Exam Discussion

[ChickenCh0wM1en]

do you think they accept a lot of answers for the polypeptide question seems it could be interrupted differently?

they may be more lenient depending on how the rest of the state answered the question.

[amilss]

do you think they accept a lot of answers for the polypeptide question seems it could be interrupted differently?

Yes, defintely. Lots of the assessment reports had questions that were awarded marks either way so long as your explanation made sense, and in this case, matched the graph you drew

[G-lain]

Yeah, I was thinking that when I was reading the question too! But I remembered a multiple choice question on the 2009 VCAA exam, where a diagram showed that proteins were being broken down into polypeptides and just went with my explanation.

I don't know, I find VCAA tend to be a bit all over the place with some questions. This is from the answer to multiple choice 25 on the 2009 exam. "Step R involves peptidases converting proteins (polypeptides) to peptides", I couldn't find the question you were referring to, but it sounds familiar.
Either way, your explanation sounds quite sound so we can just go with that

[InsaneMcFries]

I don't know, I find VCAA tend to be a bit all over the place with some questions. This is from the answer to multiple choice 25 on the 2009 exam. "Step R involves peptidases converting proteins (polypeptides) to peptides", I couldn't find the question you were referring to, but it sounds familiar.
Either way, your explanation sounds quite sound so we can just go with that

That's very interesting. I can see a lot of complaints to VCAA either way. Wonder how the assessors will feel about the exam?

[MisterTransistor]

I thought that the polypeptides were being broken down into amino acids. Not proteins being broken down into polypeptides. But thinking about it, either way could make sense depending on how you explained it.

[itsdanny]

What a controversial exam, can't wait to see VCAA's comments on all of this.

[ligands]

What a controversial exam, can't wait to see VCAA's comments on all of this.

was only the polypeptide question controversial?

[InsaneMcFries]

was only the polypeptide question controversial?

There were a couple more, such as compound Y in the cycle for Chlorella.

[Wazzup]

they should give everyone the marks lool

[Gazillionaire]

Was the process positive or negative feedback?!

[diam0nds]

Was the process positive or negative feedback?!

the 'rod cell' thing? lol i said it wasn't negative feedback

[InsaneMcFries]

It wasn't negative feedback, it was just stimulus-response as the response did not act to reverse the stimulus which was light.

[LOLs99]

shouldn't it mean that there is a higher concentration of polypeptides in the thang thang then... lol.

umm probably, wasnt the graph for 35 degress already fairly high? I just assumed it would be lower lol

edit:yep, i just assumed polypeptide was ammino acids haha, lost 2 marks there.

But the 35/37 degree, it is already high in concentration. So I assumed it will be lower. I found that the question doesnt really explain well. I just put lower a bit for the 10degree compared to 80degree.

[kensan]

Was the process positive or negative feedback?!

the 'rod cell' thing? lol i said it wasn't negative feedback

yeah i said that too, didn't really have a concise explanation though. I said because a variable wasn't being controlled

[lukeim]

I thought 80degrees was to week to break covalent bonds(peptide bonds) and would only disrupt the bonds maintaing the shape of tertiary and secondary stucture