Higher Biology 2016/2017

Posted from TSR Mobile

Thank you so much that's a great help :smile:

Reply 84

Posted from TSR Mobile

Yeah I doubt they could even ask u about prisoners dilemma as it's just a way of exemplifying altruism and isn't really 'scientific'

Reply 85

You know on a question where it says give one or two examples etc and u give more than they say to give but they are all correct will you still get the marks?

Reply 86

eve_4342

12

I would really appreciate some help with this question! I guessed it for the second value of the diploid number so I got B but the answer is D. How do you get D?

Reply 87

studycloud

1

Original post by eve_4342

I would really appreciate some help with this question! I guessed it for the second value of the diploid number so I got B but the answer is D. How do you get D?

So you got the first part because of the total non-disjunction the spindle fibres didn't fully separate which means you add the chromosome numbers together and for the second one, the same thing happens again and the result is a cell with diploid number 42, so the answer for the second part would be 42-28 which is 14 :smile:

Reply 88

eve_4342

12

Original post by studycloud

So you got the first part because of the total non-disjunction the spindle fibres didn't fully separate which means you add the chromosome numbers together and for the second one, the same thing happens again and the result is a cell with diploid number 42, so the answer for the second part would be 42-28 which is 14 :smile:

Thank you thank you!!!

Reply 89

Jaismith

5

Anyone got any predictions for the essay questions this year?

Reply 90

Original post by ballsagitarius

i don't think you need to explain prisoners dilemma as an example. For a 4 mark question.
Just define altruism, then talk about reciprocal altruism and give an example such as regurgitating blood in vampire bats.
Next define kin selection, and then give an example of this, in social insects such as bees. There are few fertile individuals and many sterile workers.

Original post by Puppo

Posted from TSR Mobile

Yeah I doubt they could even ask u about prisoners dilemma as it's just a way of exemplifying altruism and isn't really 'scientific'

Oh okay, thank you. I don't really understand how the prisoners' dilemma has to do with altruism so I hope it won't come up.

@Puppo I'm glad my notes helped :smile:

Reply 91

KyleJDougall

1

Original post by Jaismith

Anyone got any predictions for the essay questions this year?

I'm putting money on a gene expression one popping up

Reply 92

Original post by KyleJDougall

I'm putting money on a gene expression one popping up

To me, that would seem like a decent question

Reply 93

Would you talk about transcription translations and types of rna? Would you talk about alternative rna splicing and post translational modification as well?

Reply 94

Original post by Puppo

Would you talk about transcription translations and types of rna? Would you talk about alternative rna splicing and post translational modification as well?

They would tell you to write under specific headings, usually 2 headings, e.g. "Write notes on gene expression under the following headings:
a). Transcription x marks
b). Translation y marks"

But you could also mention how the mature mRNA transcript is spliced before undergoing the process of translation however, I don't think post translational modification would be necessary to write about since it didn't specifically asked you to write about the ways as to how one gene may give rise to several proteins.

Ultimately, it all really depends on what the question asks.

Reply 95

How much time are you meant to spend on the essay question? Is it not supposed to be 30 min?

Reply 96

Posted from TSR Mobile

Ah right thanks hopefully it'll be pretty clear what to write and maybe 5 mins on 4 marker and 10-15 on 9 marker as it's something like 1.5 mins per mark when you break it down

Reply 97