人體的化學組成:

人體的化學組成:
我們人體包含6.71 x 1027 個原子，這些原子中百分之九十九是碳氫氧氮原子，百分之八十七是氫和氧原子。我們人體包含41種化學元素。
人體的原子組成:
Element

Sym

# of Atoms

Element

Sym

# of Atoms

Element

Sym

# of Atoms
Hydrogen

H

4.22 x 1027

Rubidium

Rb

2.2 x 1021

Zirconium

Zr

2 x 1019
Oxygen

O

1.61 x 1027

Strontium

Sr

2.2 x 1021

Cobalt

Co

2 x 1019
Carbon

C

8.03 x 1026

Bromine

Br

2 x 1021

Cesium

Cs

7 x 1018
Nitrogen

N

3.9 x 1025

Aluminum

Al

1 x 1021

Mercury

Hg

6 x 1018
Calcium

Ca

1.6 x 1025

Copper

Cu

7 x 1020

Arsenic

As

6 x 1018
Phosphorus

P

9.6 x 1024

Lead

Pb

3 x 1020

Chromium

Cr

6 x 1018
Sulfur

S

2.6 x 1024

Cadmium

Cd

3 x 1020

Molybdenum

Mo

3 x 1018
Sodium

Na

2.5 x 1024

Boron

B

2 x 1020

Selenium

Se

3 x 1018
Potassium

K

2.2 x 1024

Manganese

Mn

1 x 1020

Beryllium

Be

3 x 1018
Chlorine

Cl

1.6 x 1024

Nickel

Ni

1 x 1020

Vanadium

V

8 x 1017
Magnesium

Mg

4.7 x 1023

Lithium

Li

1 x 1020

Uranium

U

2 x 1017
Silicon

Mg

3.9 x 1023

Barium

Ba

8 x 1019

Radium

Ra

8 x 1010
Fluorine

F

8.3 x 1022

Iodine

I

5 x 1019






Iron

Fe

4.5 x 1022

Tin

Sn

4 x 1019






Zinc

Zn

2.1 x 1022

Gold

Au

2 x 1019

TOTAL



6.71 x 1027
一個人體細胞的分子成分:
Molecule

Mass %

MW (daltons)

# Molecules

Molecule %

Number ofMolecular Types
Water

65%

18

1.74 x 1014

98.73 %

1
Other Inorganic

1.5%

55

1.31 x 1012

0.74 %

20
Lipid

12%

700

8.4 x 1011

0.475 %

50
Other Organic

0.4%

250

7.7 x 1010

0.044 %

~200
Protein

20%

50,000

1.9 x 1010

0.011 %

~5,000
RNA

1.0%

1 x 106

5 x 107

3 x 10-5 %

----
DNA

0.1%

1 x 1011

46

3 x 10-11 %

----











TOTALS

100%

----

1.76 x 1014

100%