Wenhao's Biology 3/4 Ques Thread!!!

[LOLs99]

Haha that's fine.

Osmosis is the diffusion of water molecules from a region of low solute concentration to a region of high solute concentration across a semi-permeable membrane. Anything to add or change? Please give me the best definition that I could get.
Do I have to add "water movement "to this osmosis definition?

[Truck]

Haha that's fine.

Osmosis is the diffusion of water molecules from a region of low solute concentration to a region of high solute concentration across a semi-permeable membrane. Anything to add or change? Please give me the best definition that I could get.
Do I have to add "water movement "to this osmosis definition?

That sounds pretty good to be honest, some definitions online say "any solvent" although for 3/4 level I'm pretty sure it's just with water.

[LOLs99]

Ok, if that sounds good, I will jot it down. So it's a full mark definition,yeah?
LOL, don't confused me and I will just say water molecules.

******Anyone can explain to me about the cellular respiration and photosynthesis?
I just stuffed this up by studying these two.

[Panicmode]

The definition of osmosis I would use would be;

The passive diffusion of solvent across a semipermeable membrane from an area of high concentration of solvent to low concentration of solvent.


That's about as "full marks" as it gets/

[LOLs99]

Can't I use low to high?

[Truck]

Can't I use low to high?

High concentration of solvent = low concentration of solute and vice versa.

Just use whichever one makes you understand the term better.

[LOLs99]

Wow, indeed confusing and I use low solute concentration to high..... is that different?

Solvent is water and solute is?

[Truck]

Wow, indeed confusing and I use low solute concentration to high..... is that different?

Solvent is water and solute is?

The solvent is water, the solute can be anything - it can be sugar, salt, potassium ions. Basically the way I think of it is the solute is dissolved in the solvent, i.e. Sugar is dissolved in water.

[LOLs99]

Yeah haha tq and

 high solute concentration=  low solvent concentration
 low solute concentration= high solvent concentration ??   is that right?

[Panicmode]

Yeah haha tq and

 high solute concentration=  low solvent concentration
 low solute concentration= high solvent concentration ??   is that right?

Yes that's essentially right.

[Markkiieee]

Are you asking these questions because you skipped 1/2 bio?

[LOLs99]

Are you asking these questions because you skipped 1/2 bio?

Yeah I did skipped 1/2 Bio and haven't done any yr9-10 bio(just focus on physics and chem).
So I assume you know this?
If yes you might be able to explain the cellular respiration and photosynthesis to me. Thanks

[Markkiieee]

Are you asking these questions because you skipped 1/2 bio?

Yeah I did skipped 1/2 Bio and haven't done any yr9-10 bio(just focus on physics and chem).
So I assume you know this?
If yes you might be able to explain the cellular respiration and photosynthesis to me. Thanks

I'll explain it when we go to the library together.

[ggxoxo]

Haha that's fine.

Osmosis is the diffusion of water molecules from a region of low solute concentration to a region of high solute concentration across a semi-permeable membrane. Anything to add or change? Please give me the best definition that I could get.
Do I have to add "water movement "to this osmosis definition?

With osmosis you must always refer to the water molecules. I would say the definition should be:

Osmosis is the passive net movement of water molecules from a region of high water concentration (low solute) to a region of low water concentration (high solute) across a selectively permeable membrane

*I would not use diffusion but rather 'passive net movement' (net=overall; net is important because if there is no overall movement of molecules [because maybe it is in an isotonic solution] there is no osmosis)

[LOLs99]

Haha that's fine.

Osmosis is the diffusion of water molecules from a region of low solute concentration to a region of high solute concentration across a semi-permeable membrane. Anything to add or change? Please give me the best definition that I could get.
Do I have to add "water movement "to this osmosis definition?

With osmosis you must always refer to the water molecules. I would say the definition should be:

Osmosis is the passive net movement of water molecules from a region of high water concentration (low solute) to a region of low water concentration (high solute) across a selectively permeable membrane

*I would not use diffusion but rather 'passive net movement' (net=overall; net is important because if there is no overall movement of molecules [because maybe it is in an isotonic solution] there is no osmosis)

So add  "passive net movement" instead of diffusion? What exactly is passive net movement?

Are you asking these questions because you skipped 1/2 bio?

Yeah I did skipped 1/2 Bio and haven't done any yr9-10 bio(just focus on physics and chem).
So I assume you know this?
If yes you might be able to explain the cellular respiration and photosynthesis to me. Thanks

I'll explain it when we go to the library together.

Please explain it here as I want to write down some info now. ThankQ