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The movement of substances within living organisms.

What would you write for this on AQA B synoptic?

The movement of substances within living organisms.

I can't think of anything apart from mass flow hypothesis in plants?
Reply 1
I was just looking at this one as well!

I was thinking:
- movement of gases around the body (oxygen etc)
- blood pumped around the body by the heart
- water, minerals, sugars around a plant
- everything in the kidneys, glucose, urea etc

Dreading the essay on weds :\
Reply 2
star725
I was just looking at this one as well!

I was thinking:
- movement of gases around the body (oxygen etc)
- blood pumped around the body by the heart
- water, minerals, sugars around a plant
- everything in the kidneys, glucose, urea etc

Dreading the essay on weds :\


Good points
Do you think transport of ions into xylem would count as technically that isn't within a living organism?
There's no mark scheme for this either which is slightly annoying!
Reply 3
*Princess*
What would you write for this on AQA B synoptic?

The movement of substances within living organisms.

I can't think of anything apart from mass flow hypothesis in plants?


Osmosis
Active Transport
Diffusion
Facilitated Diffusion

add them to the list.
Reply 4
Suppose you could talk about protein synthesis and how mRNA is moved from the nucleus to the ribosomes
Reply 5
Kiwiguy
Osmosis
Active Transport
Diffusion
Facilitated Diffusion

add them to the list.


oh genius!
I would have never thought of those in the exam :rolleyes:
Reply 6
*Princess*
oh genius!
I would have never thought of those in the exam :rolleyes:


Well Sorry for trying to be helpful.

I'll go back to being an arse then...:yep:
Reply 7
Kiwiguy
Well Sorry for trying to be helpful.

I'll go back to being an arse then...:yep:


Sorry i wasnt trying to be sarcastic
tho looking back it seems as it was
I am genuinely saying thankyou!
Reply 8
*Princess*
Sorry i wasnt trying to be sarcastic
tho looking back it seems as it was
I am genuinely saying thankyou!


oh...

:awesome:
There's SO much you can write for that! I love those sorts of questions.

On probably the largest end of the scale, you have mechanical movement of stuff, peristaltic action moving food through the alimentary canal for example. Or even blood being moved around the circulatory system by the action of the heart.

You've got loads of osmosis stuff, both in plants and animals.

Diffusion of gasses from lungs to blood stream and back again. Also the transport of those gasses by the blood (oxygen binding to Hb, carbon dioxide dissolving in blood). Don't limit it just to animals, talk about plants and gas exchange, and insect spiracles/tissue fluid etc.

Diffusion of ions/glucose etc.

Facilitated diffusion and active transport by enzyme pumps/channels.

Axonal flow in neurones/action potential/neurotransmitters in vesicles then diffusing across synapse.

Exocytosis/ secretion of hormones/peptides/cell signals etc.

Microtubules/cellular spindles moving chromosomes.

Electron transfer chains etc.

Photosystems in chloroplasts moving electrons.

There's no way you can run out of stuff to write about :smile: And remember to try and link in as much as you can, that'll get you higher marks :smile:
Reply 10
What about the movement of nucleotides to their complementary bases. And the movement of the phagocytosis to the pathogen and related that if these didn't occur the cell wouldn't be able to destroy pathogens or dna wouldn't be able to replicate

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