SAT II Bio, Chem, Math I

Hi I wanted to take the sat subject tests for bio, Chem, and math i next year.
I was wondering if bio was really hard because I took it in sophomore year and my teacher was pretty awful. I’m taking chem this year but I’m sure to forget a lot over the summer.

What’s typically on the Math I and II?

I haven’t taken them yet but I signed up for Chem and Math I. You can find what each test covers and even find some practice questions on college board’s website.