I did - when I did the exam I said that the binding of the hormone to the receptor may change the shape of the receptor over time, leading to the decrease in response.
I wanted to know what the right answer would be because my answer doesn't sound right.
I'll acknowledge that it's a pretty shocking question. I'm not sure what answers they'd look for, because really, you shouldn't be expected to know and that'd mean anything is reasonable then.
Things that could be reasonable though:
-depletion of secondary messengers
-loss of receptors
Do we need to know in detail all of the steps of photosynthesis, aerobic cellular respiration and anaerobic cellular respiration? Like how each molecule interacts with the other to break it up and the order of those steps? Or just the inputs and outputs of each stage?
Inputs and outputs are probably fine. They're not likely to ask anything more complicated.