OCR A A-Level Summary notes: Water molecule and inorganic ions

* Introduction 2

↳ the cells
Biological Molecules Inorganic I a

of all
living organisms consists o ↳ different molecules :




O Carbohydrates - Carbon Hydrogen Oxygen
, both contain CHO +:: are
*
Inorganic ions >
- cons which don't contain carbon (with some exceptions)
> carbs
,
lipids +
② lipids Carbon hydrogen , Oxygen long
very similar but lipids have a
-




③ proteins Carbon, hydrogen Oxygen Nitrogen
,


chain of hydrogens
↳ Cations
-
, ,
-


positive charge :


⑪ nucleic acids Carbon hydrogen nerve impulse transmissions
nitrogen phosphorus
-
, ,
oxygen , ,
① Calcium-ca't -- muscle contraction
+↑ rigidity in bores and teeh


↳ they all contain carbon. :
they are organic
-

cofactor for enzymes
nerve impulset ransmission
② sodium-Nat---kidney function
*
Polymerization - most carbohydrates puting ,
+ nucleic acids are -

co-transport of glucose amino acids

from smaller monomer
Polymer made nerve impulse transmissions
/ flowers
③ potassium -
k"-- stomatal opening + develops healthy leaves
↳ regulating fluid balance
monomers join to form polymers by polymerisation
-




to determine pH levels CO2
used -
involved intransporty
⑪ hydrogen-H
+
wed in reactions
photosynther's




mmm
-

-

catalyses reactions


⑤ Ammonium-NHL of nitrogen 4 plants
"
, -> source


condensation reactions + broken down, by ?
⑥
Tron-fe binds w/Oz within naemoglein
olypeptide
>
-


hydrolysis reactions
condensation the removal of water
& to : to
>
- 00 + H20 form a chemical


solynucleotides
bond between 2 molecules * Anious -
negative charge
Chloride-CliMaintains blood igas exce
the addition of water to pH s ee
,
0-0 + H20 is
0 + o break a chemical bord ①
-
cell membrane formation
"
nucleic acid + ATP formation
② phosphate PO ,
-


-
-
-
bone formation
·


catalysis of reactions
③ hydroxide-OH- >
-pl determination


① hydren-HOse maintenance ta
q bled

nitrogen supply to plants for
⑤ Nitrate NO3
-




protein formation
-



animo acid +