Taaaa76 No. the pre-mRNA strand is synthesised in a 5'-3' direction. DNA runs in an antiparallel assortment, thus to synthesise a 5'-3' pre-mRNA strand, the DNA template strand must be read in a 3'-5' direction
VCE Biology Questions Thread
does anyone know how much detail we need to know about the steps of recombinant plasmids?
prettypink1881 i am writing a whole essay if a question about that comes on the exam lol
What is scaffold rna?
Taaaa76 This knowledge is not required, but it is commonly referred to as tracrRNA. It essentially anchors the gRNA to the Cas9 endonuclease.
do we have to know specific numbers for the inputs and outputs for cellular respiration and photosynthesis?
eg. 12 ADP+Pi ---> 12 ATP (photosynthesis light dependent stage)
Lemonade_222 I think we only need to know the speciifc coenzymes invloved but not the numbers.
Lemonade_222 Only for ATP.
Also slight correction, it is 18 ATP that is produced.
Do we need to know positive and negative controls of PCR?
oops my mad, got confused with NADPH
Taaaa76 I am not entirely sure, but I am pretty sure specifics of the negative and positive control for PCR are not required. You should generally know the function of a negative and positive control, as they very well could relate such key knowledge (of that being scientific investigation) to PCR and involve positive and negative controls.
stevendort sorry i meant for gel electrophoresis, what are the negativr and positive controls for PCR?
Taaaa76 Sorry I also meant gel electrophoresis, mb.
But I can honestly imagine a question 11 on gel electrophoresis and the examiners asking what the function of a specific lane acting as a control is. So I would honesty remember, briefly, the functions of the positive and negative control.
how was the bio exam?
010000studyhard
it was alright. The Multple choice was pretty easy like always. The short answer required more application questions, and i missed like 6 questions due to less time and couldn't come up with answers for those. SO yeah i prob barely passed
what about u?
HKS
omg I lost like 5 marks cuz of that one human insulin question
Lemonade_222
thats not bad...u prob will get like a 90-100%
HKS
nahhh im sure I lost more marks its just that im 100% sure I lost that 5 marks
HKS hey if it makes you feel better, because you made me feel better knowing i wasnt alone because all my friends finished, but i also ran out of time and missed pretty much the same amount of questions. in my normal practice exams i had lots of time left, but for the actual exam i ran out of time. but it's ok hopefully, other people may be in the same boat and some people have said this was a harder exam, so if people finished, they may not have got it all right anyway