CGPwned: Your Edexcel IGCSE Biology Notes!

Here are the notes for biology! This revision guide includes

  • Material from the 2009 Edexcel syllabus - plus the triple science statements (i.e. single biology)
  • Topics such as plants, the heart, the kidneys, eutrophication - you name it!
  • Tips from an awesome teacher plus former examiner
  • And lots more!

Well what can I say? GO GET YOUR A*/As! Revise well, prepare well, practise pastpapers, learn what the examiners want and your A* will come to you!:) Hope this helps!

Update #1: Added more on fungi - about how it digests the organism outside the body and how it secretes extracellular enzymes; Added a section on bioaccumulation and biomagnification; Added a section on the disadvantages of GM crops because that appeared on the sample assessment:)

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  • Created by: cgpwned
  • Created on: 14-03-12 13:14

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Page 1

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CGPw ned
Bi
ology








I
G CSE
Biol
ogy
Fr
om
the
Edexcel
I
G CSE
2009
Syl
l
a bus
incl
udi
ng
tr
ipl
e sci
ence
stat
ement
s




C GPwned
Wh en
Biol
o gy
and
C GP
books
get
pwned...










Page 2

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CGPw ned
Bi
ology



Uni
t
1:
H uman
Biol
ogy

T here
ar e
mill
i
o ns
of
dif
ferent
plants
a nd an i
ma ls i
n t
he wo rl
d.
T o
ma ke
it
ea sier
t
o i
d en t
if…

Page 3

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CGPw ned
Bi
ology




Senses

Growth

Reprodu c ti
on

Excr
eti
o n

Nut
ri
ti
o n

* Note:
Vir
uses
are
N OT l
ivi
ng t
hings.
They
d o
not
f
eed,
respi
re,
excr
ete,
move,
grow or
respond
to
thei
r
s urr…

Page 4

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CGPw ned
Bi
ology




Wa t
er
ma kes
up t
he bul
k of
t
he cyt
oplasm.
I
t
takes
par
t
in
the
ma ny
chemical
r
eact
ions
happ eni
ng i
nsi
de
th e
cyt
oplasm.
Salt
s of
pot
assium,
sodi
u m,…

Page 5

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CGPw ned
Bi
ology




T he
test
f
or pr
otei
n i
s cal
led
the
B i
uret
t
est.
I
t
is
done by
fi
rst
ly
mixi
ng
some pr
otei
n such
as power
ed egg whi
te
to
s ome water
.
The n,…

Page 6

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CGPw ned
Bi
ology




Changes
in
pH
alt
er
an enzyme's
shape.
Dif
fer
ent
enzyme s
w or
k best
at
dif
fer
ent
pH val
ues.
The
opt
imum pH
for

an
enzyme depends on
w her
e i
t
normal
ly
w or
ks.
For
examp l…

Page 7

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CGPw ned
Bi
ology



a l
ong.
Wh en one
layer
contract
s, the ot
her r
elaxes.
Wa v es
of
mu scl
e
contr
acti
o n
li
ke t
his
is
w hat
helps
p ush
food
a l
ong.
This
is
call
ed peri
stal
si…

Page 8

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CGPw ned
Bi
ology




Measur
ing
Ener
gy
C ont
ent
i
n Food
­ Such
as
a Peanut
!

I f
a
samp l
e o f
food
w i
ll
burn
w el
l
in
air
, yo u can
me asure
it
s ener
g y
con…

Page 9

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CGPw ned
Bi
ology



Ventilation ­ The Gruesome Details

V en t
il
ati
on requi
res a
dif
ference
in ai
r pr
essu r
e.
Wh en you i
nhale,
t
h e
int
ernal
int
er costals

mu scl
es mo ve
your r
ibs
ou t…

Page 10

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CGPw ned
Bi
ology




N ote:
Surfact
ant i
s a
chemical
that
keeps
lungs
mo i
st.
When
air
i
s exhal
ed,
l
u ngs
get
dri
er
as water
escapes.

T heref
ore ,
t
o st
op t
h e
lungs
fr
om coll
apsing,
t…

Comments

yousra

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this is absolutely fantastic and just saved my life. thank you :)

Pond

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thank you so much for posting this for us! God bless

Hannah

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thank you

srinivasa

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Excellent !

solomon11

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So this is also for triple science??

Thank you in advance

boris2002rifa

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please let me know if u have these notes for other subjects.

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