Objec&ve
2.15:
ATP

•  Describe
the
generalized
reversible
reac&on

   for
release
of
energy
from
ATP
and
explain
the

   ...
Adenosine
Triphosphate
(ATP)

•  Temporary
molecular
storage
of
energy
as
it
is
being

   transferred
from
exergonic
catab...
Forma&on
&
Usage
of
ATP

•  Hydrolysis
of
ATP
(removal
of
terminal

   phosphate
group
by
enzyme
‐‐
ATPase)

   –  release...
ATP/ADP
Cycle

                     ATP
   Reactions                        Reactions
release energy                    re...
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Phys 02 15

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Phys 02 15

  1. 1. Objec&ve
2.15:
ATP
 •  Describe
the
generalized
reversible
reac&on
 for
release
of
energy
from
ATP
and
explain
the
 role
of
ATP
in
the
cell.

  2. 2. Adenosine
Triphosphate
(ATP)
 •  Temporary
molecular
storage
of
energy
as
it
is
being
 transferred
from
exergonic
catabolic
reac&ons
to
 cellular
ac&vi&es
 –  muscle
contrac&on,
transport
of
substances
across
cell
 membranes,
movement
of
structures
within
cells
and
 movement
of
organelles
 •  Consists
of
3
phosphate
 groups
aJached
to
 adenine
&
5‐carbon
 sugar
(ribose)


  3. 3. Forma&on
&
Usage
of
ATP
 •  Hydrolysis
of
ATP
(removal
of
terminal
 phosphate
group
by
enzyme
‐‐
ATPase)
 –  releases
energy
 –  leaves
ADP
(adenosine
diphosphate)
 •  Synthesis
of
ATP

 –  enzyme
ATP
synthase
catalyzes
the
addi&on
of
 the
terminal
phosphate
group
to
ADP
 –  Generated
during
the
catabolism
of
glucose

  4. 4. ATP/ADP
Cycle
 ATP Reactions Reactions release energy require energy ↓ ↓ Form ATP Use ATP ADP + Pi

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