VCE Biology Question Thread

[Scooby]

I think intercellular fluid refers to the fluid between cells (aka tissue fluid), whereas intracellular fluid refers to the internal fluid of the cell.
That's correct.

I'd call it extracellular fluid rather than intercellular fluid

[alchemy]

I think intercellular fluid refers to the fluid between cells (aka tissue fluid), whereas intracellular fluid refers to the internal fluid of the cell.
That's correct.

http://en.wikipedia.org/wiki/Extracellular_fluid
Intracellular fluid is the cytosol. Extracellular fluid is tissue fluid. It's found outside cells, in between them.

What Scooby said too:

I'd call it extracellular fluid rather than intercellular fluid

[RazzMeTazz]

When blood glucose levels are high, does insulin inhibit glucagon secretion?

[grannysmith]

http://en.wikipedia.org/wiki/Extracellular_fluid
Intracellular fluid is the cytosol. Extracellular fluid is tissue fluid. It's found outside cells, in between them.

What Scooby said too:

Whoops, should've made myself clearer. I was mainly referring this statement:

Btw, I'm pretty sure intercellular fluid refers to the cytosol, so you shouldn't confuse if for interstitial or tissue fluid.

[RazzMeTazz]

Does glucagon only stimulate the conversion of glycogen into glucose or does it also stimulate the conversion of non-carbohydrates, such as fats into glucose as well?

 

[Rishi97]

hi
I'm having having a lot of trouble remembering the inputs/ outputs especially the values in cellular respiration. Does anyone have like a table of some sort that summarises all this info?

[vox nihili]

hi
I'm having having a lot of trouble remembering the inputs/ outputs especially the values in cellular respiration. Does anyone have like a table of some sort that summarises all this info?

http://www.atarnotes.com/?p=notes&a=feedback&id=1128

[Rishi97]

http://www.atarnotes.com/?p=notes&a=feedback&id=1128

Thanks heaps !!!!
What is 2 GDP + 2 Pi   ?  Also, what is 2 oxaloacetate ?
I've never heard these terms

[Scooby]

Thanks heaps !!!!
What is 2 GDP + 2 Pi   ?  Also, what is 2 oxaloacetate ?
I've never heard these terms

GTP is like ATP - it's another source of cellular energy. Oxaloacetate is what reacts with acetyl Co-A to start off the Krebs cycle. Don't worry about either of them

[Scooby]

Does glucagon only stimulate the conversion of glycogen into glucose or does it also stimulate the conversion of non-carbohydrates, such as fats into glucose as well?

 

Both. When the liver runs out of glycogen, glucagon stimulates the liver to produce more glucose by gluconeogenesis

When blood glucose levels are high, does insulin inhibit glucagon secretion?

Yep, insulin inhibits release of glucagon

[howlingwisdom]

Are plant hormones generally transported to target cells via the phloem or is it the xylem as well?

[RazzMeTazz]

For the topic of: co-ordination and regulation at the cellular level , the study design says we need to know:

- The nature of the stimulus-response model and the roles of the nerve pathway and chemical signals in the transmission of information from receptor to effector.

What exactly does it mean by "roles of the nerve pathway and chemical signals in the transmission of information from receptor to effector"

[alchemy]

Are plant hormones generally transported to target cells via the phloem or is it the xylem as well?

Both. Phloem is a vascular tissue that carries dissolved nutrients (including hormones) downwards from leaves, whereas the xylem carries them upward from the root. Note that this process is very slow, in comparison to hormones being transported in the bloodstream.

[auds]

Are there any differences between signal transduction and signal cascades???

[howlingwisdom]

Both. Phloem is a vascular tissue that carries dissolved nutrients (including hormones) downwards from leaves, whereas the phloem carries them upward. Note that this process is very slow, in comparison to hormones being transported in the bloodstream.

Thank you! Though I think you meant that the xylem carries them upwards