A bacterial culture initially has 100 bacteria and doubles in number every 3 hours. How many bacteria will there be after 12 hours?

✓ Correct Answer: Option B

The formula for exponential growth is N(t) = N₀ * 2^(t/h), where h is the doubling time. N(12) = 100 * 2^(12/3) = 100 * 2⁴ = 100 * 16 = 1600 bacteria.