AS Biology revision checklist (OCR)

Revision checklist for AS biology unit 1 and 2.

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AS Unit F211: Cells, exchange and transport
Module 1 Cells
Done
Cell structure
St
ate
the
resol
uti
on and
ma gni
fi
cati
on
that
can
be
achieved
by
a l
i
g ht
mi
croscope,
a
t
ransmi
ssion
elect
ron
microscope
and
a scanni
ng
elect
ron
micr
oscope.
Expl
ain
the
dif
fer
ence
bet
w een
magni
fi
cat
ion
and
resol
uti
on.
Expl
ain
the
need
for
st
aini
ng
sampl
es
for
use
in
li
ght
and
elect
ron
micr
oscopy.
Cal
cul
ate
the
li
near
magni
fi
cat
ion
of
an
image.
Descr
ibe
and i
nter
pret
dr
aw i
ngs
and phot
ographs
of
eukary
o t
i
c cel
ls
as seen
under
an
elect
ron
micr
oscope and
be
able
to
recogni
se t
he f
oll
owi
n g
str
uctur
es:
nucl
eus,
nucl
eolus,
nucl
ear
envelope,
rough
and smooth
endopl
asmic
ret
icul
um,
G ol
gi
appar
atus,
r
ibosomes,
mitochondr
ia,
l
ysosome s,
chl
oropl
ast
s,
plasma
(cel
l
sur
face)
memb r
ane,
centr
iol
es,
fl
agell
a and
cil
i
a .
Out
li
ne
the
funct
i
o ns
of
the
str
uct
ures
li
sted
above.
Outl
ine
the
int
errel
ati
onshi
p bet
w een
the
organel
les
invol
ved
in
the
product
ion
and
secr
eti
on of
prot
eins.
Expl
ain
the
impor
tance
o f
t
he cyt
oskel
eton i
n pr
ovi
ding
me chani
cal
st
rengt
h t
o cel
ls,
ai
ding
tr
anspor
t
w i
thi
n cel
ls
and enabl
ing
cell
movement.
Comp ar
e and
contr
ast
, wi
th t
he
aid
of
diagr
ams
and
elect
ron
micr
ogr
aphs,
t
he
st
ruct
ure
of
prokar
yoti
c
ce l
l
s and
eukaryot
ic
cel
ls.
Comp ar
e and
contr
ast,
wi
th
the
aid
of
diagr
ams
and
elect
ron
micr
ogr
aphs,
t
he
st
ruct
ure
and ul
tr
astr
uctur
e of
pl
ant
cel
ls
and ani
mal
cel
ls.
Done
Cell membranes
Out
li
ne
the
rol
es
of
membr
anes
w i
t
h i
n cel
ls
and
at
the
sur
face
of
cel
ls.
St
ate
that
pl
asma
(cel
l
sur
face)
membr
anes
are
par
ti
all
y
per
meabl
e bar
ri
ers.
Descr
ibe,
wi
th
the
aid
of
diagr
ams,
t
he
fl
uid
mosai
c
model
of
membr
ane
str
uct
ure.
Descr
ibe
the
rol
es of
the
comp onent
s of
t
he
cell
membr
ane phosphol
ipi
ds,
chol
est
erol
,
glycol
ipi
ds,
prot
eins
and gl
ycopr
otei
ns.
Out
li
ne
the
eff
ect
of
changi
ng
temper
atur
e on
membr
ane
str
uct
ure
and
per
meabi
li
t
y.
Expl
ain
the
ter
m cell signalling.
Expl
ain
the
rol
e of
membr
anebound
recept
ors
as
sit
es
w her
e hor
mones
and
drugs
can
bind.

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Page 2

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Expl
ain
what
i
s meant
by
passive transport (
dif
fus i
on
a nd f
a ci
l
it
ated di
ff
u si
o n incl
udi
ng
t
he r
ole
of
memb r
ane
prot
e i
ns),
active transport,
endocytosis
and exocytosis.
Expl
ain
what
i
s meant
by
osmosis,
i
n t
erms
of
w at
er
pot
ent
ial
.…read more

Page 3

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Descri
be
the
feat
ures
of
an
eff
ici
ent
exchange
sur
face,
wi
th
ref
erence
to
dif
fusi
on
of
oxygen
and
carbon
dioxi
de
across
an al
veol
us.
Descri
be
the
feat
ures
of
the
mammal
ian
lung
that
adapt
i
t
to
eff
ici
ent
gaseous
exchange.…read more

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Descri
be
and
expl
ain
the
signi
fi
cance
of
the
dis
sociat
ion
curves
of
adul
t
oxyhaemogl
obi
n at
di
ff
erent
car
bon di
oxi
de l
evels
(t
he Bohr
ef
fect)
.
Expl
ain
the
signi
fi
cance
of
the
dif
fer
ent
af
fi
nit
ies
of
fet
al
haemogl
obi
n and
adul
t
haemoglobi
n f
or
oxygen.…read more

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AS Unit F212: Molecules, biodiversity, food and health
Module 1 Biological molecules
Done
Biological molecules
Descr
ibe
how hydr
ogen bondi
ng occur
s bet
ween water
molecul
es,
and
rel
ate
thi
s and
ot
her
proper
ti
es
of wat
er
to
the
rol
es of
water
i
n l
i
ving
organi
sms .
Descr
ibe,
wi
th
the
aid
of
diagr
ams,
t
he
str
uct
ure
of
an
ami
no
aci
d.…read more

Page 6

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Descr
ibe
how t
he
concent
rat
ion
of
glucose
in
a sol
uti
on
may
be
det
ermi
ned
usi
ng
col
ori
metr
y.
Done
Nucleic acids
St
ate
that
deoxyr
ibonucl
eic
acid
(DNA )
i
s
a pol
ynucl
eot
ide,
usual
ly
doubl
e st
randed,
made up
of
nucl
eo t
ides
contai
ning
the
bases
adeni
ne (
A),
t
hymine (T)
,
cyt
osine
(C)
and
guanine
(G).…read more

Page 7

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Page 8

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Module 2 Food and health
Done
Diet and food production
Def
ine
the
ter
m balanced diet.
Expl
ain
how consumpti
on
of
an
unbal
anced
diet
can
lead
to
mal
nut
ri
ti
on,
wi
th
r
efer
ence t
o obesi
ty.
Di
scuss
the
possi
ble
li
nks
bet
w een
diet
and
cor
onar
y hear
t
dis
e ase
(CHD).…read more

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Compar
e and
cont
rast
t
he
pri
mar
y and
secondar
y i
mmune
responses.
Compar
e and
cont
rast
act
ive,
passi
ve,
nat
ural
and
art
if
ic
ial
i
mmuni
ty.
Expl
ain
how v
a c
cinat
ion
can
cont
rol
di
sease.
Di
scuss
the
responses
of
government
s and
other
or
gani
sat
ions
to
the
thr
eat
of
new
st
rai
ns
of
inf
luenza
each year
.…read more

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Module 3 Biodiversity and evolution
Done
Biodiversity
Def
ine
the
ter
ms
species,
habitat
and
biodiversity.
Expl
ain
how bi
odi
ver
sit
y may
be
consi
der
ed
at
dif
fer
ent
l
evel
s
habi
tat
,
speci
es
and
genet
ic.
Expl
ain
the
impor
tance
of
sampl
ing
in
measur
ing
the
biodi
ver
sit
y of
a
habi
tat
.
Descr
ibe
how r
andom
sampl
es
can
be
taken
w hen
measur
ing
biodi
ver
sit
y.…read more

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