Hey there! Sign in to join this conversationNew here? Join for free
    Offline

    2
    ReputationRep:
    (Original post by anonymous_angel_16)
    s**t! i wrote about trapped air but then i crossed it out and wrote a whole load of nonsense! instead, i wrote about how the bottom part is dead so it cant transport air therefore we cut off the dead part aggh
    Yeah I put the same load of nonsense. I feel so stupid now reading what everyone else has put
    Offline

    1
    ReputationRep:
    (Original post by anonymous_angel_16)
    s**t! i wrote about trapped air but then i crossed it out and wrote a whole load of nonsense! instead, i wrote about how the bottom part is dead so it cant transport air therefore we cut off the dead part aggh
    xylem elements are always dead though?
    Offline

    0
    ReputationRep:
    I HATED THIS EXAM HOW CAN NOTHING COME UP ON THE HEART AND I THOROUGHLY REVISED IT AND WAS EXPECTING IT TO COME I feel like this is an exam I'm going to have to retake
    Offline

    2
    ReputationRep:
    (Original post by Silly Goose)
    I was not pleased with that paper. It's as if OCR designed the paper to specifically target the weak points in my revision. <_<
    lol, same here! I concentrated mainly on the heart and lungs and not at all on plants
    Offline

    2
    ReputationRep:
    (Original post by CullenLoverX)
    xylem elements are always dead though?
    yeah, i realised that after the exam lol
    i just was't thinking straight
    i really think i did bad
    Offline

    2
    ReputationRep:
    (Original post by DonFahad)
    Erm, well, it was alright tbh. There were a lot of sneaky/disguised questions, and I just plain didn't know the facts in some. My teacher's predictions were absolute spot on though, she said unlikely to be anything on heart, lymph, or vessels. As well as saying that plant transport would feature heavily (it was 14/60 marks, more than anything else), and telling us exactly the answer to the 'why would you cut the end of the stem off'. I however, didn't know properly the answer to the last part of qu1 (diff between animals and plant cell division - i just scribbled something about meristems and bone marrow or something), and I was slightly unsure on a few others. Hopefully full UMS, but I dunno. Wbu, how did the tutor do ?

    also, about the answers, has noone managed to get a copy of the exam paper and post the answers here?
    Haha tutor! Erm yeah similar response to yours i guess.. i found the paper relatively ok but just that question on some bunch of flowers which god knows what i wrote.. all wrong.. and that question on "how to construct a graph" i mean im just sat there staring at the question.. so vague! I was so confused and had nothing to write i wrote draw line of best fit.. but crossed it out 'cos thats just pushing it! .. yeah i wrote meristem cells and that cell division happens by forming a cell plate in equator region or something..

    Nope not heard of anyone yet.. would be good if someone does though. How would someone get hold of the paper though?
    Offline

    0
    ReputationRep:
    (Original post by thesalamander123)


    No, let's settle this, it was definitely a bronchiole, the order goes:
    Trachea
    Bronchi
    Bronchioles
    Alveoli

    http://en.wikipedia.org/wiki/Bronchiole
    http://en.wikipedia.org/wiki/Bronchus
    It can't be bronchiole because the alveoli weren't relative in size if it were a bronchiole!
    Offline

    2
    ReputationRep:
    (Original post by Rassam)
    It can't be bronchiole because the alveoli weren't relative in size if it were a bronchiole!
    But a bronchiole is what is attached to the alveoli right? This is so confusing!
    Offline

    0
    ReputationRep:
    (Original post by CullenLoverX)
    LOL at everyone getting worked up about 2 mark questions.

    to all the newbies, welcome to TSR :rolleyes:
    Location Slough, you blates go to Slough Grammar
    Offline

    2
    ReputationRep:
    (Original post by anonymous_angel_16)
    lol, same here! I concentrated mainly on the heart and lungs and not at all on plants
    Same I spent SOOOOOOOO long on the phloem and it was all about the xylem
    Offline

    19
    ReputationRep:
    Ah, I mucked up that question about the cutting the stem -> into water. Waffled on about how a constant supply of water is needed, so if no water's getting in, cells die (something like that, can't remember). Totally forgot about air bubbles and having to have a continuous water column up the xylem ):<
    Offline

    2
    ReputationRep:
    on the one about transpiration in water transport what did people put.

    oh and the last one about accuracy and reliability
    Offline

    2
    ReputationRep:
    (Original post by DonFahad)
    Soz mate, you've got it wrong. My biology teacher (must be the best in the country, predicted absolutely everything right on the paper, one of the questions word-for-word), said the following;

    One mark for plain diffusion/osmosis through the cell membrane, as water molecules are very small. However, the second mark, will be for mentioning channel proteins, as water molecules, however small, are actually charged, and so a channel protein lets through molecules that are charged. Remember that the Phosphate heads are actually hydrophobic, and that there is a chance that a water molecule could hit that and be repelled. As a result, there are channel proteins that open for water molecules to leave.

    The apoplast and symplast pathways are irrelevant to the cell surface membrane. They are relevant to how water, taken in at the roots, reaches the xylem cells.

    As it happens, I only got the first mark, but think about it, they cannot expect you to explain the apoplastic and symplastic pathways, as well as an explanation of diffusion in two lines and two marks. Even if you somehow managed to fit it in, it is irrelevant because nowhere in the question does it mention that. It mentions cell surface membrane, ie, the plasma membrane, not the symplastic and apoplastic pathways, which go through a number of cells, membranes and plasmodesmata.
    Just gave you a rep! You made me feel so relieved! I think you should do alot more talking!!
    Offline

    0
    ReputationRep:
    magnification 4500x?
    Neutrophil question?
    alveoli answer was Bronchi wasnt it?

    accuracy and reliability question?
    for the accuracy i wrote let someone else look at the number of plasmolysed cells.
    For the reliabilty i said repeat 3 times and take an average to be able to identify anomolous results
    • PS Reviewer
    Offline

    16
    ReputationRep:
    (Original post by MiriiJungle)
    Ahh this is such a huge thread, and my PC is realllyyy slow! So I was wondering what everyone answered for the "how transcription helps water movement up the plant" and "neutrophils" questions.

    Cheers guys!

    you mean translocation? or transpiration? XD transcription is to do with dna
    i think you mean the transpiration one, i put about the water potential gradient going down at the leaves because of the stomata constantly evaporation water into the outside environment creating the constant transpiration pull of water molecules from the soil, up through the roots, through the xylem and into the leaves.
    (well basically, i think i put something else but icr!)
    and then with the neutrophils i said about them having lysosomes for when they engulf foreign substances, as they fuse with the plasma membrane so they can digest them. and then i said that the glycoproteins on the plasma membrane work with cell recognition and cell signalling. the carbohydrate chains on the glycoproteins work as receptors to detect the target cell.
    (again, can't remember it full, something along those lines XD)
    Offline

    2
    ReputationRep:
    (Original post by pastpaper-guy)
    magnification 4500x?
    Neutrophil question?
    alveoli answer was Bronchi wasnt it?

    accuracy and reliability question?
    for the accuracy i wrote let someone else look at the number of plasmolysed cells.
    For the reliabilty i said repeat 3 times and take an average to be able to identify anomolous results
    I agree with magnification.
    Neutrophil: stuff about granular cytoplasm (lots of enzymes), got lots of lysosomes, able to bend membrane to engulf etc.

    But for bronchus and bronchiole debate look at this image

    http://www.google.co.uk/imgres?imgur...w=1024&bih=677
    Offline

    0
    ReputationRep:
    (Original post by Laura5494)
    I made up a bunch of rubbish for this question :/
    Pun intended?
    Offline

    0
    ReputationRep:
    WHAT ABOUT the question that went something like;

    'why do those flowers whose stems have been cut just before before they are put into water grow better' or something

    wtffffffffffffffffffff!
    Offline

    2
    ReputationRep:
    (Original post by OwenFerny)

    So like, why the hell was there nothing on the heart or anything!? That is so frutrating. I really prepared for that lol.

    Anyone else seem to run out of time and go on a mad rush at the end, JUST finishing? (I hope)
    completely agree
    Offline

    2
    ReputationRep:
    (Original post by taunt)
    OMG thankyou
    ur a life saver

    gud luck for exam tomorow lol
    aww no problem glad it helped, wish it came up though!! :|
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Will you be richer or poorer than your parents?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • 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.