Pearson Edexcel IAL Biology (YBI11)
May / June 2026

All supplied original files are unchanged; only available files are included.
Unit/paper references distinguish standard 01, 01A and History options.
Check the specification and any set texts applicable to the exam year.

WBI15/01: not supplied: scientific_article. The listed Pearson URL redirected to a teacher sign-in; a public downloadable copy was not yet located.

WBI15/01A: not supplied: scientific_article. The listed Pearson URL redirected to a teacher sign-in; a public downloadable copy was not yet located.
