Module 3- Microbial growth

What microbes can grow in an environment that has low pH?

• Acidophile

• Neutrophile

• Alkalophile

These are microbes that can survive high temperatures.

• Psychrophile

• Thermophile

• Mesophile

pH requirement for molds and yeast?

• 6.5-7.5

• 5-6

• 7-8

• 3

Microbes that grow in cold temperature

• Psychrophile

• Mesophile

• Thermophile

The optimum temperature where most bacteria can survive

• 31-40

• 30-37

• 31-41

• 30-39

What is the effect of hypotonic solution to bacterial cell?

• shrink

• burst

• nothing

•Microbes that adapts to high salt concentration

• Neutrophile

• Alkalophile

• Halophile

Phase of bacterial growth where cell increases in size but not in number

• Exponential phase

• Interphase

• Stationary phase

• Decline phase

Phase of bacterial growth where the number of death is equals to the number of new cell

• Lag phase

• Stationary phase

• Death phase

• Log phase

Microorganisms that take up carbon from their source of energy

• Chemoautotrophs

• Heterotrophs

• Chemoheterotrophs

• Photoautotrophs