Photosynthesis Lab Walkthrough
Вставка
- Опубліковано 29 жов 2011
- Mr. Andersen shows you how to sink leaf chads in preparation for the AP Biology photosynthesis lab. An empty syringe is used to remove gas from the leaves before the lab. As the chloroplasts absorb light they produce oxygen bubbles which eventually cause the leaves to float.
Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: www.freesound.org/people/Cosmi...
Creative Commons Atribution License
The award for most appropriate choice of background music goes to...
The one dude who had hillbilly farmer music for the headphone review
When the beats drops at 6:08 and the chads start rising... #beautiful
Thank you so much
damn straight kiddo
me
whats the name of the music
chad
This was actually assigned for homework, the mediating leaves at the end made this worthwhile.
same bro
4 years later and they still steal the work from better teachers, that's why I'm here, homework.
@@WeAreBlank18 It's not really stealing. It's an incredibly common experiment and one of the easiest ways of measuring rate of photosynthesis. So common in fact, that it has its own measuring unit called ET50.
@@Tomfissh you took so long to answer me that I'm no longer in high school and even almost done with college.
@@WeAreBlank18 Congrats bro, did you do any more biology in college?
As a university student of biology, and now a student-teacher of biology. I seriously can't thank you enough. I've watched your videos for years as a resolution to my educational frustrations. You're the man, Mr. Anderson. Can't wait to get this lab going with my high school students.
Evan Shanes س
Evan Shanes sorry to hear that buddy
The first chad starting to rise at 6:09 was so dramatic, especially with the cymbal crash in the background
find your cat
JerusalemStrayCat the music really adds so much.
Mr Anderson you are saving my life in AP Bio :)
Brittany Gillespie oh snap
She jot
Hot
Same except its this year
bruh we're learning this in our basic bio class
The end helps relieve stress!
No one:
Master shifu:
"I must go my planet needs me"
Thanks a lot sir. These lab videos are really a blessing!
Thank you kind sir, I have been stuck with a college bio lab at the last week before the semester since the person that had agreed to do it backed out. I have taught the lecture for several years, but this is new and I am scrambling and can't find a supply of rennet or rennilase for the lab I was going to do, so this will be a fabulous replacement integrating the sci method testing different wattages or distances from the heat sink.
I drank the water and idk what was in it so I came to this video thank god its just baking soda
what were you thinking
HAHAHA
Lmao😂😂😂😂
Wouldn't want to damage your brain cell
Thank you! You have made the written lesson plan I inherited make sense.
My entire class got them to sink, but no one got them to float. We unanimously decided to pretend it never happened.
That music tho :DDD
It brought the biggest grin on my face. It just made the floating leaves both glorious and ridiculous.
Jan M. Jackie chu sml
That video was oddly relaxing and calm.....IT WAS MEGA AWESOME!
Got a biology assignement about this experiment. Thanks for the well explained and comprehensive video!
Did this for my Hw Thanks 🤣
SAME
Ooh, I like the music!
The only reason why I am passing AP Bio thank you
Thanks! Helped me a lot for lab tmrw!
This was brilliantly and beautifully explained, Good Sir. Thanks ! : )
Thank you mr. Bozeman Science. I will be doing this for my botany online class.
Excellent educational tools....yaa for eSciencelabs!!!Go Nick!
My students always cheer the chads as they rise- it is great to watch!
Today's my birthday and I didn't feel like creating a flowchart and copying down a procedure in my notebook! You saved me a good deal of time! Great pre-op! Thanks!
happy birthday
Mr. Andersen...Thanks for making me love Science...
Thanks for the video. Me and my teammates are looking for an experiment about photosynthesis and we're so out of ideas on how are we gonna put an experiment of it. Then my friend saw this video and it really helps... Now we're gonna use this for our experiment... The chads floating is fantastic... I like it :)
Summary of video: if you put light over plant cells, they can see the camera you are recording with. So, they fly away from the view out of embarrassment.
You're welcome for this true level of scientific knowledge.
Beautiful :,D Thank you Mr. Anderson!
Love your videos. Cool music.
Everbody gangsta till the leaf starts to ascend
@zombiegirl775 It was a stock clip from Apple's iMovie.
Man! Thanks! I love you! All my biology 9 class loves you so so much! my teacher is Brennan Van Loo, he also loves you. We adore what you do! XOXO
Awesome. I was totally cheering the little chad on.
Master Shifu could never.
How have I never seen this video before, yet it seems so iconic?
One of best ans practicle
great work
brilliant experiment!!!
so awesome. I wish you were my bio teacher.
What an amazing experiment! Go science. Where did you find this?
@LayPhysicist I think so too. I could watch floating chads forever. :)
The chosen one has been selected!
I understand that the rate of photosynthesis is the independent variable and ET50 is the dependent variable. But I'm unsure of how to determine the rate of photosynthesis of ET50. Please help!
I was forced to watch this as part of our pre-lab for our own Photosynthesis experiment...
I am really tired as I procrastinated, and I just wanted to get it over with _(side note: it was easy as took like 15 minutes)_
I watched this vid expecting to be bored, but I actually found it really interesting. Hope I do good at the lab tomorrow.
Omg that’s me right now.
One question, do you think that i could use this experiments, for proving that light is needed in the photosynthesis? :)
this is so cool
whats the song ypu had for the sped up part
I'm planning to conduct a similar experiment in class but I have one question: doesn't the presence of bicarbonate have an effect on the pH? Can this be marginalized?
Very helpful thank you!!!
can you show me how to graph and chart the results when you use 3 types of light, and you have with CO2 and without CO2 and you have to include the seconds
Adding this to my favorites because of the ending xD
So if you punch a leaf disk across a vein,is that gonna impact the results?
Ooops here where I understand the photosynthesis thourghly ... Great great job... Really thumbs UP ;)
Your are really good teacher thank you for teaching me :)
i just ate some spinich chads for lunch today, thanks mr anderson!
May I know why I cant get it float after i success to make it sink. Shall I put under sunlight
lol, the leaves at the end tho. that made my morning
Good video. I would like to suggest your get a camera that records higher resolution, it was a litte hard to see clearly
Doing homework in 2019 😵😦
@jediguy 12 😂
I need to do this at home, can I just use filter water instead of distilled?
cool music!
What kind of syringe was used?
5:20: Showing this video to my students to instill a sense of wonder!!!
What wattage lightbulb did you use?
i like the music!
Thank you SOOO much for this tutorial!! This helped me pass AP Biology :DD My
P.S : I love Leaf Chads
I got a question. Why some of the chads "rise up" faster than the others?
very good thank you
your so awesome thank you for this
how long did it take for the leaf to float off the ground?
nice video!
Is there a way to do this without a syringe ?? PLS HELP! My lab TA will not approve a syringe for my groups experiment
How about a shortened version of the video with just the floating chads that we could play on a loop so the students can watch it while they work!?
@NDfan369 how many AP classes are you taking?
what the control , independent and dependant ariables ?
What is the name of the end music so I can remember it and listen to it over again
Kai Umeda darude sandstorm
whats the name of the song played when the leaves are beginning to float?
womanizer by britney spears
Darude- Sandstorm
never gonna give you up - rick astley
ua-cam.com/video/dQw4w9WgXcQ/v-deo.html
this cool but how his phone stayed up is amazing
As I watched bubbles start to form on the leaf, I started wondering...how can you be sure that the bubbles aren't from the water - dissolved CO2 or O2 that was is the water in the first place? Could the leaf be providing nucleation sites for dissolved gases to grab on to? (apologies if this has already been asked and answered)
It's from the leaf because when it rises it starts to gain weight which makes it heavier and therefore rise to the top. It rises because it's taking in the carbon dioxide and producing oxygen from it. These bubbles would not form if it was not actively in photosynthesis.
Apparatus list:
• Hole punch
• 1 leaf
• 100 ml of water
• Syringe
• Beaker
• LED light
• Stopwatch
• Backing soda
Great video! It helps but you are a few labs behind us. It seems that I turn in a Lab Report a week before your video on that lab comes out! We just finished the Mitosis and Meiosis Lab in my class
Of course no need to change the way you do things for one class.
Much appreciated! Every time I watch one of your videos I feel like I am getting 1 step closer to getting a 5 on the National Exam
Thanks again!
Hi Mr. Anderson- My class did this lab, and I'm having trouble determining the dependent & independent variables, and the control. I assumed that the dependent variable was the number of chads, the independent variable was the amount of 02 in the chads when exposed to sunlight, and that the control was the amount of liquid in each cup. Is this correct? Thanks again for making these videos, they make bio so much more understandable!
9 years later, maybe for another student... This is not an experiment, it is actually the control. You have to compare this with another condition, which is your independent variable (amount of light, color of the light, temperature, etc). Then what you measure (the time at leaves start to float) is your dependent variable (which is proportional to the amount of O2 or photosynthesis rate).
Sorry if my english is wrong.
The video quality may be bad, but the content is great!
Hail Mr Anderson
Hi, just wondering what the volume of the syringe he used in the experiment? thanks!
10cc
love u mr bozeman
mr. anderson :)
what is the dependent variable is
Would anyone know the purpose of pushing on the syringe after you have pulling on it? We did this lab a couple of weeks ago and nobody in our class was able to get the leaf chads to rise after sinking them in the syringe. I was surprised at how fast those leaves sank for Mr. Anderson as when I was duplicating the experiment, I spent upwards of 10-12 min creating the vacuum in the syringe to sink even a few chads.
Pushes the water into the leaves
the photosynthesis occurs in the leaf chad and they produce O2 in the leaf cavity, increasing their buoyancy, thus rising it up
6:07
Chad: "I must go now. Farewell."
thx ms lin
I need to know what the song is when the chads are floating up
Helpful
can someone give me the dependent variable, independent variable, control group, experimental group, and the constant of this lab? Oh and also a hypothesis please.
Lmao, that music, so deep. xD
Pretty dope
#imwithher
can someone tell me the name of the song please?
I have to do this tomorrow
The ending tho brings back some childhood Jackie chan tv show memories