If activated yeast cells typically divide every 150 minutes, meaning each cell produces two new cells in that duration, how many cells will be in a yeast colony that had 250,000 cells three hours ago, six hours from now?

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125,000

1,000,000

2,000,000

Correct

3,000,000

4,000,000

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Official Explanation

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Activated yeast cells divide every 150 minutes, which means each cell doubles in number during that time. Starting with 250,000 cells three hours ago, we need to calculate the total time until six hours from now. This gives us a total of 9 hours (3 hours + 6 hours), which is…

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Comments

NehalMar 30, 2025

can you explain more?

SuhaniJun 15, 2024

thank you taking time to upload it!

What this question tests

What it tests

Your grasp of exponent rules — multiplying and dividing powers, power-of-a-power, and negative/zero exponents.

Common trap

Adding exponents when multiplying bases that have the same exponent, or confusing (x^a)^b with x^(a·b).