:
1. Cell Division?
2. Increase in Number?

Answer 9

1. YES
2. YES

Question 10

Decline Phase:
1. Cell Division?
2. Increase in Number?

Answer 10

1. YES
2. NO