AP Biology Lab 12: Dissolved Oxygen

[tahseenshafiullah]

you were really helpful i got an A in bio

[heartlessvietboy]

Where does blood go after they draw (take) your blood? After they draw your blood, do they actually send it to the lab for extensive testing? Or do they keep it for the blood bank? Are labs at clinics and hospitals? Who does disease research? Where can we find those labs? Who does blood and genetic species research?

[tehabc]

An easier way to find the endpoint would be to use starch as an indicator. It's much easier to see a change from black-colourless than yellow-colourless

[cheshire4843]

I wonder if the amount of views your videos get skyrockets the weekend before the AP Bio test haha

[IAmMe4u2night]

I want your lab coat so very badly.

[phish4774]

anyone else start looking for a chat box when the video makes that little pop sound?

[scyfer327]

@phish4774 I looked at the comments just to see if anyone else was hearing this

[kengmeatleafer]

Hands don't talk! Lol :D

[kitzayitzay]

thanx for the help!!!!

[bhswarthout]

Do I have to wear headphones that make me look funny to do the DO lab.....also how do you talk without a head? Other than that you are amazing!!!!!

[onyana]

Your students are very lucky to have such a wonderful teacher. Is there a site online you can buy that dissolved oxygen kit?

[ossanamama92]

so at the end where you added the sodium thiosulfate, does that bond to the dissolved oxygens to reveal a clear color?