Year 12s: what will be the first way you research your future options? >>

IGCSE Edexcel Biology - Paper 1

Scroll to see replies

what did you guys write for those yield question of why dry mass instead of fress mass and why % instead of that kg m s something?

I said because dry mass included water, which has nothing to do with actual plant tissue production, and that percentages were easier to compare or something like that...

Posted from TSR Mobile

Reply 81

samanthaclarkson

Original post by rutabaga

what did you put for systems?

central nervous
digestive
respiratory

Reply 82

yupppp89

Original post by samanthaclarkson

glycogen i think

ahhh nooo - i wrote glucagon instead of gylcogen for both

Reply 83

Ibrahim Rampuri

Original post by minmaxe

Could you write mushroom for a type of fungus xD?

yea you can

Reply 84

rjw99

Original post by rutabaga

what did you put for systems?

respiratory system
digestive system
central nervous system

then for the one that wasnt shown on the diagram i put thermo-regulatory system but i think the right answer was reproductive system

Reply 85

samanthaclarkson

Original post by examswhizz

I said because dry mass included water, which has nothing to do with actual plant tissue production, and that percentages were easier to compare or something like that...

Posted from TSR Mobile

how did you obtain the dry mass of the fresh potatoes though?

Reply 86

HalaA9

Original post by PalwashaAyubb

what about that water lilies question?

I said it was under water so gases would not be able to diffuse.

Reply 87

minmaxe

Original post by Yuuchin1

lol i wasnt sure either- put toadstool (is that any better :redface:

)

Haha xD I totally blanked on yeast being a fungus (whoops)! Lets just hope I suppose mate ^.^

Reply 88

PalwashaAyubb

yeahh that question how can low supply of blood lead to heart attack?

Reply 89

Ibrahim Rampuri

Original post by samanthaclarkson

how did you obtain the dry mass of the fresh potatoes though?

i said you leave the potatoes in an enclsed container for several days untill all the water has evaporated and then you measure the mass

Reply 90

Yuuchin1

Original post by PalwashaAyubb

yeahh that question how can low supply of blood lead to heart attack?

less oxygen>less respiration> no energy> stops beating

Reply 91

Foreboding

Original post by samanthaclarkson

how did you obtain the dry mass of the fresh potatoes though?

I said you cut the tubers off the potatoes and dry in them a warm area for a day. Then measure them on an electronic balance

Reply 92

HalaA9

Original post by rutabaga

what did you put for systems?

I wrote immune but not sure if its right.

Reply 93

Yuuchin1

Original post by rjw99

respiratory system
digestive system
central nervous system

then for the one that wasnt shown on the diagram i put thermo-regulatory system but i think the right answer was reproductive system

probably there wont be any "right answer"
so many things you couldve put, including yours i think :wink:

Reply 94

PalwashaAyubb

guys now what do you think is on paper 2 we all need to get 50 + lol

Reply 95

Foreboding

For the systems question you could put 3 of the four:
Urinary
Respiratory
Digestive
Nervous

For the other one its reproductive

Reply 96

samanthaclarkson

for the question about whats in the testes and what does it do do you just write that its testosterone and promotes male secondary sexual characteristics eg deepening of voice?

Reply 97

rjw99

did anyone else feel that it wasnt like any of the past papers? in terms of question style and difficulty?

Reply 98

Yuuchin1

Original post by PalwashaAyubb

guys now what do you think is on paper 2 we all need to get 50 + lol

the thing we discussed on the way home is that there was a lot of experimental stuff in paper 1 and they can only attribute a certain total percentage to those type of qs, so there will be far less in paper 2