Diffusion Demo

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12 жыл бұрын

Mr. Andersen talks you through the diffusion demo. After you finish watching this video you should be able to rank the following from smallest to largest: starch, glucose, water, IKI and the pores in the dialysis tubing.

Пікірлер: 97

@lucidama 5 жыл бұрын

who here is watching because the teacher told to watch it

@kaylat.8724 5 жыл бұрын

my teacher is a bitch

@minsin56 4 жыл бұрын

mine did and this video is useless

@rockyliseno8653 4 жыл бұрын

@@minsin56 bro wtf you talking about? I literally did a whole lab report for this experiment from just this video...

@minsin56 4 жыл бұрын

@@rockyliseno8653 i cant understand it

@zachs3694 4 жыл бұрын

My teacher is making me watch this video of some guy watching a video

@htuy42 11 жыл бұрын

Small and large generally denotes size I believe it is Water IKI Glucose Pores Starch Everything but starch went through the pores, glucose cannot cross a some membranes that water can, IKI is composed of more massive atoms than water (although probably very nearly the same size)

@grapist6969 3 жыл бұрын

Thank you so much I thought I was gonna figure it out myself 😉

@d.k5845 3 жыл бұрын

my teacher gradeing this cause of covid it better be right

@livybearful 3 жыл бұрын

your a legend even 7 years later

@alexlabra1016 3 жыл бұрын

@@livybearful Let me guess Stan State? lol

@kc9212 3 жыл бұрын

Thanks for this

@dilshodkarimov8378 6 жыл бұрын

So, im not gonna tell the answer, u figure that out! ok! what if I'm dumb?

@Ethereallise 3 жыл бұрын

If anyone has this for class today because of Covid Lmk Lol

@THEGOAT1TO3 2 жыл бұрын

I do

@jakiiri3523 3 жыл бұрын

Who's here cuz of AP Bio?

@sasukestruck5377 3 жыл бұрын

lol me

@jessicaramirezgonzalez39 3 жыл бұрын

ME LMAO

@drploofenshmirtz2908 3 жыл бұрын

why else would we be here?

@lukebell3736 3 жыл бұрын

@@drploofenshmirtz2908 freshmen bio lmao

@k8zuh 3 жыл бұрын

yall learning this in high school 🧍‍♂️?

@d.k5845 3 жыл бұрын

lets be honest you didn't search this. your teacher made you watch it and answer the question

@zinahalrubaye8173 2 жыл бұрын

naur

@idkneededtomakenewacc2575 Жыл бұрын

yeah so what is the answer

@rockyliseno8653 4 жыл бұрын

Thanks a lot for making this, you really saved me. My class did this experiment like 4 months ago and I didn't do the lab report. I was doing it today but I didn't have ANY of the data - so you really saved me. THANK YOU :)))))))

@MonkeyDLuffy-xr4fl 9 жыл бұрын

Water IKI Glucose Pores in dialysis tubing Starch

@factzilla3071 8 жыл бұрын

thanks so much bro

@timmyngo4756 7 жыл бұрын

same

@aaaaadir 9 жыл бұрын

The experiment shows that water, IKI, and glucose are smaller than the pores and starch is larger than the pores. Water is more basic that the other molecules so would be smaller. Glucose is a monosaccharide so would be smaller than the polysaccharide starch. But there is nothing in the experiment that would tell us if IKI is larger or smaller than Glucose.

@ScienceFan1859 7 жыл бұрын

AP level folks know glucose is C6H12O6 (24 atoms) and Lugol's is tri-atomic (IKI) so Glucose is bigger but not heavier... But: agreed: not revealed by lab exercise.

@xXUniqueSunRaysXx 11 жыл бұрын

I will rank them depending on what I have understood: 1)water 2)IKI 3)glucose 4)pores in dialysis tubing 5) starch

@josietunney3269 3 жыл бұрын

You made this comment when I was 6 years old and I am using it now

@waytoobiased 3 жыл бұрын

I came to the same conclusion. But since I did, that means we’re both wrong.

@mrsl0305 11 жыл бұрын

I just have to say you made it so clear to understand! thank you for posting this verrry helpful!

@peytonperdue9185 3 жыл бұрын

So what does iodine and starch do for that change. I have an assignment and those two play a part in what we would see if they crossed the membrane or what we would see if they didn’t cross the membrane

@recycledphoto717 10 жыл бұрын

So what were each of the components in terms of hypotonic, hypertonic, and isotonic? And they changed throughout the experiment, right?

@agninja123181 11 жыл бұрын

weird. my biology teacher did the opposite of this experiment, he kept the IKI solution in the tubing, and the starch/glucose solution in the beaker. This video was still helpful though, thankyou

@2460ck 2 жыл бұрын

1. Which molecules are moving and in which direction? 2. Which molecules are NOT moving? 3. How does this demonstration mimic the cell membrane?

@psycho_gurl378 9 ай бұрын

1. The iodine molecules moved INTO the tube, hence the solution inside turning blue due to starch plus iodine. The glucose molecules moved OUT of the tube, hence the positive testing for glucose in the outside solution 2. Starch did not move because it is too large of a molecule to move through the dialysis tubing 3. It mimics it in the aspect of it being semi-permeable, meaning not everything can move through it.

@Estee07 3 жыл бұрын

Kindly help provide an answer to this question please. Name a molecule that diffused through the artificial membrane (dialysis tubing)that was used in the diffusion virtual lab. Can diffusion occur without a membrane? Give example to support your answer. Thanks

@addisonkempf649 11 жыл бұрын

what does he mean by smallest to largest... smallest to largest what? color difference weight mass density? I am confused should have specified

@mariaabdelsayed1424 3 жыл бұрын

how you can figure out the relative size of molecules ?

@SeminarsforhealthCanada 3 жыл бұрын

Thanks for great explanation.

@rawr7268 2 жыл бұрын

How do we create a table with the results in this video?

@amberday7435 7 жыл бұрын

Mr. Anderson always has a way of explaining things so that I can understand them. Forest Gump reference intended ;-)

@TonyB1999 7 жыл бұрын

Matrix reference inadvertent.

@amberday7435 7 жыл бұрын

Never seen the Matrix.

@inmemoryofmango 12 жыл бұрын

@musicloverhere32 smallest to largest: water, glucose, IKI or iodine, membrane pores, starch

@kayleeferrier3776 3 жыл бұрын

Thanks so much for answering this question, even nine years later this is really helpful. Idk if you're gonna see this but if you do, have a nice day

@SDmomo619 2 жыл бұрын

So dialysis tubing allows things in but not out?

@tdolla103 7 жыл бұрын

How did iodine help us determine if starch was able to exit of the cell?

@chichan4461 5 жыл бұрын

bc when the iodine and starch meet it turns it blue. The starch didnt exit the bag bc only the bag turned blue, not the water in the beaker. Therefore it shows the starch is bigger than the holes in the bag bc it could only stay inside it not escape it. Oh wait....im 2 yrs too late lol.

@lorcresiakonopasek9793 2 жыл бұрын

Super brilliant teacher

@AK-no9jg 3 жыл бұрын

Why did the bag turn a different color? Also, did anything other than glucose, in the bag, spread into the water/IKI?

@mahrhaider5 3 жыл бұрын

it turned blue because of the presence of starch which diffused into the bag

@THEGOAT1TO3 2 жыл бұрын

@@mahrhaider5 starch was already in the bag so wdym? What diffused into the bag? Do you mean the IKI diffused in the bag, and if it did was it also on the outside of the bag?

@THEGOAT1TO3 2 жыл бұрын

It turned a different color due to iodine diffusing into the bag which mixed with starch and therefore the color changed.

@thehighpriestess8431 8 жыл бұрын

Thank you for your vid

@rivertowne6911 4 ай бұрын

IKI, water, glucose, dialysis tubing pores, then starch?

@DarkGalintor 11 жыл бұрын

size i believe, diffusion is affected by temperature, ph, and size... so im going to say size..

@erikhogan9140 7 жыл бұрын

This hitta Mr. Andersen is that hitta tho he helped me.

@SebastianGarcia-fv9ey 3 жыл бұрын

Did any IKI make it into the bag?

@michaelbratcher2153 3 жыл бұрын

Yes, thats why the bag turned blue.

@alexbowman2094 9 жыл бұрын

I kid I kid quite helpful

@MrRock2299 11 жыл бұрын

thanx alot really helpfull

@JulesStoop 11 жыл бұрын

Essentially you don't. Everything that can pass through the pores is smaller than the pores and everything that can't is bigger. So you basically end up with three sizes.

@ryangallagher2256 8 жыл бұрын

only watched cause science teacher made me......slept through 4:51 to end

@therealslimshadyxv9759 7 жыл бұрын

You sound like a genius....

@sahaanshyam26 4 жыл бұрын

Lol that's like the most important part lmao

@srbirajdar 11 жыл бұрын

pores in dialysis tubing.. how pores can diffuse?

@ScienceFan1859 7 жыл бұрын

pores = doorways. If you can't fit through door you can't diffuse out(leave) or diffuse in (enter). soulute & solvent diffuse. pores are the gateways

@shalissa9088 3 жыл бұрын

IKL Water Glucose Pores Starch

@mwatientaakeioata6220 11 жыл бұрын

Where does the blue colour come from ??? What is the significance of this colour ?

@ScienceFan1859 7 жыл бұрын

IKI, particularly I (for "iodine") turns blue when it encounters starch. I diffused into bag (therefore blue) but no starch could escape bag (too big to fit) so outside remained amber (non-starch color) ;)

@JessamynChiu 11 жыл бұрын

Smallest to largest molecule size is what he means.

@mrsl0305 11 жыл бұрын

smallest molecules to largest molecules, the smaller molecules will go through a permeable membrane

@ketsuekiuki 9 жыл бұрын

a video within the video.

@will88chang 9 жыл бұрын

Videoception!

@catherinechen7895 6 жыл бұрын

This is video Inception.

@waytoobiased 3 жыл бұрын

Old youtube holy cow

@xiiixiiih.16 2 жыл бұрын

What a good show . You look so cute.

@htuy42 11 жыл бұрын

You can still size them. As he said, you use logic and other knowledge :)

@JulesStoop 11 жыл бұрын

Ah. Well in that case :)

@xiiixiiih.16 2 жыл бұрын

Water III Glucose Pores in dialysis Starch ?

@xiiixiiih.16 2 жыл бұрын

Oh. I miss understood the question. I put what is ever made up of if using those ingredients greater than lesser. If there was more starch would that cause to much statick?