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Edexcel AS Biology Unit 3 9th May 2016 Official Thread

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ughhhh me too i was so damn nervous. i forgot to use the SD values in the q that says use all the informationyou have to .... GAAH :frown:

So did I! I just mentioned the invertebrate vs vertebrate and that time wasnt given, and for humans it increased and for daphnia it decreased. also the percentage i got was 11.9 percent for humans. Anyone else got that?

Reply 141

charlesdarwin

Why should daphnia be placed in the pond water?

Reply 142

charlesdarwin

Original post by bibliosmia

i also got 11.9!!

Reply 143

bibliosmia

Original post by charlesdarwin

Why should daphnia be placed in the pond water?

my friends wrote about ethanol being the one affecting the heart rate. I wrote smth like 30 mins for acclimatisation followed by placing in pond so that "fresh" vs "not fresh" pond water isn't a factor affecting heart rate. I guess I also had to write about fair/valid comparisons, but missed out on that.

Reply 144

Hiyoriiki

What was the main problem of the report?

Reply 145

Adorable98

Original post by Hiyoriiki

What was the main problem of the report?

I wrote przewalski's horse are at risk of extinction

Reply 146

charlesdarwin

the graph comparing inbreeding with amount of births? what do we had to write ?

Reply 147

Hiyoriiki

Original post by Adorable98

I wrote przewalski's horse are at risk of extinction

I wrote about their decreasing genetic diversity too

Reply 148

Pagarani Neelesh

so guys how many of you have chem unit 3 tom i dont seem to find the official thread

Reply 149

Hiyoriiki

Original post by Pagarani Neelesh

so guys how many of you have chem unit 3 tom i dont seem to find the official thread

Im trying to find it too😰

Reply 150

Saima Hasnain

Original post by bibliosmia

guys is 15 degree temperature okay for daphnia?

I'm not really sure, but usually it's between a range of 25 to 30 degrees

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Reply 151

Saima Hasnain

Original post by Pagarani Neelesh

so guys how many of you have chem unit 3 tom i dont seem to find the official thread

I've got chem🙋 and there is an official thread for it

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Reply 152

Saima Hasnain

This is the link to the chemistry thread:

http://www.thestudentroom.co.uk/showthread.php?t=4067903

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Reply 153

Komol

Original post by Saima Hasnain

This is the link to the chemistry thread:

http://www.thestudentroom.co.uk/showthread.php?t=4067903

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This is the unit 6 thread i guess cause its written "WCH06" which refers to unit 6...

Reply 154

Saima Hasnain

Original post by Komol

This is the unit 6 thread i guess cause its written "WCH06" which refers to unit 6...

Omg really, all this time I've been thinking its unit 3 🙈

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Reply 155

Komol

I guess this is the chem u3 thread http://www.thestudentroom.co.uk/showthread.php?p=55545351

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Reply 156

charlesdarwin

how do you guys predict the grade boundaries will be?
My guess:
A----32
B----28
C----24
D----21
E----17

Reply 157

A-Level Student-

Original post by charlesdarwin

how do you guys predict the grade boundaries will be?
My guess:
A----32
B----28
C----24
D----21
E----17

I really don't think so... As the Jan 2016 paper was -to me and my friends, a lot easier than this and the A was 28, so I'm guessing somewhere between there!