Final Exam

Question 1

Describe the Microbial growth.

Answer 1

Lag phase - flat
Exponential phase(log)- pasaka
Stationary pahse - top flat
Death pahse - pa ubos

Question 2

True or false.
Refers to an decrease in cell number, and increase in cell size

Answer 2

False.

Question 3

Reproduction of bacteria

Answer 3

Binary fission

Question 4

Physical factors affecting growth

Answer 4

-pH
-temperature
-Radiation
-osmotic pressure
-Salinity

Question 5

Chemical factors affecting growth

Answer 5

-O2
- carbon
-Nitrogen
-Phosphorus

Question 6

Group of microbes based on temperature requirement.

Answer 6

-Psychrophiles or Cryophiles
-Mesophiles
- Thermophiles
-Hyperthermophiles

Question 7

Capable of growth at 50 degree Celsius or higher.

Answer 7

Thermophiles

Question 8

Growth between 80-113 degree Celsius .

Answer 8

Hyperthermophiles

Question 9

Growth and reproduction from -20-10 degree Celsius