For self-assessment questions, with exercises and discussions, just click on the correct topic at Biology GCSE & IGCSE Question Bank. The s-cool revision sitelets you revise the topic, summarizes the topic & tests you on it.Skooolgives you a lesson, including progress questions, for each Biology topic but you’ll need sound on for it. GCSE Bitesize has revision pages (that take you through the topic), a test and an activity.
B7.1 HORMONES
The only hormone we need to know about is adrenaline. Here GCSE Bitesize revises Hormones (7m 12s) in more detail than we need.
Here is Meiosisin american(and in more detail than you need).
Science Bank 9(Cells & Tissues): Part 3 (from 9m 15s) also covers Mitosis & Meiosis. As doesCell Division (a 2m 3s vid from BBC iScience) & Cell Division (a 5m 23s vid from GCSE Bitesize).