Summary Introduction to metabolism

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Introduction to Metabolism
Metabolism is of all the chemical processes in
organism time.
·
the sum
occurring an at one


·
Metabolism performs 4 functions :

:
Obtain for the cell .
2 Convert into macromolecules
energy
.
energy
.




.
3 Assemble macromolecules into cellular structures
.




required for biological functions
Degrade
4
. macromolecules as .


·
Metabolites & synthesis of macromolecules
are small molecules that are intermediate products in the
degradation ·




·

Enzymes are the basic units of metabolisms
· Substrates of these enzymes are called metabolites
.


·
Metabolic pathway is series of connected enzymatic reactions that specific product This consists
a
produces a ·




pathway
of several steps
.




Catabolism vs. Anabolism
m i n




·

Catabolism : Generates
Degradation pathways to salvage components &
energy
from biomolecules
energy
·
Anabolism : Biosynthesis of biomolecules such as nucleotides , proteins, lipid .

Requires energy
Biomolecules predominantly composed of carbon &
hydrogen oxygen nitrogen
~
are , .
,




Stages of Metabolism/Catabolism:
-




&




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