HSC Biology - 28/10/19 - Discussion, Questions & Potential Solutions

[Joseph41]

Post all exam discussion, questions, and sample solutions for English Extension 1 here!

[thereal_laura]

okay that exam begun my alzheimer's....

other things i can mention i thought were interesting or just stupid
1. chickens and seeds
2. milk ......?
3. after studying the ears, the eyes, the kidneys, we get a question on .... the......... brain? wuh
4. amyloid beta protein :O
5. herpes + dementia = alzheimer's?
6. how TF ARe YoY suPPosed tO ConVincCE tHE mARker thAT alzheimer's is NOn InfeCTious
7. nesa: ahh yes study all of the syllabus and we'll test you on about 20%, the rest are skills, enjoy < 3
8. page 1 - graph, page 2 - graph, page 3 - graph, page 4 graph.......
9. you probably could've gotten away with not studying honestly
10. pasteur and koch, wjho?
11. what a weird paper, even the wording was almost sketchy
12. the punnet square question but nowhere to put the punnet square
13. ughhhhhhh the malaria epidemiology study made me wanna leave this planet
14. no diagram or drawing questions? (other than the punnett square) really? i was excited for that but oh well

OKAY NOW SERIOUSLY -------------

what did yall say for the agar throat swab? out of W X Y Z
i said it was W but y'know, me = dumb

also i was really confused with the question about the crossing over and the key.
im rlly dumb so i just coloured in each section that will be crossed over in blue and pink
and make some attempt in naming the alleles.

hope everyone did way better than me tho!
congrats of overcoming 2 strenuous years of biology
YOU ARE AMAZING - now sleep, eat and keep pushing through these exams!!!!

#byeology
#HSCYALATER

[worldno1]

how did yall answer the lactase question?

i spent a bit talking about how mutations in non-coding dna can cause the transcription/prevent the "switching off" of the lactase gene, in addition to natural selection - not sure if that's the right way to go about it

[Pearlmilktea]

6. how TF ARe YoY suPPosed tO ConVincCE tHE mARker thAT alzheimer's is NOn InfeCTious

Lol ikr that was a bit of a challenge. I spoke about it having a genetic disposition and rather how it could not be non-infectious as it was not caused by a causative pathogen. I said the virus was a risk factor that increase the cumulative risk but wasn't the direct cause of the disease ... lol I tried 

what did yall say for the agar throat swab? out of W X Y Z
i said it was W but y'know, me = dumb

I'm sure I did W too because it targeted both bacteria. I almost chose the other options but they rather were really good at targeting one bacteria but not another which was beside the point so I agree with W!!!

also i was really confused with the question about the crossing over and the key.
im rlly dumb so i just coloured in each section that will be crossed over in blue and pink
and make some attempt in naming the alleles.

Yep that Q was so meticulous and I had no space whoops

[Pearlmilktea]

how did yall answer the lactase question?

i spent a bit talking about how mutations in non-coding dna can cause the transcription/prevent the "switching off" of the lactase gene, in addition to natural selection - not sure if that's the right way to go about it

hmmm yes I probably should've touched on coding/ non-coding too.
I also spoke about mutations and how natural selection (like you said) and environmental pressures would lead to the increase in prevalence of the lactase gene. I said that in the other populations that the gene was in lower numbers as it didn't necessarily give a survival advantage, leading it to be as prevalent in the population as the other gene