AQA A Level Biology Paper 2 7402/2 - 17 Jun 2022 [Exam Chat]

Reply 860

marie207

9

Original post by Alpacalover1

Okay! Better than paper 1 :smile:

Although, the 5 marker on speciation was unexpected 😳

Yesss and I didn’t like the gene therapy one either 😭

Reply 861

othello03

10

Original post by lafifa007

What did people write for why the blood test for prostrate isn’t conclusive

the information told you that a urine infection or naturally enlarged prostate would also produce the prostate specific antigen. so i said a positive result might also indicate iron infection or naturally a enlarged prostate, is not necessarily indicative of prostate cancer

Reply 862

tansrr

11

Original post by a_random_sapien

No, it’s increase in methylation of the tumour suppressor gene so tumour suppressor proteins are not translated so cannot stop cell division

You were meant to write about it in terms of how the drug stops methylation. I wrote increased methylation of tumour suppressor gene leads to uncontrollable cell division. The drug inhibits enzymes that cause methylation so decreased methylation of tumour suppressor gene. RNA polymerase and transcription factors can now bind to gene and translate it, leading to production of tumour suppressor gene to regulate cell cycle and stop uncontrollable mitosis

Reply 863

pandalovesyouu

15

Was it only me who got 0.0625 on the probability question? I think it’s cuz I messed up part 1 because I said parent 1s allele for blood is Ia Io

Reply 864

yeetew

5

What did people write for the fill in the gaps question

Reply 865

marie207

9

Original post by metdog

i put the same althought i suppose you could also say independant segregation

I put small sample size and random mutation- do u think that’s wrong?

Reply 866

webegg

12

Original post by yeetew

What did people write for the fill in the gaps question

organic compounds, ........, carbon, caloimetry

Reply 867

AJTEM7

1

I put 88500 for the cow one and now I’m really thinking I copied it off my calculator wrong. Did anyone else get 88500?

Reply 868

bigjelly

7

Original post by Cam2468

Sample size is small
Random fusion of gametes?

It said in the question that it was a LARGE sample size

Reply 869

username5898007

10

Original post by AJTEM7

I put 88500 for the cow one and now I’m really thinking I copied it off my calculator wrong. Did anyone else get 88500?

Yeah

Reply 870

webegg

12

Original post by AJTEM7

I put 88500 for the cow one and now I’m really thinking I copied it off my calculator wrong. Did anyone else get 88500?

yess dw something with 8s and 5s and some 0s

Reply 871

jesuslovesyou123

3

meee

Original post by AJTEM7

I put 88500 for the cow one and now I’m really thinking I copied it off my calculator wrong. Did anyone else get 88500?

Reply 872

AJTEM7

1

Original post by webegg

yess dw something with 8s and 5s and some 0s

Lavely

Reply 873

Ghpvjobpj

6

Original post by tansrr

You were meant to write about it in terms of how the drug stops methylation. I wrote increased methylation of tumour suppressor gene leads to uncontrollable cell division. The drug inhibits enzymes that cause methylation so decreased methylation of tumour suppressor gene. RNA polymerase and transcription factors can now bind to gene and translate it, leading to production of tumour suppressor gene to regulate cell cycle and stop uncontrollable mitosis

Do u think it matters what way round? I said get a drug that stimulates enzymes involved in increased acetylation of associated histones, so less tightly associated so tumors suppressor Genes can be reactivated and transcription can occur?

Reply 874

Macdeez44

9

Omg I forgot to covert it from Millions hahaha do got like 0.00806 something like that lol

Reply 875

yeetew

5

Original post by webegg

organic compounds, ........, carbon, caloimetry

For the one u left a gap for I put translocation

Reply 876

Ghpvjobpj

6

Original post by AJTEM7

I put 88500 for the cow one and now I’m really thinking I copied it off my calculator wrong. Did anyone else get 88500?

I put that too

Reply 877

othello03

10

Original post by Ghpvjobpj

Do u think it matters what way round? I said get a drug that stimulates enzymes involved in increased acetylation of associated histones, so less tightly associated so tumors suppressor Genes can be reactivated and transcription can occur?