1) What is the 'functional importance' of the four levels of protein structure aside from tertiary and quartenary proteins actually doing things?
2) What's the difference between RNA processing and transcription? Would I just refer to the post-transcriptional modifications as RNA processing?
3) How does temperature affect the rate of photosynthesis? I've heard mixed things about this.
4) Where do pheromones originate from usually (i.e what glands)?
1. It's basically just that. The protein structure gives it a specific 3D shape that allows it to function.
2. RNA processing occurs after transcription, it's just another name for post transcriptional modifications.
3. You'll have heard different things because VCE oversimplifies it. For VCE, lower temperature result in slower rates of photosynthesis, higher temperatures result in faster rate up to a point, and then the rate drops to 0 as temperatures increase because the proteins are denatured.
4. They're released from exocrine glands, but you can't really be any more specific than that because there's heaps of different types produced in lots of different spots, for example in humans they're produced in testes and ovaries, adrenal, and apocrine glands.