Biology Predictions/Thoughts (6 Viewers)

[SASH_06_X]

For all those doing the Biology HSC tomorrow, who did the 2022 HSC Biology Paper (as practice) recently, what did you all get for raw marks? I'm just asking in comparison to see if I'm above or below what I should be getting...

I got 84

Got 88 lol

 

[Masaken]

5

my notes have case studies regarding population management
so for conservation i have the cheetah and using genetic markers to track genetic variation, genome wide association studies for disease and disorder and replacement hypothesis for human evolution

 

[Unovan]

my notes have case studies regarding population management
so for conservation i have the cheetah and using genetic markers to track genetic variation, genome wide association studies for disease and disorder and replacement hypothesis for human evolution

damn how did i miss getting case studies for that dp

eh still have plenty of time

 

[SadCeliac]

WHAT IS THE DIFFERENCE BETWEEN MHC I AND MHC II ????

 

[Masaken]

WHAT IS THE DIFFERENCE BETWEEN MHC I AND MHC II ????

MHC II is expressed on antigen-presenting cells (B cells, macrophages, dendritic cells), MHC I is expressed by any cell with a nucleus. MHC I presents antigens that are intracellular while MHC II presents antigens that are extracellular (and are thus part of cell-mediated immunity)

 

[nsw..wollongong]

MHC II is expressed on antigen-presenting cells (B cells, macrophages, dendritic cells), MHC I is expressed by any cell with a nucleus. MHC I presents antigens that are intracellular while MHC II presents antigens that are extracellular (and are thus part of cell-mediated immunity)

do u have to know this wtf

 

[Masaken]

do u have to know this wtf

it's part of the adaptive immune system

 

[nsw..wollongong]

it's part of the adaptive immune system

ik but to this extent? crap then there's a lot i don't know abt

 

[SASH_06_X]

MHC II is expressed on antigen-presenting cells (B cells, macrophages, dendritic cells), MHC I is expressed by any cell with a nucleus. MHC I presents antigens that are intracellular while MHC II presents antigens that are extracellular (and are thus part of cell-mediated immunity)

bro wth that isn't even in my textbook or my notes-
ugh it's too late to remember this with all the revising i've already got to do so MHC I AND II just have to stuff it

 

[Retrodawn]

any ideas on what the 2 7-9 markers gonna be on? they usually put a large one on epidemiology but what are the other alternatives?

 

[SASH_06_X]

any ideas on what the 2 7-9 markers gonna be on? they usually put a large one on epidemiology but what are the other alternatives?

pharamceuticals/adaptive immune system/effectiveness of technologies to assist disorders

 

[SASH_06_X]

or one of those pestiliential scenario based 7-9 markers such as " EGFR mutations are present in about 32% of cases of Non-Small Cell Lung Cancer (the most common type of lung cancer). Explain how a mutation in the EGFR gene could result in changes in protein structure and function to increase the risk of lung cancer." (yh so this was in last yr 's paper so this years one might be on scenario based one from heredity or infectious diseases i think)

 

[Pollypopkin]

guys how do u make a graph for allele frequency I’m trying to do a past paper from cssa and I don’t even know where to start

 

[Pollypopkin]

guys how do u make a graph for allele frequency I’m trying to do a past paper from cssa and I don’t even know where to start

 

[SadCeliac]

x axis (independent variable) is the generation
y axis (dependent variable) is the allele frequency

make sure that you use crosses, and a line of best fit, as well as having a suitable scale that ensures the graph covers at least half the available given space

 

[goodcat911]

is it fine if we use pens and dont use rulers for punnett squares and tables that we include in responses (e.g i wanna have a punnett square in a 7 marker)?

 

[nsw..wollongong]

is it fine if we use pens and dont use rulers for punnett squares and tables that we include in responses (e.g i wanna have a punnett square in a 7 marker)?

ur not even required to use pencils for punnett squares its fine if u use pens

 

[bingobee]

which past papers are the most worth doing? or how hard did you guys find the past papers?

 

[SadCeliac]

which past papers are the most worth doing? or how hard did you guys find the past papers?

bruhhh the test is tomorrow
HSC is >>>

 

[nsw..wollongong]

good afternoon everyone im currently shitting bricks my friend called me crying saying she doesn't understand the role of an ultrasonic probe in cataract surgery and im here still grappling with the fact that cataract surgery not only exists but is in the textbook is this presumed knowledge?
kind regards,
.