Wjec Biology Unit 5 Revision - Unit 1.4 Enzymes and Biological Reactions
AS unit 1 biology summary
Lecture notes BY2 - Biodiversity and physiology of Body Systems WJEC Biology for AS Student Book
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Biology
BY1 - Basic Biochemistry and organisation
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PE.IO 108J
, Ch 1 .
water
structureofwater
When Hao + NaCl .
- hydrogen
bonds Oo Ooo ooo
i
s -
N④ ④
s+
00 °O°
'
④ "
Q o
⑤
"
.
! '
'
'
the oxygen ions are the Ht are
-
④ attracted to Nat attracted to CI
④
Because opposite charges attract .
like charge repel
Propertiesof_Watr
.
1. High Specific Heat Capacity : the
energy needed to
raise the temperature of water
by 1°C .
↳ allow organisms to keep themselves at the right temperature
blooded )
e.
g. exotherms I warm -
2.
High Latent Heat of vapourisation :
the energy needed to convert water to vapour
3. High surface tension : take gliders
-
4. Metabolism -
Hydrolysis
↳ catabolic reaction which breaks down molecules
e.
g. maltose + Hzo → d-
glucose + ✗ -
glucose
5. Metabolism -
Condensation
↳ anabolic reaction which builds up molecules
Cohn Do +6oz
g. Gcoz +61-1,0
→
e.
6 .
Solvent
7. Transparent
↳ allow aquatic plants to photosynthesis e
8. High density as
liquid 1 lower as solid )
↳ ice floats
9. Support :
Buoyancy
↳ allow large animals to float
10 .
Support :
rigidity
, Nutrients
-
MGH .
Chlorophyll production N
co factor for enzymes p
-
-
"
Fe .
Haemoglobin K
°
Co -
factor for enzymes
"
ca .
Bones ¢ teeth
-
Calcium peltate -
cement between plant cells
blood
-
clotting
Vesicles
synapse
. -
-
muscle contraction
-
co -
factor for enzymes
13043 Main components for DNA RNA ATP phospholipids
-
.
, ,
,
carbohydrates
1. Monosaccharides : monomers for complex carbohydrates
Those ↳ Hoos glyceraldehyde
pentose Csthoos ribose
Hexose Cattalo glucose
B
A-
glucose glucose
-
G
lies
H ↳
1
" .
maltose water
A-
glucose glucose
- +
ta -
Iii I.it#L..tEH-n-no
bond
411,41 -
glycosidic
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