bobert your word by word translation does not work here. And grammar and order of words are totally wrong.

Although amoebas are the topic, this is not a science lesson.
Хотя урок и посвящен амёбам, это не научный семинар.

There is idiom: "посвящать урок (чему-либо)".
Семинар — academic form of lesson, assotiated with discuttion, opposite to lection, where discussion absent.