Skip to content
World 3 · Doubling on a Plate · 14 min · PRO

Counting colonies: serial dilution

How to count what you cannot see

PRO · Microbe Zoo

World 3: Doubling on a Plate is part of PRO

The first world of Microbe Zoo is free. PRO opens the other 27 lessons in 6 worlds — simulations, quizzes and all.

  • Binary fission: one becomes two
  • The doubling rule: N = N₀ × 2^(t/td)
  • The four phases of a growth curve
  • Warm food, cold food
  • A virus is not a cell
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

Unlock Microbe ZooTry the free world
My notes
Only saved in this browserAll my notes →
← The four phases of a growth curveWarm food, cold food →

Report a mistake

What is wrong?
0 / 2000 · at least 10 characters
Sent along with your report
  • Page
  • About Counting colonies: serial dilution — Microbe Zoo · microbes/counting-colonies
Plus your browser type. Reports go to our support system; see the privacy notice.