- pdf document
- summary of topics taught throughout the year
- perfect preparation for final exam or midterm
- organized with diagrams and different colours
- has a couple of examples that describe different events (how cells move)
- clear and concise diagrams
- handwritten on good notes
...
signals bind to
receptors on same cell t h at secretes them
signals bind to receptors on
nearby cells re l e a s e of hormones that travel LONG DISTANCE
t u m or cells reproduce uncontrollably , respond to
signals
·
target / no
targel cell
through bloodstream to target organs
that st i m u late cell division
·
target cells
/
target targel cell
·
no
c o o rd i n a te b e h av i o u r of in dividu al cells
no dead
cell
signaling
:
signals :
ke e p cells a l i ve and
functioning
-regulates inter nal environment
st i m u l a te ce ll division and differentiation
, a l l ow cells to respond to in environment
changes the
cell
siqualining : all wo r k
tgt
external and internal environment at cellular level relies on
signal transduc tion
Mechanism
1 .
Reception :
cell detects a signaling molecule from the outside of the cell
↑
chemical
siqual ligand
:
signal is detected when
ligand binds to
receptor
receptor is on s u r fa c e of cell inside of the cell
* cell
respond to
signal
ONLY to a specific receptor proteins that can
bind to those
signals *
Ere
&
eptors
Receptors 1 Receptor ligand
Membrane .
binding
transmembrane protein .
2
Signal transduction
large/polar ligands that don't cross
bilayer 3 .
Cellular response
polar ligands bind to transmembrane receptors to transmit 4 .
Changes in
gene expression
into from ou t to inside cell
stimulates produc tion of 2nd signal
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