Pages in this set

Page 1

Preview of page 1
Tommy Broadley




Biology Revision Notes

Biochemical Tests:
Proteins add biurettes reagent to the sample. If protein is present, clear colour change from
blue to purple.
Reducing Sugars ­ add Benedict's reagent to the sample. Heat in Bunsen or water bath. If
reducing sugars are present, clear colour changes from blue…

Page 2

Preview of page 2
Tommy Broadley





The lock and key model:

This theory suggests that the substrate is able to fit into the active site like a key fits into a
lock. It states that the active site is complimentary in shape to the substrate. The substrate
then fits into the active site and…

Page 3

Preview of page 3
Tommy Broadley





1. competitive inhibitors
2. noncompetitive inhibitors

A competitive inhibitor molecule is similar in shape to the substrate therefore it can fit into the
active site of the enzyme, temporarily blocking it.

A non competitive enzyme inhibitor is different in shape to the substrate and binds to another
site,…

Page 4

Preview of page 4
Tommy Broadley




Fibrosis: It is non communicable. This disease increases fibrous tissue that grows in the
lungs. This means the diffusion distances are increases so the rate of diffusion is decreased.
Lung tissue is also then less elastic, difficulty breathing out.
Risk Factors: significant exposure to dust.

Lung Cancer: is…

Page 5

Preview of page 5
Tommy Broadley




membrane. There you have it! Water potential is represented by a very weird sign and the
units are kPa.


B i
o lo g y: Th e
H uman
Immu n e Sy ste m

P a th og en s

A
P at
h ogen:
a di…

Page 6

Preview of page 6
Tommy Broadley




Mucus Lining
many
epi
thel
ia
layer
s pr
oduce
mucus
w hi
ch
the
pat
hogens
st
ick
to.
Ci
lia t
ransp ort i
t
ba ck
up t
h e
tr
ach ea
by a `
beati
ng'
movement
and
t
hen swall
o wed…

Page 7

Preview of page 7
Tommy Broadley




Cell
Mediat
ed Respon se:

ma cr
o phages
ingest
the pat
h ogens
that
have ant
igens
on
t
heir
surf
ace.
Th e
ma cr
op hages
then pr
oce ss
the ant
igen molecul
es and
displ
ay
t
hem on
thei
r
surface.
I…

Page 8

Preview of page 8
Tommy Broadley




3. Dead
Pat
hogens
Vacci
nati
on l
eads t
o a
person
becoming immu ne.
I
f
a
high
enough pr
oport
ion
of
the
popul
ati
on ar
e vacci
nated
you get
her
d
immu ni
ty.
The % of
peopl
e t
hat
aren'…

Comments

Armin

The notes were great but a heart section would also be needed :)

Ridwanamo

great notes. 

Similar Biology resources:

See all Biology resources »See all resources »