"Cells in the lining of the stomach produce a protein called pepsinogen. When this protein is released into the chamber of the stomach, the stomach acid cleaves off a section of the protein, which now becomes an enzyme called pepsin. In this form, pepsin will actively begin the breakdown of proteins in food." This is an example of which type of eukaryotic gene regulation?

Precursor gene regulation (protein translation)

Explanation:

Precursor. Pepsin is expressed as a zymogen called pepsinogen, whose primary structure has an additional 44 amino acids. In the stomach, chief cells release pepsinogen. This zymogen is activated by hydrochloric acid (HCl), which is released from parietal cells in the stomach lining.

i'm pretty sure it's spores

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.