It is not exactly easy to find out what is the syllabus content for the Biology component of the SAT. I hope these ages will help.
These seem to be the best Biology test preparatory guides:
- PRINCETON: http://www.amazon.com/Cracking-Biology-Subject-2013-2014-Preparation/dp/0307945529/ref=sr_1_2?ie=UTF8&qid=1426125724&sr=8-2&keywords=biology+sat+ii
- BARRONS: http://www.amazon.com/Barrons-SAT-Subject-Test-Biology/dp/1438002130/
Here’s a link to a quite good break-down of the SAT Biology learning content: http://www.sparknotes.com/testprep/books/sat2/biology/