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Summary Topic 2 - cells

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In depths mindmaps of sub- topics within Topic 2 (cells) of Alevel biology Notes are formed with markscheme points within it and diagrams. Have some extra information to help with essay writing.

Institution
Course

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·
chloroplast
enveloge
chloroplast
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of materials
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Functions : -
control entry exit
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-
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ood store different types of organelles
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-


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-
circular DNA -
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no membran band membran band organdy
organdly
- 10s ribosomes -
80s ribosomes

-




murein/peptidoglycan -

celluse/chilin all
all wall wall


-

no nuclear membra
-

nuclear membrane

-
Double membran
-

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uses e-instead of light
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resolution = Inm
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than light : improved not alive
resolution Specimen
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colour picture
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-complex staining process
needs to take place for
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-




using
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to allow e-through that
charge pass through
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needs to be very thin things on the pichuse
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cells
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.
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microscope
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focused using glass
be this



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sample tissues studied needs to


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3
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.




determine enough to allow light to
pass through
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specimen that absorb more
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4
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measur
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light will
-




appear
digested lowed conversion hom (m > em =
-




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-




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of
disrupt
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-




.
2
organelles
-




release large wavelength of light
blender to break calls + cheaper Man
-




↳ using a alteratives
-

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in

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slage up just belo He



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organelles based on
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used
until In
image roughly
separate different
is
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centrifuge is 5 .


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image

arch pellet
settle
· Filterate 1st sour at law
syeed fous heaviest aganelle (nucle to
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bottom of the lube + fam a pellet Never Could Make Leeds

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· removed t supernatant
is
spun
at
faster speed
a
Evenly ripe

↓ T
remaining filterate
Eyepiece graicule


order
removed
supernatent again
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is
· next heaviest (mitochondria) Fams a pellet +

accurate measurements of
·
process repeals used to take
Hitchondria subcellmar shuckses
organelles to be separated speed of centrifugal an(er/min)
Nuclei 1000 1 . Measure with eyepiece graicule
Mitochondria 3500
.
2 Calibrate eyepiece graicule against
Stage micrometer
16500 calculate
Lysosomes . Take no measurements
3 + mean

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Study Level
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Subject
Unit

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Uploaded on
January 2, 2025
File latest updated on
January 2, 2025
Number of pages
7
Written in
2024/2025
Type
SUMMARY

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