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OCR A-Level Biology Classification Summary

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A HandWritten summary which contains all the necessary A* Content for Classification at OCR A-Level Biology.

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  • October 9, 2023
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  • 2023/2024
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faithcortis
taxonomic Groups ordered
Seven
groups in an
heirarchy
:




omain :
Three distinct domains :




Eukarya 80s ribosomes RNA polymerase contains proteins
·

12
:


,




Archaca Tos ribosomes RNA contains 8-10 proteins
·




polymerase
:


,




Bacteria Tos ribosomes , RNA 5 proteins
·




polymerase contains
:




ingdom five
kingdoms
:




Prokaryotae bound organelles
·

Unicellular no membrane
:




,




>Can be split into two sman er
groups
Eubacteria true traditional bacteria
·
:


,




Archaebacteria Ancient bacteria found
·



in extreme environments
:




·

Protoctista unicellular membrane bound (some have Chloroplasts)
mainly
:




, organeues , ,




some are Sessile , can be both autotrophic and heterotrophic
Fungi
·

unicellular or multicellular, membrane bound and a chitin
:




organelles cen wall ,

no chloroplasts , no mechanisms for movement most are made of
,
mycelium/hyphae ,




Saprophytic feeders store food as glyzogen ,


·

Plantae Multicellular membrane bound :



chloroplasts and cellulose, no movement
,
organelles , ,




autotrophic ,
store food as starch

Animalia Multicellular, membrane bound
organenes (no cenwaus) no Chloroplasts
·
:



, ,




with contractive proteins/cilia heterotrophic store
no Chloroplasts ,
more , ,




food as
glycogen
hylum
:
Presence of a Spine ie .
Chordata



lass ie Mammalia
Binomial Nomenclature Genus specific name
:
.
· :

,




- homo sapien
rder primates
Phylogeny
ie
.




evolutionary relationships between organisms
: ·
. :




↳ showed in
phylogenetic trees

amily ie hominidal
.
:
.




enus
:



i. e .
homo




pecies
:

ie .

Sapiens

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