That is good to know. What's the purpose of those questions anyway if they don't help you on the MCAT?
They feel useful (especially to less informed customers), remind people of college textbooks, and don't do any active harm. Plus it's the safe option from a corporate standpoint—very few people complain about these questions being there, but people
would complain about it if you took them away. Trying to transform them into something more MCAT-like would be an uphill battle involving energy that could be better spent elsewhere—in other words, hypothetically, if I'm a content person at Kaplan and I'm trying to pitch my boss on the idea or transforming the end-of-chapter questions, the follow-up would be (1) why fix it if it's not broke in terms of customer complaints, (2) if we are going to invest in creating new, MCAT-like questions and passages, why not put them somewhere with a greater payoff, like in a QBank or something? To be clear, I don't and haven't worked at Kaplan specifically, but in previous job roles in MCAT prep I've had very, very similar conversations, and I can tell you that the inertia can be strong when it comes to issues like this.
I've been reading each section to understand the topic only. I really haven't been going into everything like I did in undergrad. With that approach, is it OK if I don't get all of those discrete questions correct on the first try?
At this stage, it's about progress, not perfection. Use your judgment. Some discrete questions relate more to core concepts, other relate more to little details that you might only get around to memorizing later. It can't hurt to review the questions—that'll help make the content more familiar when you see it again later in your prep process. But don't let these questions grind you to a halt. Learn what you can, do your best to make sure that you understand the material well enough to be able to tackle a related passage, and move on so that you can focus more on practicing with realistic materials to solidify your knowledge.