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every time i need better understanding of a concept, I always youtube it. I seem to find your presentations over and over again and I have to say I always walk away with a much better understanding vs a text book or class lecture. Thanks!
I honestly think you have a photographic memory or can memorize a whole ton of information and truly outwit and teacher, by far one of the best teachers. Thank you very much!!
You are the BEST! I've learned so much from you as I work toward my nursing degree. My son (10) comes home from school every day and wants to do his "work" on Kahn academy...thank you!
you are the best . other channels are unable to explain this all with high animations but you do it with just words and handmade drawings . salute you .
Question about looking at bacteria under a microscope. So if your looking under a microscope and see rod bacteria in chains it could be streptobacillus. But anthrax is also a bacillus bacteria that grows in chains. I know strepobacillus is gram - and anthrax is gram + . But how could you distinguish to similar bacteria apart?
There has never been a video by this guy that I have not learned at least one interesting thing from, even for a topic I have never ever studied before. You should be EXTREMELY proud of what you are doing for education.
Although the famous notion that bacterial cells in the human body outnumber human cells by a factor of 10:1 has been debunked. And the concept today is that are approximately 39 trillion bacterial cells in the human microbiota as personified by a "reference" 70 kg male 170 cm tall, whereas there are 30 trillion human cells in the body. This means that although they do have the upper hand in actual numbers, it is only by 30%, and not 900%.. This video is GOLD, khan academy is one of the reason that many other sites those days are making a really admirable effort in the field of visualsing medicene and serve it to medical students and all kinds of persons that are intrested on it. So khan made a big step towards a new era and we are so thankful that people like Shall exist. GOOD JOB GUYSS!!!!
hey i love your videos they are full of information can you talk about structures of eukaryotic and prokaryotic cells and what is the program youre using ?
Anja Ceklic(Period 5) Bacteria Video... I liked this video and how the guy explained the different aspects of how bacteria work. I learned that in one human cell we have 20 bacteria and all the bacteria on and in us make us us. The drawing of the eukarya and bacteria helped me understand that concept better. A question I have is do we have antibiotics that target only bad bacteria and do not kill good bacteria as well?
Like at 6:35, he tends to repeat things as he types them. I find that this subconsciously REALLY helps me to retain the information. Khan is awesome. I have downloaded all of his videos for future reference. Thanks!
Waw ! You are very fantastic, and talented. Just like that it took you two seconds to draw a really good face that it would take me for example at least ten minutes. Very good explanation thank you so much !
I was reading up on Eukaryotes vs Prokaryotes which brought me to your page on The Difference Between Bacteria and Viruses which gave me a link to this page and am thrilled I came. You are so interesting to listen to and your 'course' is so fascinating. I've never watched a video on viruses that was so flawlessly and easily demonstrated. Your passion shines through and makes it all the more interesting. Kudos on clarifying and illustrating a subject that can quickly get extremely intricate. Loved every minute of it! Thanks so much.
I really hate to waste food but this experiment may help you to understand germ theory. If you take piece of bread and firmly press your index finger of your unwashed hand on on corner and then a properly washed hand's index finger on the opposite corner and wait a few days, I'm certain the corner that has been touched with a unwashed hand will look, moldy and defiled (don't eat the bread, throw away promptly afterwards)
SHANTI - I would like to learn more about the mutations of bacteria when the genes are switching back and forth and how this works. I think that it is very interesting that for every one cell in our body we have 20 bacteria!!
Have you ever made the notes, what the Kahn academy instructors write and draw during their explanations into pictures? I just pictured these notes as one as you scrolled up, and I thought it would make a useful pin on Pinterest! Ha, but thought I should speak up just in case.
I don't really understand what you mean. by positive or negative do you mean Gram Positive (blue or purple) or Gram Negative (Red or pink)? I'd imagine not all cells would be able to absorb crystal violet or saffarin. This sounds like a question for my Micro prof! I do know that they all have a barrier surrounding them, though, in some capacity. How else would they keep in the cytoplasm in and all the bad stuff out?
I am sorry that your three schools were ineffective for you. I appreciate my education and the system that delivered it. It did not hurt that I have had a few outstanding teachers. Your mileage may vary.
Great video. Only updating the information on the proportion of bacterias and cells in our body. It's about the same: 30 trillion each. Source: report from Israel.
Just one thing I thought should be clarified: The majority of prokaryotic organisms have cell walls. That means that both Bacteria and Archaea do *tend* have cell walls, but they're not made from cellulose (so they're not the same as the ones you'd find in eukaryotic plant cells, for example).
omg, how did your handwriting improve? Tablet PC? Or just prowess? By the way, is Khan academy being maintained by a group of people or is it just by you?
11 years later, here we are.
11 years an 7 months here WE are
11 years and 10 months later, here WE are
make it 12 lol
12 years later, WE ARE HERE
12 years
I find it crazy that he can literally teach any subject, let alone being amazing at it
what I was thinking... really crazy.
ALI NHL 63 lol
Exactly , I expect a different voice every time I open a vdo of a different subject and there he is , being all glorious and what not.
CryptoAli I know been listening to him for years and I am still in awe
Casually draws out a masterpiece while explaining bacteria haha!
indeed, I was astonished too
every time i need better understanding of a concept, I always youtube it. I seem to find your presentations over and over again and I have to say I always walk away with a much better understanding vs a text book or class lecture. Thanks!
9 years later, what's up bro how did u do in life ?
I honestly think you have a photographic memory or can memorize a whole ton of information and truly outwit and teacher, by far one of the best teachers. Thank you very much!!
That was a really good drawing of the human head wow
TheCrazyMango82 right??!
TheCrazyMango82 yeah
Came to the comments literally just to see if anyone else was suprised at his drawing skills
You are the BEST! I've learned so much from you as I work toward my nursing degree. My son (10) comes home from school every day and wants to do his "work" on Kahn academy...thank you!
These videos are really helping me to study. I was so impressed when he drew the face!
What an excellent video, I am doing my pharmacy technician qual in the UK and this has explained things greatly!
We need teachers like you at schools
haha "the bacteria is recording the video". Thx bacteria!
me and all bacteria in me would like to thank you and your bacteria for making this video. God bless you, and your bacteria
you are the best . other channels are unable to explain this all with high animations but you do it with just words and handmade drawings . salute you .
out of every learning channel and website urs is the best u xplain stuff awsomely
sir. i have recieved a lot of appreciation in class from these lessons.
Question about looking at bacteria under a microscope. So if your looking under a microscope and see rod bacteria in chains it could be streptobacillus. But anthrax is also a bacillus bacteria that grows in chains. I know strepobacillus is gram - and anthrax is gram + . But how could you distinguish to similar bacteria apart?
YES. Do a Debate playlist!
There has never been a video by this guy that I have not learned at least one interesting thing from, even for a topic I have never ever studied before. You should be EXTREMELY proud of what you are doing for education.
It was really interesting Sal!!! Thank You.
Great video. Thanks. I hope you are going to continue this?
Amazing. I never really understood the bacterium criteria, but thanks to you, I do! Thank you! :D
Although the famous notion that bacterial cells in the human body outnumber human cells by a factor of 10:1 has been debunked. And the concept today is that are approximately 39 trillion bacterial cells in the human microbiota as personified by a "reference" 70 kg male 170 cm tall, whereas there are 30 trillion human cells in the body. This means that although they do have the upper hand in actual numbers, it is only by 30%, and not 900%.. This video is GOLD, khan academy is one of the reason that many other sites those days are making a really admirable effort in the field of visualsing medicene and serve it to medical students and all kinds of persons that are intrested on it. So khan made a big step towards a new era and we are so thankful that people like Shall exist. GOOD JOB GUYSS!!!!
hey i love your videos they are full of information
can you talk about structures of eukaryotic and prokaryotic cells
and what is the program youre using ?
These videos are amazing !!!
Anja Ceklic(Period 5) Bacteria Video...
I liked this video and how the guy explained the different aspects of how bacteria work. I learned that in one human cell we have 20 bacteria and all the bacteria on and in us make us us. The drawing of the eukarya and bacteria helped me understand that concept better. A question I have is do we have antibiotics that target only bad bacteria and do not kill good bacteria as well?
Like at 6:35, he tends to repeat things as he types them. I find that this subconsciously REALLY helps me to retain the information. Khan is awesome. I have downloaded all of his videos for future reference. Thanks!
Waw ! You are very fantastic, and talented. Just like that it took you two seconds to draw a really good face that it would take me for example at least ten minutes. Very good explanation thank you so much !
wow this is great. thanks so much!
Thank you very much for this information.
شكرا....انت الافضل
I was reading up on Eukaryotes vs Prokaryotes which brought me to your page on The Difference Between Bacteria and Viruses which gave me a link to this page and am thrilled I came. You are so interesting to listen to and your 'course' is so fascinating. I've never watched a video on viruses that was so flawlessly and easily demonstrated. Your passion shines through and makes it all the more interesting. Kudos on clarifying and illustrating a subject that can quickly get extremely intricate. Loved every minute of it! Thanks so much.
thanks to this my son understands this topic way better thanks khams
can you make a video on electron transport chain in prokaryotes ? it would be of great help :)
pretty sure i would adopt any stance Sal takes on any debate, ever
you should of mention how we classify bacteria (shape,cell wall,respiration).
But still pretty solid video. Thanks
Great video, thanx for sharing it with us!!!
shouldn't endospores be mentioned ? still a great video, thanks :)
well said, That startrek episode sounds a little like SG-1 and the goa'uld.
Most beneficial channel on youtube
you sir gave me an A+, you have a new sub.
What are antibiotics made of? Are they prokaryotes as well?
awesome presentation
Thank you so much helps with school
What do you think of fix your bacterial vaginosis issue naturally with Womezon Remedy? I see a lot of people keep on talking about Womezon Remedy.
Thank you Khan Academy
this is awesome!!
that star trek episode was where everyone started appearing drunk, right? Also, that drawing of a person is so good lol
I can just watch uand get home schoool u teach basically all u need to know in science
Thank you Sir
Its really very interesting
I really hate to waste food but this experiment may help you to understand germ theory.
If you take piece of bread and firmly press your index finger of your unwashed hand on on corner and then a properly washed hand's index finger on the opposite corner and wait a few days, I'm certain the corner that has been touched with a unwashed hand will look, moldy and defiled (don't eat the bread, throw away promptly afterwards)
Thank goodness there aren't any posts with Jevil in them
BACTERIA
He does so good at making his videos somehow not boring even if it is seemingly the most boring subject :)
SHANTI - I would like to learn more about the mutations of bacteria when the genes are switching back and forth and how this works. I think that it is very interesting that for every one cell in our body we have 20 bacteria!!
Sal sir draws like a pro! x'D
I think this is very cool knowing that so much of us is made from bacteria and how we must fight off so much bacteria. -Sydney
Khan is the best!!
Thanx sal I am glad from you
There are a few video about plants.. Will you make some?
Have you ever made the notes, what the Kahn academy instructors write and draw during their explanations into pictures? I just pictured these notes as one as you scrolled up, and I thought it would make a useful pin on Pinterest! Ha, but thought I should speak up just in case.
Sal really needs a full course of Microbiology.
excellent video
Why haven't you uploaded a video to CZcams in two years :(?
What program do you use to write and record
Sal: " *Lyme Disease* "
* *ironically writes in a light green color, commonly known as lime* *
12:45 It's called "conjugation", Sal. The fungi do that form of reproduction as well.
@Beray Uzunbay RIGHT
I don't really understand what you mean. by positive or negative do you mean Gram Positive (blue or purple) or Gram Negative (Red or pink)? I'd imagine not all cells would be able to absorb crystal violet or saffarin. This sounds like a question for my Micro prof! I do know that they all have a barrier surrounding them, though, in some capacity. How else would they keep in the cytoplasm in and all the bad stuff out?
protozoa, fungi and algae please!!
@khanacademy can you please do a video on genetic engineering, I think
it will be very interesting
Are the sprinklers going off in the background?
HE'S SO GOOD !
hyyy that's a 10 year old comment omg😀
I would love to see a playlist in which you DO take sides in the debate.
I am sorry that your three schools were ineffective for you.
I appreciate my education and the system that delivered it. It did not hurt that I have had a few outstanding teachers.
Your mileage may vary.
you explain wery well. you are great
@HarashAhmed i think Sal uses a Pen style peripheral pad .
you sir are awesome.
Can you please do a video on fungi/fungal reproduction? It's a core component of many bio courses.
Great video. Only updating the information on the proportion of bacterias and cells in our body. It's about the same: 30 trillion each.
Source: report from Israel.
With what program and "pen" was that Video made?
he is even good at art!!!! anything this dude can't do?!?!?!? haha legend! 16:52
"god forbid"
lmao yokes
What application are you using?
I love this guy he is the best
HOLA, HAY VIDEOS EN ESPAÑOL?
Sir i wanted to have the explanation of nutrition in bacteria
You can also explain bacterial conjugation like trading pokemon cards for the younger audience
@Chitownboy1023 increased the resolution of his tablet, handwritting didnt change
U are amazing.😍😍
HOLA, HAY VIDEOS EN ESPAÑOL?O SUBTITULADOS
Your a genius!
'I don't wanna say primitive cuz that's making a value judgment on these guys."
Haha, love this guy!
Thanks
Which program you are using?
Just one thing I thought should be clarified:
The majority of prokaryotic organisms have cell walls. That means that both Bacteria and Archaea do *tend* have cell walls, but they're not made from cellulose (so they're not the same as the ones you'd find in eukaryotic plant cells, for example).
omg, how did your handwriting improve? Tablet PC? Or just prowess? By the way, is Khan academy being maintained by a group of people or is it just by you?
For most bacterial cells, the cell wall is critical to cell survival, yet there are some bacteria that do not have cell walls.
Now I start to dislike my professors from college
the voice is perfect master!!!
yes keep it up you helped me pass a test for school