Atp And Metabolism

scuffruff 8,252 views 10 slides Jul 19, 2008
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ATP and metabolism
Adenosine triphosphate

ATP and metabolism
A slightly different
version of one of the
nucleotides that
makes up RNA.

ATP and metabolism
Adenine
Ribose
phosphatephosphatephosphate

ATP and metabolism
ATP consists of:
The sugar ribose
The adenine
And three phosphate groups

ATP and metabolism
ALL living cells make
ATP
It is the energy
currency of the cell.
ATP is made almost
continuously and
probably lasts for less
than a minute before it
is broken down again.

ATP and metabolism
About 40kg of ATP
is made in cells
every day and used
almost immediately.
You may make up to
0.5kg a minute
At any one time you
probably have only
about 5g in your
body.

ATP and metabolism
When a cell needs
energy it hydrolyses
ATP
This produces ADP
and inorganic
phosphate.
In extreme
circumstances ADP
can be hydrolysed to
AMP

ATP and metabolism ATP and
metabolism
ATP ADP + P
i
released energy

ATP and metabolism
ATP is an “energy
currency” because
like money it is
constantly “recycled”
Carbohydrates and
fats act as energy
stores, while ATP is
energy currency.

ATP and metabolism
Advantage of ATP is it produces energy
in small ‘packets’.
A single molecule of ATP may be
enough to supply the energy needs of a
single chemical reaction.
ATP is constantly been used and
recycled by every living cell.