WJEC A2 Biology - BY4 (8th June 2015)

Original post by Rhetorical Hips

By B do you mean 70% raw marks or have you actually checked the UMS grade boundaries for that paper to confirm you actually would've gotten a B.

https://www.wjecservices.co.uk/MarkToUMS/

For some past papers, it's been like 70% raw marks for an A* (90%) in UMS marks.

Although from what you're saying I'm wondering if it's just been the papers I'm doing- I got 76% and 72% on the 2 most recent and they were both just a B

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Reply 42

Original post by crawfy

Although from what you're saying I'm wondering if it's just been the papers I'm doing- I got 76% and 72% on the 2 most recent and they were both just a B
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Fe, people must've done well that year if the grade boundaries are so high.

Reply 43

aLittleBookWorm

15

Does anyone know what the A* boundaries were in the June 2010 exams? The WJEC Grade Boundaries page only goes back as far as 2011, I found the A-E boundaries in an examiner's report but there was no mention of the A* - I know it's typically 90% but it does fluctuate a little (I know doing the papers id the most important thing but I'm trying to boost my confidence, suddenly very nervous about getting an A* for my uni offer :colondollar:

)

Reply 44

Original post by aLittleBookWorm

Does anyone know what the A* boundaries were in the June 2010 exams? The WJEC Grade Boundaries page only goes back as far as 2011, I found the A-E boundaries in an examiner's report but there was no mention of the A* - I know it's typically 90% but it does fluctuate a little (I know doing the papers id the most important thing but I'm trying to boost my confidence, suddenly very nervous about getting an A* for my uni offer :colondollar:

)

For BY4, it was 51 for a B and 57 for an A, So I imagine it would be around (57-51)+57=63 raw marks for an A*

Reply 45

aLittleBookWorm

15

Original post by Rhetorical Hips

For BY4, it was 51 for a B and 57 for an A, So I imagine it would be around (57-51)+57=63 raw marks for an A*

I was trying to estimate it from the other grades too (and I'm doing the same with a maths paper now) :') thank you!

Reply 46

PenToPaper

2

I do not really understand this point in the Teacher's Guide: "The carrying capacity is dependent on the availability of resources (which, therefore, act as density-dependent factors)."

What I don't understand is the part in brackets. Okay, now I understand now I've written this out. Will post it anyway! (The availability of resources act as density-dependent factors).

Reply 47

Populations and ecology are the worst part of the course anyway :smile:

Reply 48

Original post by Rhetorical Hips

Populations and ecology are the worst part of the course anyway :smile:

Ugh, for sure. Especially for the essay q.

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Reply 49

Original post by crawfy

Ugh, for sure. Especially for the essay q.

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As much as I like biology as a subject, biology exams are awful. Far more subjective than a maths exam when marking it! Although admittedly things like English and history have it worse.

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Reply 50

helloimbeth

Does anyone have the mark scheme for June 2014??

Reply 51

helloimbeth

So intraspecific competition is density dependent. Is interspecific competition density dependent or independent? :confused:

Reply 52

Original post by helloimbeth

So intraspecific competition is density dependent. Is interspecific competition density dependent or independent? :confused:

I would argue that it is, but then again I'm not the examiner. This is why I hate BY5 (the wishy-washy evolution, population and ecology bit at least).

I'll pray for all of us that there isn't too much of it in the exam :smile:

(edited 8 years ago)

Reply 53

Asfoi

2

Original post by helloimbeth

So intraspecific competition is density dependent. Is interspecific competition density dependent or independent? :confused:

interspecific and intraspecific competition both are density dependant factors as their effect varies/depends on the size of the population e.g- as the population increases, the competition for food/space/mates also increases. You probably won't get asked that so I wouldn't worry. Also if you still require the BY4 june 14 mark scheme then let me know I'll send it to you :smile:

Reply 54

Kealohi

1

Hi guys, can someone just confirm for me that the type of bacteria involved in respiring DOM in the carbon cycle is definitely SAPROBIONTS and not any other word... I am getting confused as I am seeing the words "saphrophytic bacteria" (nitrogen cycle), "sapribiotic bacteria" and "saprobionts" used everywhere and I can't figure out which one I am supposed to be using :frown:

Thanks

Reply 55

Asfoi

2

Original post by Kealohi

Hi guys, can someone just confirm for me that the type of bacteria involved in respiring DOM in the carbon cycle is definitely SAPROBIONTS and not any other word... I am getting confused as I am seeing the words "saphrophytic bacteria" (nitrogen cycle), "sapribiotic bacteria" and "saprobionts" used everywhere and I can't figure out which one I am supposed to be using :frown:

Thanks

Usually you only have to state breakdown of organic matter into inorganic by decomposing bacteria/fungi, which are in essence saprobionts or saprophytes (they both mean the same thing as far as I know, but it's better to use saprobionts). Hope this helps :smile:

Reply 56

Original post by Kealohi

Hi guys, can someone just confirm for me that the type of bacteria involved in respiring DOM in the carbon cycle is definitely SAPROBIONTS and not any other word... I am getting confused as I am seeing the words "saphrophytic bacteria" (nitrogen cycle), "sapribiotic bacteria" and "saprobionts" used everywhere and I can't figure out which one I am supposed to be using :frown:

Thanks

I've only been taught saprobiotic, but as the pp said, usually the mark schemes only require decomposing bacteria or ammonifying bacteria

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Reply 57