AQA Biology AS New Spec - 26th May and 7th June

Announcements
    Offline

    1
    ReputationRep:
    This is what you had to do for the 4 mark graph, teacher confirmed it was correct. Joining it up to a curve or with a ruler didn't matter apparently.
    Name:  exam graph.jpg
Views: 509
Size:  31.4 KB
    Offline

    3
    ReputationRep:
    (Original post by CrazyFool229)
    I put that the tertiary structure could be the same but only the secondary structure may change as one was Alpha and one was Beta so they could have similar shaped active sites



    If the B Secretate was being inhibited then surely it means that there is a higher probability of the substrates forming an E-S Complex with A secretate and therefore form more of the A protein? I'm probably wrong
    how many marks would you lose for not realising that it was to do with secondary structure but instead putting protein has one part for active site of A, another site complementary to B, so ESC still form
    Online

    3
    ReputationRep:
    What did you guys write for why the image shows that it was scanning electron microscope question??

    I wrote it is a 3D image

    Also what did you guys write for why the image shows it is on cell surface membrane or something like that ?
    Offline

    2
    ReputationRep:
    (Original post by Lola1244)
    how many marks would you lose for not realising that it was to do with secondary structure but instead putting protein has one part for active site of A, another site complementary to B, so ESC still form
    No idea, but I could be wrong so don't be so certain that you lost marks!
    Offline

    3
    ReputationRep:
    (Original post by CrazyFool229)
    I put that the tertiary structure could be the same but only the secondary structure may change as one was Alpha and one was Beta so they could have similar shaped active sites



    If the B Secretate was being inhibited then surely it means that there is a higher probability of the substrates forming an E-S Complex with A secretate and therefore form more of the A protein? I'm probably wrong
    No, it said that, due to the mutation, the amount of a-secretate being formed decreased, and therefore, there would be accumulation of the substrate.
    Offline

    1
    ReputationRep:
    (Original post by jamiechristie)
    This is what you had to do for the 4 mark graph, teacher confirmed it was correct. Joining it up to a curve or with a ruler didn't matter apparently.
    Name:  exam graph.jpg
Views: 509
Size:  31.4 KB
    i put time on the x axia and rate of change on the y axis
    Offline

    1
    ReputationRep:
    (Original post by jamiechristie)
    This is what you had to do for the 4 mark graph, teacher confirmed it was correct. Joining it up to a curve or with a ruler didn't matter apparently.
    Name:  exam graph.jpg
Views: 509
Size:  31.4 KB
    How many marks was it for the table and graph
    Online

    3
    ReputationRep:
    Omg I thought rate is 1/time

    So for the table i did:

    1/ (value given /60) 😰

    Will i get any marks ?
    Offline

    2
    ReputationRep:
    (Original post by nav5678)
    i put time on the x axia and rate of change on the y axis
    yh i agree. the independant variable was time not mass
    Offline

    2
    ReputationRep:
    (Original post by nav5678)
    i put time on the x axia and rate of change on the y axis
    Sammmmeee

    What about how does the diagram show it's a cell membrane?
    Offline

    2
    ReputationRep:
    Mitochondria question - was it cristae or matrix?
    Offline

    2
    ReputationRep:
    Did it not say the B secretase also increased where the question said that the mutation led to A secretase decreased
    Offline

    1
    ReputationRep:
    (Original post by EggFriedRai)
    How many marks was it for the table and graph
    4 marks for the graph, 4 for the table? I think.
    Offline

    2
    ReputationRep:
    (Original post by lilyjacks)
    Mitochondria question - was it cristae or matrix?
    Cristae was the only word I could remember relating to mitochondria structure so that's what I put down.
    Offline

    1
    ReputationRep:
    (Original post by lilyjacks)
    Mitochondria question - was it cristae or matrix?
    I put cristae but not 100% sure, what did you put?
    Offline

    2
    (Original post by NimcoA)
    i cant remember half the questions. does anyone know what were the two ways in which you can use base sequences something like that
    i wrote dna hybridisation and immunological comparison however not sure if its right :/
    Wasn't it compare amino acid and mRNA?


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by saulgreen)
    I put cristae but not 100% sure, what did you put?
    I put matrix but couldn't decide between the 2
    Offline

    0
    ReputationRep:
    (Original post by Gswp)
    what was the second function of protein Y and how could you tell it was a cell membrane?
    For how could you tell, I said the cellulose spread out of the diagram, and its function was to act as an enzyme for that substrate, and the substrate became the cell wall
    Offline

    2
    ReputationRep:
    Does anyone remember what question preceded the one on mutation?
    Offline

    2
    ReputationRep:
    (Original post by Clintbarton)
    Wasn't it compare amino acid and mRNA?


    Posted from TSR Mobile
    I put that!
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: October 4, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Poll
Which is the best season?
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.