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OCR A-Level Biology Cellular Control(2) Summary

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Handwritten Summary by an Oxford Medical Student which covers all content necessary for an A* in Cellular Control at OCR Biology A-Level.

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October 11, 2023
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Post-translational Control :




Addition of non-protein groups Folding/shortening of proteins
·
.




modification of amino acids Modification
by CAMP .




Homeobox Genes 180 bases that :
code for a homeodomain protein
↳ Hox Genes specific to animals and appear in the order
39
genes that are
:




in which
they are expressed
Somites Segments directed by hox genes to develop in a particular
way
:




Radial No sides
Symmetry left/right only a top and bottom
:
,




Bilateral Have and
Symmetry a head/tail
left/right
:




mitosis Creation of cels to cause
growth
:




Apoptosis Programmed cen death to sculpt tissues
:

.




↳ May produce to prompt mitosis/cel reformation
signals

Factors that affect the expression of
regulatory genes
:



Stress Condition produced When a homeostatic balance is
·




upset
:



.




↳ External B internal
Changes

Theory of recapitulation :




Oncology mimics
embryonic ontology
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Handwritten A-Level notes by an Oxford University Medical Student that specifically target the content needed for an A-A*.

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