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IB Bio Hl: Chemistry of Life
IB Biology HL: Topic 2 - chemistry of life
8
Biology
12th Grade
12/16/2007

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Term
The most frequently occuring chemical elements in living things
Definition
  • Carbon (C)
  • Hydrogen (H)
  • Oxygen (O)
Term
Living organisms need a variety of other elements such as
Definition
  • Nitrogen (N)
  • Calcium (Ca)
  • Phosphorus (P)
  • Iron (Fe)
  • Sodium (Na)
Term
The function of Nitrogen
Definition

 

Major element for DNA and nuclei acid.

Term

 

The function of Calcium

Definition

 

Necessary for bone and tooth formation, blood clotting and nerve impulse transmission.

Term

 

The function of phosphorus   

Definition

 

Bone and tooth formation, and to balance acid and base concentration in the body. 

Term

 

The function of Iron   

Definition

 

 

Is a part of the haemoglobin, the molecule that carries oxygen in the blood. 

Term
The function of sodidum
Definition
Functions in nerve function and balances water, acid and base concentration
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