AQA Keeping Healthy – Biology Core science

Keeping healthy revision for AQA B1

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  • Created on: 30-12-12 13:36
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Keeping Healthy ­ Biology Core science
Di
et
a nd
exercise
A
heal
thy
diet
cont
ains
the
ri
ght
bal
ance
of
the
dif
fer
ent
f
oods
you
need
and
the
ri
ght
amount
of
ener
gy.
Carbohydrat
es
Fat
s
Prot
eins
Are
used
by
the
body
to
release
energy
and t
o bui
ld
cel
ls.
Mi
ner
al
ions
and
vit
ami
ns
are
needed
in
smal
l
amount
s f
or
healt
hy
funct
ioni
ng of
t
he body.
Food group Found in Needed by our
bodies for:
Carbohydrates Potat
oes,
A
source of
past
a, ener
gy for
li
fe
br
ea d,
pr
ocesses
bananas,
sugar
and
r
ice
Fats Cheese, A
source
of
but
ter
, ener
gy f
or
li
fe
margar
ine pr
ocesses:
fat
s
and
oil
s ar
e al
so needed
t
o make cel
l
memb r
anes and
t
o i
nsul
ate our
bodi
es
Proteins Meat,
f
ish,
Growth
and
eggs
and r
epa i
r
bui
ldi
ng
cheese cel
ls
The main food groups
I
mbal
anced
D i
et
A
person i
s
ma l
nour
ished
if
t
hei
r di
et
is
not
balanced.
Thi
s may l
ead t
o
a per
son
bei
ng over
w ei
ght
or
under
w ei
ght.
An
unbal
anced di
et
ma y
also
lead
to
defi
ciency
diseases
or
condi
ti
ons
such
as Type
2
di
abetes.
A
pe r
son
loses
ma ss
w hen
the
ener
gy
cont
ent
of
t
he
food
taken
in
is
less
than
the
amount
of
ener
gy
expended
by
the body.
A
poor
di
et
may
als
o
l
e ad
to
def
ic
iency
diseases.
For
exampl
e,
too
li
tt
le
vit
ami
n D
in
the
diet
can

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Type
2 di
abet
es
is
al
so
a pr
obl
em
r
elat
ed t
o poor
diet
.
Note that you do not need to know how the nutrients work or the effects of any particular
deficiency in the diet for your exam.
Exer
cise
incr
eases
the
amount
of
ener
gy
expended
by
the
body.…read more

Page 3

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Met
abol
ic
R at
e
Respir
ati
on i
s a
chemical
r
eacti
on
that
al
lows cel
ls
to
rel
ease
energy
fr
om food.
The
metabol
ic
rat
e i
s t
he
speed
a t
whi
ch such
chemical
r
eact
ions
take
place i
n t
he
body and
vari
es
because
of
sever
al
fact
ors,
i
ncludi
ng age,
gender
and
inher
it
ed
fact
ors.…read more

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