_sophiestudies_ okay thanks!
VCE Biology Questions Thread
TotoroGhibli
Thankss!
Is the proteome defined as all the proteins in an organism at a given point in time or is it defined as all the proteins made throughout the life of an individual?
Taaaa76 the first one.
TotoroGhibli okay thankss
does anyone know if we need to know about reverse transcriptase and why is can't be used for some viirus testing in pcr?
if we do can someone let me know the answer because i've tried searching on google but I can't find anything that relates to any other dot points.
prettypink1881
I remember hearing about something like this.
Is this from a question in the 2022 exam?
Taaaa76 yeah question 2c short answer.
"Two reasons why RT-PCR cannot be used on all viruses included:
• a suitable probe may not be available or a complementary probe has not been produced
• not all viruses are made of RNA, or the nucleotide sequence in a virus may not be unique enough.
Students who were able to apply their knowledge of complementary sequences to this unfamiliar situation provided suitable reasons."
I get the second option, but I don't understand the first; do you know what suitable probe means?
is divergent and convergent evolution still on the study design?
prettypink1881 The stem of that part of the question says the probes attach only to complementary sequences on particular viruses. So if a probe didn't exist with that particular complementary sequence then it wouldn't work because the probes are required for RT-PCR. I think?
jessh24 No. In the biology FAQ document, it specifically states that knowledge of convergent and divergent evolution is not needed. You just need to know what homologous, analogous, and vestigial structures are (this is basically convergent and divergent evolution anyways). However, divergent evolution is basically just regular evolution, thus you may need to know it.
jessh24 yeah that makes sense, thanks!!
Does anyone know if we need to know specific ways that scientists use CRISPR technology to modify organisms like non-homologus or homologous end joining?
Meep<3 You do not need to know the specifics of NHEJ and HDR. You simply need to know that genes can be knocked in and out.
ohh okk thankss
does anyone know how the adaptive immune response rejects a transplant organ? is it the same in that apcs engulf the foreign antigens etc, or is it different?
prettypink1881
Your body rejects an organ when its antigens arent the same as yours, so it will recognise it as non-self and basically initiates the adaptive immune response to get rid of it