Biology GCE Unit 2 - 3rd June Thread watch

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1 - questions..
If you have any questions about content or anything at all, ask away I will be more than happy to help, if you feel like your under pressure just relax, take a breath and come to me, think of me as your free online tutor..

2 - everyone to share revision tips..
Share your last minute revision tips with everyone, help someone else out, answer a question if it unanswered.

I may take a while to reply but I will try my best to reply as question as I can.

Good luck guys!
Check out my other thread for similar exams next week.
http://www.thestudentroom.co.uk/show....php?t=2367560
3. (Original post by Prista)
http://www.thestudentroom.co.uk/show....php?t=2367560
Okay do you have the year of this paper, and question number, I'd like to see the whole thing.
4. (Original post by doctordee)
Okay do you have the year of this paper, and question number, I'd like to see the whole thing.
Its june 2011, unit 2 AQA question 4)b)ii)
5. (Original post by Prista)
Its june 2011, unit 2 AQA question 4)b)ii)
Well it requires 3 cell cycles.
In minutes 4 hours 18 minutes is 240 + 18 = 258.

So 258 x 3 = 744 minutes.

This is because there are two cells produced at the end of every cycle.
So by telophase two cells are made.

Now these two cells undergo mitosis again. Now four cells are produced as the two cells will produce double their original amount.

Then in the third circle the four cells will double and make eight cells.

So you know it is three cycles.
Now one cycle is 258 minutes.
So 258 (one cycle) x 3 (cycles) = 744 minutes.

You could convert it into hours which would be 12 hours and 54 minutes but I would stick to 744 minutes if I were you, just to be safe.

Yes a lot of thinking for this question but this question is aimed at a students and will get you thinking on your feet.

Let me know if I got the right answer.
6. (Original post by doctordee)
Well it requires 3 cell cycles.
In minutes 4 hours 18 minutes is 240 + 18 = 258.

So 258 x 3 = 744 minutes.

This is because there are two cells produced at the end of every cycle.
So by telophase two cells are made.

Now these two cells undergo mitosis again. Now four cells are produced as the two cells will produce double their original amount.

Then in the third circle the four cells will double and make eight cells.

So you know it is three cycles.
Now one cycle is 258 minutes.
So 258 (one cycle) x 3 (cycles) = 744 minutes.

You could convert it into hours which would be 12 hours and 54 minutes but I would stick to 744 minutes if I were you, just to be safe.

Yes a lot of thinking for this question but this question is aimed at a students and will get you thinking on your feet.

Let me know if I got the right answer.
Yeah it's the right answer, I understand it now. Thank you very much!
7. (Original post by Prista)
Yeah it's the right answer, I understand it now. Thank you very much!
No problem,
If you have any other questions feel free to ask.
8. (Original post by doctordee)

1 - questions..
If you have any questions about content or anything at all, ask away I will be more than happy to help, if you feel like your under pressure just relax, take a breath and come to me, think of me as your free online tutor..

2 - everyone to share revision tips..
Share your last minute revision tips with everyone, help someone else out, answer a question if it unanswered.

I may take a while to reply but I will try my best to reply as question as I can.

Good luck guys!
Check out my other thread for similar exams next week.
Hey!

Could you please help me to work out the index of biodiversity using the Simpsons's formula. I needed help on question 7bi on the June 2012 paper, it is about the index of biodiversity.

Thanks!
9. (Original post by Nav_Mallhi)
Hey!

Could you please help me to work out the index of biodiversity using the Simpsons's formula. I needed help on question 7bi on the June 2012 paper, it is about the index of biodiversity.

Thanks!
May I ask what the Simpson's formula is or is it provided in the formula.
10. (Original post by doctordee)
May I ask what the Simpson's formula is or is it provided in the formula.
Its provided on the paper, just below the question.
11. Sorry guys, really busy at the moment, trying to answer all questions.
I won't be free today to reply to anyone but I will be free tomorrow to help anyone and answer any topic related questions.
So I will be free for Saturday and the day before the exam.
Other than that I won't.
Please do not inbox me requests, I would rather they were displayed on the thread as it takes a long time for me to reply personally and repeat it for everyone when I could say it here and help 5 people at once.

Remember, thumbs up if you'd like me to do a prediction paper or do prediction topics.
I will get it up a day before the exam at latest if a lot of people want me to do it.

I will not be much use on other threads, if you need me come to this thread as I made this one and it is a lot calmer than the others. Easier to see things too.
12. Is this thread for any exam board in particular or just all in general? I'm on WJEC board, a majority of others are on AQA/Edexcel! Thanks
13. Can someone help me with these two questions - q2b / q4a

http://web.archive.org/web/201006020...W-QP-JUN09.PDF

http://web.archive.org/web/201006020...W-MS-JUN09.PDF

I just dont get them. For q2b I know that only one strand of the DNA is coded but why? Q4b has made me go crazy!
14. (Original post by doctordee)

1 - questions..
If you have any questions about content or anything at all, ask away I will be more than happy to help, if you feel like your under pressure just relax, take a breath and come to me, think of me as your free online tutor..

2 - everyone to share revision tips..
Share your last minute revision tips with everyone, help someone else out, answer a question if it unanswered.

I may take a while to reply but I will try my best to reply as question as I can.

Good luck guys!
Check out my other thread for similar exams next week.
Hey are you posting your predictions today?

Posted from TSR Mobile
15. (Original post by SchoolKid.)
Can someone help me with these two questions - q2b / q4a

http://web.archive.org/web/201006020...W-QP-JUN09.PDF

http://web.archive.org/web/201006020...W-MS-JUN09.PDF

I just dont get them. For q2b I know that only one strand of the DNA is coded but why? Q4b has made me go crazy!
4(a) One strand is complementary to the other ie G with C and A with T. So think of them as pairs not "one strand of the DNA is coded". The pairs together in the triplet code code for the amino acid.

4(b) If the gene that codes for the protein p53 has mutated, then there is a different sequence of bases, and consequently a different sequence of amino acids in the protein primary structure so no p53 is made - a different protein or a non functional one for example. The cell(s) have no p53 so they undergo mitosis/they divide. The lack of p53 means that the cell cycle doesn't stop. There is continuous cell division. Thisuncontrolled cell division produces cancer.
16. Sorry guys,
Been very ill so I can't post the predictions as I didn't have time to do them.
But if you have any questions about Biology or a past paper question you don't understand,
Private message me and I will try my best to help and respond in time.
17. I just don't get one annoying little thing:
How many different genera are shown in this diagram?

I've attached both questions - I understand the order of classicication, i just don't know what im counting!

Any help is appreciated,

18. (Original post by Razer_M)
I just don't get one annoying little thing:
How many different genera are shown in this diagram?

I've attached both questions - I understand the order of classicication, i just don't know what im counting!

Any help is appreciated,

Your counting how many different "first names" there are.
19. I knew it would be so simple Thank you!
20. (Original post by eddyf)
Hi I was just wondering what Independent assortment was and what kind of questions they could ask on it in the Biol2 paper? Much Thanks

Independent assortment is the random assortment of chromosomes during the production of gametes, the results are genetically unique individual gametes. Many people know it better as independent segregation. You will only be expected to know that this increases genetic variation.

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