I think that agar block contains growth hormone 。。。。 Did you not listen to the class properly 。。。。。 I'm sure the teacher will talk about this in class 。。。。 (or maybe you didn't read the book)

I'm so confused 。。。。 If I had a book, would I have answered so uncertainly? I'm speechless 。。。。

Also I don't want to argue with you, but I don't really agree with what you added either. If you don't know, it's perfectly fine to ask your teacher about these questions that involve textbooks. Wouldn't asking the teacher solve the problem faster than spending time here? Although I don't know what the person you're talking about has his point of view, I don't think the point you're making is quite the same as his own. He should have meant that you "didn't listen to the lesson" (because you said you forgot what it was for), but what you said was "what form of knowledge is learning". Doesn't seem to be a problem, does it?

I've been out of high school for a few years now, and in my time the internet itself wasn't very well developed in my country, and my parents restricted access to it, but I was still relatively good at biology in my class. The internet is really convenient, but not all information is accurate, and I think it's best to ask your teacher first if the issue involved is academic. (If you think I also owe scolding then feel free to scold well, anyway, I do not hurt.)