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

    11
    ReputationRep:
    (Original post by Zx12r1)
    In all the catalase decomposition questions I've done the control was boil potato to denature enzyme it even said this on the sample paper but I suppose there could've been many controls
    I second this
    Offline

    11
    ReputationRep:
    (Original post by examhater44)
    Guys, listen for the control experiment the answer could have been to substitute a test tube of hydrogen peroxide for a test tube of water. In fact it is the preferred answer!!!
    Ive never seen this on a mark scheme I could be wrong though
    Offline

    2
    ReputationRep:
    Gguys what did u put for a safety precaution when handling ethanol??
    Offline

    14
    ReputationRep:
    (Original post by examhater44)
    Gguys what did u put for a safety precaution when handling ethanol??
    I put 2 things down firstly that wear safety goggles since it is an irritant and then since ethanol is organic never heat with bunsen burner since it is flammable

    What did everyone else put?
    Offline

    1
    ReputationRep:
    (Original post by Zx12r1)
    I put 2 things down firstly that wear safety goggles since it is an irritant and then since ethanol is organic never heat with bunsen burner since it is flammable

    What did everyone else put?

    Put the exact same thing except I said safety google and lab coat not just safety googles.
    Offline

    13
    ReputationRep:
    (Original post by examhater44)
    Yea thats the point xD
    Biology teacher said water is right
    Fair enough, might be right then.
    Offline

    0
    ReputationRep:
    I put those at first but i dont think they link at all u melt. Because number of bubbles dont link to volume in gas syringe
    • Thread Starter
    Offline

    6
    ReputationRep:
    (Original post by Kailum ni1gga)
    I put those at first but i dont think they link at all u melt. Because number of bubbles dont link to volume in gas syringe
    There would be some correlation to the volume of gas though, just not an accurate one.
    Offline

    0
    ReputationRep:
    So if i drew the diagram exactly how it looked on the paper will i get any marks at all?
    Offline

    11
    ReputationRep:
    (Original post by lin-e)
    There would be some correlation to the volume of gas though, just not an accurate one.
    This has appeared in previous mark schemes, gas syringe is fine
    Offline

    11
    ReputationRep:
    (Original post by XCharlotteDoyleX)
    So if i drew the diagram exactly how it looked on the paper will i get any marks at all?
    I think you might lose one or two, its not like you lose all the marks, some marks you get if you drew some random circle
    Offline

    11
    ReputationRep:
    (Original post by juannypacquiao)
    Put the exact same thing except I said safety google and lab coat not just safety googles.
    It asked for one in bold
    Offline

    14
    ReputationRep:
    (Original post by XCharlotteDoyleX)
    So if i drew the diagram exactly how it looked on the paper will i get any marks at all?
    It was worded very badly dont worry i did the exact same thing we will only lose 1-2 marks MAX since most of the marks come from size, label, overall shape etc.
    Offline

    14
    ReputationRep:
    (Original post by 123Master321)
    It asked for one in bold
    You can't get penalised for putting 2 things that are correct down however they will only mark the first thing you put.
    Offline

    2
    ReputationRep:
    For the safety one, I put wear safety googles and gloves
    Offline

    0
    ReputationRep:
    (Original post by 123Master321)
    I think you might lose one or two, its not like you lose all the marks, some marks you get if you drew some random circle
    ah I really hope so, five marks is such a large chunk!
    I know it wont be accurate, but what would you guys think the garde boundary would be for an A?
    would you say it was a hard paper?
    Offline

    0
    ReputationRep:
    (Original post by Zx12r1)
    It was worded very badly dont worry i did the exact same thing we will only lose 1-2 marks MAX since most of the marks come from size, label, overall shape etc.
    thankyou so much so worried, i absolutely have to get at least a B overall and i really panic in exams
    Offline

    0
    ReputationRep:
    Yeah, I got stuck on the table tbh I know it was easy looking back, but hey :/
    The phloem and xylem thingy was easy I thought? Just the xylem + phloem cells were the holes.
    For the last question I just put it clear and simple, something like: "The lignin will take up the red dye through the xylem, so place the shoot in a beaker of water, leave for a few hours, come back, cut the stem with a scalpel, and look for a stain. The stained areas are the xylem vessels." Tbh, I didn't really know - I took a while on the table thing. But it was easier than I thought
    Offline

    0
    ReputationRep:
    (Original post by XCharlotteDoyleX)
    So if i drew the diagram exactly how it looked on the paper will i get any marks at all?
    Yeah, you'd get marks for showing the different segments of the vascular tissue. But it did say not to draw in individual cells...
    Offline

    14
    ReputationRep:
    (Original post by IWriteNovels)
    Yeah, you'd get marks for showing the different segments of the vascular tissue. But it did say not to draw in individual cells...
    Tbh it was open to interpretation. Individual cell could mean dont draw one xylem cell and one phloem cell and then start labelling all the internal features of that...
 
 
 
  • 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
    Would you like to hibernate through the winter months?
  • 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.