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
Preview of CGPwned: Your Edexcel IGCSE Biology Notes!

First 81 words of the document:

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...

Other pages in this set

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
y t
hem, we pl
a ce
them
into
dif
fe r
ent
groups.
Th ese groups
co ntai
n
organ i
sms
w ho se
charact
erist
ics
are
simi l
ar.…read more

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
ound i
ngs.…read more

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,
cal
ci
um and many
others
play
an
import
ant
r
o l
e i
n t
hese r
eacti
ons.
C a r
b ohy dr
ate Provi
des qui
ck energy.…read more

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,
di
lut
e pot
assium hydr
oxide
solut
ion
is
added t
o t
h e
mixt
ure.…read more

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
e, i
ntest
inal
enzymes
have an
opti
mum pH of
about
7.
5.
Enzyme s
in
the
stomach have
an
opti
mu m pH of
about
2.…read more

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
s.…read more

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 t
e nt
usi
ng a
simpli
fied ver
sion
of
the f
ood
c alor
imeter
.
1.…read more

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
w ar
ds. The ext
ernal
o nes contr
act,
pull
ing
the r
ibs
up .…read more

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
he sur
fact
ant
har
dens.
F i
nal
ly,
moist
ure
is
useful
as
it
speeds
d i
ff
usion.…read more

Comments

yousra

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

Pond

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

Hannah

thank you

srinivasa

Excellent !

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