Lecture 28: Microbial population growth Flashcards
smaller organisms can grow…
faster
binary fission is…
the process by which microorganism can replicate themselves
prokaryotes reproduce…
asexually
the process by which prokaryotes reproduce is…
binary fission
binary fission results in the formation of
two cells that are genetically identical
step 1 of binary fission:
chromosome replication begins
step 2 of binary fission:
one copy of the origin moves to each end of the cell
step 3 of binary fission:
replication finishes
step 4 of binary fission:
two daughter cells result
closed batch culture system refers to
a form of cell culturing
closed batch culture systems have a defined
supply of nutrients
once nutrients in a system have been used cells cannot
proliferate
what is the “lag phase” of microbial growth in a closed batch culture system
the time required to get biosynthetic reactions occurring
what is the “exponential phase (log phase)” of microbial growth in a closed batch culture system
- where cells are actively dividing and nothing is limiting growth
- population is doubling
what is the “stationary phase” of microbial growth in a closed batch culture system
- cells stop growing and cryptic growth is observed