Summary Transport in animals A level Biology OCR revision notes
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Course
Transport in animals
Institution
OCR
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A Level Biology A for OCR Student Book
In depth revision notes covering the whole of transport in animals. The topic is broken down into the individual specification points, shown by the numbers used throughout.
OCR A Biology H420 - 2.1.5 - Biological Membranes (Chapter 5) Short Summary Notes
Respiration notes or OCR biology A level
Biodiversity revision notes for Biology A level OCR
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Transport in animals
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, 3 7 2 TRANSPORT IN
.
.
ANIMALS
Need for transpor
se
histt
·
metabolic rate-large multicellular
organisms ↑
have metabolic rate
.
↳ diffusion alone enough
isn't
·
SA : Vol-in larger organisms diffusion ,
would
occur too slowly But , single-alled organisms
.
have a large SA : Vol because the diffusion
path is so short
circulatory
used to
transport normous 1)
systems are
systems
circulatory
- enzymes from a gland to other parts of the
body
, it is also needed to dispose of waste
·
products etc ...
when the
heart relaxes the
pumps
,
heart naemolymph blood
↑
naemolymph through issucked backwi by
short vessels these pores
↳ into
L
& Yish
naemocoel -locust
Blood is fully
-
enclosed <
withi blood
vessels
-
in the
In the capiaries S
naemocal
, substances
naemolymph diffuse his
&
-
directly out of the
bathes blood vito
organs aus
tissues So
diffusion of
substances can occur
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