Question

Yeast reproduces by budding. In an experiment, a single cell has become two cells after 90 minutes. How many cells will be there after 6 hours?

12
16
24
720

Answer 1

the yeast will double in number every 90 minutes for a total of 360 minutes, so a total of four times. 1-2 2-4 4-8 8-16. therefore answer is 16.

Answer 2

assuming you start the 6 hours after tge first 90 mins, the answer is 16.