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Summary Transport in animals A level Biology OCR revision notes £7.16   Add to cart
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Summary Transport in animals A level Biology OCR revision notes

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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.

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  • No
  • Transport in animals
  • August 6, 2024
  • 14
  • 2021/2022
  • Summary

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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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