Biology Exam: Answers and Discussion!

[bonkbadonk]

Could someone explain how question 19 is cytotoxic t cells, because I thought cytotoxic T cells only killed virus infected cells?

The Cytotoxic T cell binds to the MHC markers on the transplanted cells and recognises it as non self, where it is destroyed. They destroy anything, as long as it's a cell (eg. cancer cells, viral infected). Normally, in the person's body (from where the transplant came from), there would be no response since the MHC markers are theirs, but in a different person, it is not recognised as self and therefore tissue rejection happens. 

[anat0my]

Predicted cut off anyone?

[dankfrank420]

Predicted cut off anyone?

87-88

[Aman476]

QUESTION 12 MC ahahaha??

[Coralista]

87-88

Since this years exam was clearly harder than last years, do you guys think this will lead to an increase in scaling as well?

[Deshouka]

Since this years exam was clearly harder than last years, do you think this will lead to an increase in scaling as well?

but wouldn't that assume that the other exams were easier than?

[dankfrank420]

Since this years exam was clearly harder than last years, do you think this will lead to an increase in scaling as well?

Possibly, but its been stuck at +1 for the past few years. If it is going to go up, I'd only be by +2.

[anat0my]

87-88

Wasn't last years cut off ~85%? Why would it be higher if was harder? :S

[grannysmith]

Since this years exam was clearly harder than last years, do you think this will lead to an increase in scaling as well?

probably not. depends on cohort strength.

but yeah i agree with dankfrank420's estimate

[Reus]

Wasn't last years cut off ~85%? Why would it be higher if was harder? :S

I'm guessing it's 88/110

[Coralista]

Possibly, but its been stuck at +1 for the past few years. If it is going to go up, I'd only be by +2.

Yeah that's true!

Wasn't last years cut off ~85%? Why would it be higher if was harder? :S

Last years cut off was around 93 I believe, as in 93/110

[Reus]

What did everyone write for the ZZ and ZW chromosome question?

[dankfrank420]

What did everyone write for the ZZ and ZW chromosome question?

Z^R Z^r X Z^r W

ceebs typing it out, but thats the cross i did

[soNasty]

What SS Am i looking at if i get a low A+ with A+ sacs and rank 1?

[Sup]

Can anyone explain question 12 of MC?