Osmosis, Water Potential of Plant Tissue (AS and A level)

[@remeushanjenardstephen2290]

Even though it seems fine to include the mass of the weighing boat for all the tubers, when calculating % change in mass, the denominator of the fraction will include the mass of the weighing boat as well instead of it just being the mass of the tuber, hence giving us a slightly inaccurate % change in mass. As you might say, the mass of the weighing boat might be negligible, but it would make a notable difference when dealing with such small masses. Anyway, thanks for a great video :)

[@NuclearCashew]

Very informative and useful even 3 years after being uploaded. Thanks!

[@science8731]

Your videos are outstanding. You must continue these. !

[@biologypracticalsandrevisi8066]

Cambridge IGCSE and As/A-Level Science Thanj you. When I have time I will make more. They are unrehearsed one takes and they are far from perfect but I am glad they are useful.

[@emilydare1429]

Brilliant thank you!!! Just did this practical but found this so helpful as our teacher wasn't allowed to explain much!!!

[@RBC2006]

Thanks a lot! This video was really helpful and nicely produced.

[@konradw360]

looks like it was recorded on a Facebook portal with the weird camera panning

[@David-oc5vv]

Detailed and informative, thanks a lot.

[@alex19991014]

This Video is really really useful . Thank you very much for your effort Madam

[@michelleestrada9783]

Hi! Really love these videos, very helpful. May I know why a sucrose concentration is the most ideal as opposed to other non-electrolytes like mannitol?

[@lostkitty4583]

Is the volum of 1.0m sucrose fixed? Can i use other volume to make 0.2m concentration other than using the volume of 4ml?

[@sowmyas958]

Thanks for detailed information...

[@King-sm8ns]

This table and gas taps and even knives look exactly the same as the ones in my school!

[@muffin._.milk.]

I’m in ur 10 and I’m dying rn. This is my hwk:)

[@emilys3198]

u graduated now while im still im in year 10

[@muffin._.milk.]

@@emilys3198 ah that's shitty, jokes on yr10 me, I went back to science, and now have to do this again

[@jaminaxo9637]

This is so useful! Thanks so much!

[@sujata8957]

Thank You!

[@IbnuHussein-w5l]

Amazing

[@21d78]

What would the conclusion be of the whole experiment?

[@ICCDZ]

When you get the isotonic water potential for a cell or a tissue in a solution, it would mean the external water potential is the same as the internal water potential. You get the water potential for a specific plant tissue, in this case a potato.

[@dornaleighwilliams194]

I can't thank you enough🙏🙏

[@chandayadav7572]

Thankuuuuuuuuuuu , you helped me literally 😘😘😘😘

[@thunderingmusic5447]

Can u tell me why a rhoeo leaf isn't use for the water potential practical ?

[@lukemcellin8736]

puse at 4:06 for results tabel layout

[@mroosie7488]

Brilliant

[@emilys3198]

what could you substitute the potato chips for?

[@ShamimbanoSalimkhan]

This video is really helpful.. thank you...

[@anoohitakakarlamudi1197]

Hiya, thank you so much for the helpful video! What would you suggest to write for the lab report risk assessment?

[@thirshansubaskaran5488]

thank you miss

[@emilys3198]

can you do this experiment with salt dissolved in water instead of sucrose solution?

[@emreozcelik820]

where could i find an equipment list for this practical?

[@forever5335]

What would be a hypothesis for this experiment ?

[@biologypracticalsandrevisi8066]

It isn't really the type of investigation that requires an hypothesis. You are simply finding the water potential of plant tissue. Hypothesis are testable predictions based on evidence from prior research or observations. It wouldn't be correct to randomly predict the water potential of plant tissue then test it to see if you were correct. So no hypothesis I'm afraid.

[@tristan8830]

thanks a lot!!!!!!!

[@rahman1314]

how did you make the 1 mol sol

[@rebeccaparker3698]

If you were to draw a line of best fit, would the line be straight or would it connect to all points?

[@mayamistry7203]

connect the points so itll be like a curve

[@Anonymous-fj2uo]

How did you Work out the Numbers in the table at the beginning???

[@Syiepherze]

Cam S I think it's like this: Total volume of liquid in each tube is 20 cm^3. • 0M = 0 cm^3 sucrose/20 cm^3 • 0.2M = 4 cm^3 sucrose/20 cm^3 • 0.4 = 8/20 • 0.6 = 12/20 etc etc And if you're using 10 cm^3 total then it's much more straightforward (e.g. 0.2M is literally 2 cm^3 sucrose out of 10 cm^3 total liquid) And so on. Idk how you work out the individual volumes, but I'm pretty sure it has something to do with the sucrose:water volume ratios. Sorry if my reply is too late (I'm only cramming practical-related stuff now for paper 3 :/ )

[@619alison619]

Thanks

[@ie_dhiofaturrohmanadhapebi4637]

siapa yang kesini gara-gara tugas fisiologi tumbuhan

[@israkhalif8338]

could you explain how you got the serial dilutions. the calculations

[@niacherryblossom]

C1 v1= c2 v2 this is c1 is the original concentration v1 is the 20ml = c2 is the different concentrations used and v2 is the volume needed to make it up to the 20 ml mark....late reply hope it helps

[@sukh6566]

Amount of sucrose solution= Total volume (20cm3)/Concentration Volume of distilled water= Total volume (20)-Volume of sucrose

[@useyournoodle100]

This video is great but needlessly complicated. 1ml = 1 cubic centimetre, so measurements can be done in ml instead of cubic centimetres. Also 1 decimetre is = 1000 cubic centimetres which one is 1 litre or 1000 millilitres. Why measure in decimetres cubed, does your graduated cylinder measure that way? Use 342.3 grams of sucrose per litre of water to make the sucrose solution.

[@biologypracticalsandrevisi8066]

It is simply the confusion that many measuring cylinders and syringes are labelled ml. Some students are confused that a ml is the same as a cm3. The videos are unrehearsed one takes. Nothing fancy but I hope a little bit helpful.

[@Wiggles1]

6:16 misstated a percentage mass change as a mass gram change. Great video.

[@ethanfate5439]

people.. can someone tell me which is independent and dependent variables? and control? ASAP!!

[@biologypracticalsandrevisi8066]

Ethan Fate independent is what you change. In this case the different concentrations of sucrose. The dependent variable is the result you measure and record. In this case the change in mass. There is no control in this investigation.

[@ethanfate5439]

GOT IT!! THANKS!!! 🙏 😭.

[@arhamijaz4573]

Controls would be the size of chips and the volume of sucrose

[@anjanaumandi1421]

Tnx

[@hannahheavens3033]

😍

[@nilanthaabeyrathne3406]

Thank youu

[@Mucha.offical]

dont u need a water bath?

[@saajitha4444]

How to make the dilution series?

[@onigirifluff]

simple dilution with the formula required concentration divided concentration of given solution multiplied by the total volume of your solution you may also use serial dilution

[@emilys3198]

CAN THIS EXPERIMENT BE CONDUCTED OVER THE COURSE OF SEVERAL WEEKS RATHER THAN 20 MINS?????

[@taylorleeforcongress8470]

You have nice nails.

[@HaroldMoose]

Thanks! You too!

[@joellegilbert5363]

Why do the potato chips need to be blotted dry?

[@umar757]

because each potato tube has a different amount of water on its surface, so when you're weighing their masses you're only taking into account the mass of water gained or lost and not any water which might be present on its surface,.

[@childishrex1297]

halo ges

[@edgarsosa8093]

whats distilled water ?

[@jungshook9927]

It's pure water and has a water potential value of 0

[@King-sm8ns]

Water that has been omitted of any ion. It is pure. For example, regular tap water has sodium and magnesium ions, but distilled water is pure H2O

[@jungshook9927]

I have my experiment tomorrow. My board is Aqa. Anyone else?

[@King-sm8ns]

Jungshook I have mine on Monday :D AQA as well!

[@jungshook9927]

King42415 good luck!! ☺️☺️

[@roaringwolves7433]

gar mo daddy lkey

[@vishalmeghwal4470]

Who the fuck is the camera man

[@brandonbush5668]

Thanks