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Class notes IEB Life Sciences (Biology the Cell )
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These are class notes on the IEB grade 10 textbook chapter 5( the cell) . Includes diagrams as-well as notes on the topic the cell.
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Chapter 5The cell
, Chapter 5
The cell
living
·
protoplasm matter
=
Inorganic componets Water
orgonic substances
↳
main componet ~proteins
↳
dissolve host chemical reactions
Ls
: to Ni to cell membrace
↳
all proteins
gases enzymes
=
& dissolved
Carbohydrates
~
↳
Oxyge CO2 in
cytoplasm
↳
mineral salts Sugars & starch=
energy
(sodium/chloride/puttassium ions)
↳ ~
in ionic form lipids (fati)
↳
stored reserved
energy
as
nucleic acids
·
>
DNA
SRNA
Solutions
True solution =
homogenous Emulsion :
oil droplets in water -> emulsi
-Some in size
not seen
by eye
colloidal solution :
particles to
heavy to float but to
light to sink
-eg .
(salt/sugars in
water) -sometimes hove some electrical
charge
:
repel each other
:
remain in suspension
Suspension (aggregates)
heterogenous
:
-form dumps or
strings
-See with naked
eye
hold places
-
-usally
sinks to bottom
Aggregates water in between particles
-cell proteins form colloidal
organelles floating cytoplasm Suspension solutions
=
in
solid
more
gal state
=
more liquid= sol
cytoplasm (endoplam)
middel of :
sol State
border of cell membrace (ectoplasm) get State
=
Osmosis -
the movement of water molecule from a
hight to low
4 through a
differentially
permeable membrane
-side with more solute =
lower 4
↑ water
potential
=
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