 
<translate> Kwuo otú e si atụgharị uche n'isiokwu ahụ, kọwaa nke ọ bụla n'ime ha, ma kwuo ihe bụ azịza ya. N'okpuru ọnọdụ uto ọkọlọtọ, ụdị nje bacteria, E. coli, nwere oge okpukpu abụọ nke minit 20. Ọ bụrụ na e jiri otu mkpụrụ ndụ nje mee ihe iji malite ịkpa mkpụrụ ndụ n'okpuru ọnọdụ uto ọkọlọtọ, mkpụrụ ndụ nje ole ka a ga-enwe mgbe a zụlitere mkpụrụ ndụ ahụ ruo awa anọ? <eng> Give the step-by-step reasoning process and then the final answer. Under standard growth conditions, the bacterial strain, E.coli, has a doubling time of 20 minutes.  If 1 single bacterial cell is used to start a culture grown under standard growth conditions, how many bacterial cells will there be after the culture is grown for 4 hours? 