|
Component
|
Percent
of
Total
cell
Weight
|
Approximate
number
if
molecules/cell
|
Number
of
Different
Kinds
|
|
Water
|
70
|
4
x
1010
|
1
|
|
Inorganic
Ions
|
1
|
2.5x
108
|
20
|
|
Carbohydrates
and
Precursors
|
3
|
2
x
108
|
200
|
|
Amino
Acids
and
Precursors
|
0.4
|
3
x
107
|
100
|
|
Proteins
|
15
|
106
|
2000
-
3000
|
|
Nucleotides
and
Precursors
|
0.4
|
1.2x
107
|
200
|
|
Lipids
and
Precursors
|
2
|
2.5x
107
|
50
|
|
Other
Small
Molecules
(
Breakdown
products
of
food
molecules,
quinones,heme
etc.)
|
0.2
|
1.5x
107
|
250
|
|
Nucleic
Acids
-
DNA
|
1
|
1-4
|
1
|
|
Nucleic
Acids
-
RNA
|
6
|
5x
105
|
1000
|
