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OCR F211/F212 AS Biology Retake 2016 watch

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    For the lily question I put that I would do a stratified sample using a continuous belt transect using the environmental gradient from moist soil to dry soil. I would count all lily species within the quadrats and plot each number onto a graph to show how population of the lily changes with moisture change.

    Is that correct or??
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    For the question on the dichotomous key question, I wrote 'Does it have fertilised eggs that develop into blastula?'. Would that be correct?

    This paper was awful.

    Also on the last questions where you had to say why the statements were incorrect... I agreed with the statements LMAO?
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    What did people put for the questions you had to make up? I remember for one of the answers I wrote fungi (the top one)


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    what did people put for the benefits of preserving plant biodiversity for agriculture?
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    (Original post by Random573)
    What did people put for the questions you had to make up? I remember for one of the answers I wrote fungi (the top one)


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    fungi,
    does it have a chloroplast (plants and protoctists)
    does it have a true nucleus
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    I wrote does it gain nutrition autotrophically and heterotrophically for plants and protoctists
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    In the grid about primary & secondly response asking for speed and quantity of antibodies produced, what kind of this were we meant to put in the boxes?! Seemed a bit vague! I just put low & high kind of thing... 😖


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    (Original post by emsyp6)
    In the grid about primary & secondly response asking for speed and quantity of antibodies produced, what kind of this were we meant to put in the boxes?! Seemed a bit vague! I just put low & high kind of thing... 😖


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    i was the same haha just kept reading it waiting for some instructions to pop out of no where
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    For the fat question i wrote it would be a competitive inhibitor would that be right or is it competitive ? Please help
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    (Original post by 09ekennedy)
    what did people put for the benefits of preserving plant biodiversity for agriculture?
    - More pollinators
    - More genetic diversity/variation
    - More plant species
    - Higher quality soil e.g/ more nitrates in the soil
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    (Original post by emsyp6)
    In the grid about primary & secondly response asking for speed and quantity of antibodies produced, what kind of this were we meant to put in the boxes?! Seemed a bit vague! I just put low & high kind of thing... 😖


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    For primary I put: - Low for number of antibodies produced
    - Short (not sure if it was right)

    For secondary I put: - High
    - Long (again not sure if this was right)
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    (Original post by Lion2121)
    For primary I put: - Low for number of antibodies produced
    - Short (not sure if it was right)

    For secondary I put: - High
    - Long (again not sure if this was right)
    Good! I was just hoping we weren't meant to have learnt specific figures!!


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    (Original post by Random573)
    What did people put for the questions you had to make up? I remember for one of the answers I wrote fungi (the top one)


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    - Fungi
    - Does it feed autotrophically?
    - Does it have a true nucleus?
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    (Original post by Lion2121)
    - Fungi
    - Does it feed autotrophically?
    - Does it have a true nucleus?
    Would I get the mark for just saying does it have a nucleus? I didn't put true 😬


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    do you have to write 'true' nucleus because i just wrote nucleus
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    Think you'd probably get both true nucleus and nucleus
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    (Original post by Lion2121)
    For primary I put: - Low for number of antibodies produced
    - Short (not sure if it was right)

    For secondary I put: - High
    - Long (again not sure if this was right)
    I thought primary was longer than secondary due for the fact you don't have memory cells etc, but otherwise I got the same answer.


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    (Original post by GetOverHere)
    I thought primary was longer than secondary due for the fact you don't have memory cells etc, but otherwise I got the same answer.


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    Wasn't it the length of the immune response though?

    So I was thinking secondary response is faster than primary response due to memory cells, but secondary immune response lasts longer due to the antibody concentration staying higher for longer
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    (Original post by Lion2121)
    Wasn't it the length of the immune response though?

    So I was thinking secondary response is faster than primary response due to memory cells, but secondary immune response lasts longer due to the antibody concentration staying higher for longer
    It was the duration of the response I think. I was thinking that it was shorter because you've wiped out the infection quicker, so you don't need the prolong the response any further.



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    (Original post by GetOverHere)
    It was the duration of the response I think. I was thinking that it was shorter because you've wiped out the infection quicker, so you don't need the prolong the response any further.



    Posted from TSR Mobile
    Name:  IMMUNE RESPONSE.jpg
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    The whole duration of the secondary response is longer though.

    Primary response is 28 days
    Secondary response in +28 days
 
 
 
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