Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacademy.org/science/b... Introduction to viruses More free lessons at: www.khanacademy.org/video?v=0h...
"I can't imagine a more appropriate topic to make a video on." Lol. 11 years later, watching this during the coronavirus pandemic, it's a very appropriate topic.
This is what I missed when i was studying biology in school and eventually lost interest due to lack of visual elements to understand things better.. only textbooks with images never helped.. students today should really make use of this stuff to their advantage and learn better..
Its clear in all your videos that you love what you're talking about. The enthusiasm you have for teaching makes me excited to learn, and makes the information so much easier to retain!
I love the philosophical side of this. You managed to really creep me out and made me interested in the topic beyond having to study it. Thank you for all the hard work!
This man is actually the best teacher I've ever had in social media his accent is understandable he explains every detail so clearly and every time I watch his videos every detail remains in my memory. So I just wanted to say you're terrific thank you keep going we learn a lot
Sal, these vids are fantastic I use them for all my exams. Just wondering where you get one of those black screens with the diff colours from? would love to use one just to practice my exam stuff on. Thanks
This is incredible! You have a true talent for teaching and it is clearly evident that you are extraordinarily intelligent. I am a nursing student and it is killing me to be back learning basic biological cell functions and I literally sat here for 23:17 enraptured by your teaching! SO grateful for people like you, It just makes sense!
Awesome ! This is another world, a invisible world... That the most of the people don't have idea that this really exist, thanks for your good explanation.
Congratulations!! You have a great capacity to transmit knowledge. Also your diction is very good, and for us, english-as-a-second-language people the way you speak is completely understandable. Gracias amigo.
Thank you so much for the fantastic video!! It's a great way for us to understand about viruses. And hearty thanks to Salman Khan for starting up Khan Academy :D
when the cell surrounds the virus and you marked it as endocytosis, I thought that was phagocytosis? if you ever get a chance, can you clarify?? by the way, you do a super awesome, extraordinaire job at explaining and teaching, mega thanks to you!!
Well, I just came to this video out of curiosity and now I feel like as if I have not only understood the video, but even learned about Viruses and how they work then I've ever understood before.
Hello everyone, I have a question about PCR detection of a virus of other mikroorganism. I have been searching for the answer i both my books and on the web but not been able to find at clear answer. It's probably fairly easy to answer, i just what to be completely sure so i wont get a question wrong for the exam this summer. I know how the PCR tecnique works and obviously you should use reverse-transcriptase PCR (RT-PCR) for all the RNA virusses. My question goes: You want to detect a virus and found out which virus infection a patient have. You take a sample from where you assume the virus will be, maybe feces or saliva. Then you run your PCR or RT-PCR, but don't you have to run multiple PCR's with different samples because you don't know which virus it is? furthermore you must have specific primers for the virusses you suspect the patient is infected with. Am i totally wrong? the after you've run PCR, then what do you do? you have an amplified virus genome, but don't you need to do some sequencing to identify which exact virus the patient has? In other words how does the identification of a virus with PCR work?
In the military we have a saying "KISS: Keep It Simple, Stupid" Dumb down some of these video to make it a bit easier to understand. Not everyone, myself is one of them, can understand everything you are trying to explain.
You guys have to be able to respond exceedingly quickly, in your operational environments. It makes sense to keep things as simple as possible when you're downrange, but then you can do plenty the untrained can't before you even get there. Training you up took longer than it takes you to watch this video, in full. Think of this as part of your training program, and career virology as an operational environment. As difficult as you think this is, expect that things can get a lot harder when you're actually in the field. If you can't even get through basic, don't expect to excel in a professional environment.
"i take my genes personally, they define who i am" But then you say: "Are viruses life?" but they also have genetic material. So is life is about metabolism or having genetic material or both. Or is the genetic material just a definition of life?.
@rktguy No it's not just paint, paint is nothing like this. If you watch his CBS video you can see the pad that he uses with I imagine some sort of wonderful software program.
"Interesting" said the disembodied voice of Narnax. "Our scientists and philosophers have long pondered the question of whether cells and the organisms they construct can truly be considered alive." John raised what he considered an eyebrow. "Ours have puzzled the same question about viruses." from john Anderson's conversation with an Alkari virus in "The Virus"
If viruses aren’t alive how do they appear in the first place? Are they dormant cells already lying around that eventually we just happen to pick up and then the virus is able to carry out a cycle of infection and mutation, or does the virus cell come from somewhere like how is the protein layer formed around it if it’s not alive? Where is the genetic material originating from? So many questions
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"I can't imagine a more appropriate topic to make a video on." Lol. 11 years later, watching this during the coronavirus pandemic, it's a very appropriate topic.
TU! btw, i roast my own coffee sometimes. Your screen name just reminded me to order some green beans. Take care, stay safe.
I love this guy man.
I guess it's kinda off topic but do anyone know of a good place to stream new tv shows online ?
@Trey Zaire lately I have been using flixzone. You can find it on google =)
@Gunner Jonah Yup, have been using flixzone for since march myself :D
planned to watch this during the swine flu. watching it during the corona lock down. took 11 years.
I am also watching during lockdown
This is what I missed when i was studying biology in school and eventually lost interest due to lack of visual elements to understand things better.. only textbooks with images never helped.. students today should really make use of this stuff to their advantage and learn better..
Love your enthusiasm. Learned way more in 23mins and 17sec than the whole semester of uni. Thanks again for your videos!
23:16 Actually
@@feets186 yeap
it is
23:16
@@clp0btw459 lol thanks for the correction. 7 years later...
"i take my genes personally, they define who i am" that made me giggle
I agree!😊
Or it made the virus giggle
yeah... i cant take it when someone wants to get in my genes, and change parts of it!
lol same
I was just away to comment that 😂😂
Its clear in all your videos that you love what you're talking about. The enthusiasm you have for teaching makes me excited to learn, and makes the information so much easier to retain!
Probably because they're fascinating :)
Khan Academy HEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLLLLLLLOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO0OOOOOOOOOOOO0OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
Would it kill the coronus virus Cov19
Khan Academy yeah I’m switching from geology to biology specifically to go viral 😉🤦🏻♀️
Yesss. Now I know there is nothing good or bad about them. They r just some genetic code (a set of instructions).
Hi
I think it's wonderful how you always explain the material and I could feel how much you love biology. keep it up! this helps a lot.
im here for my honors bio class-
honestly this explained viruses very well, much better than what we went over in class!
I love the philosophical question you posed! Great videos. You did a great job explaining this. thank you
I love the philosophical side of this. You managed to really creep me out and made me interested in the topic beyond having to study it. Thank you for all the hard work!
i love how he gets a little philosophical in most vids xD keeps stuff interesting
I love how enthusiastic he is. Thanks to my biology professor for giving us the link to this video.
Are you a college teacher? If not, you should be! Your explanations are awesome, a 10 minute video is more informative than a 2 hour lecture.
This man is actually the best teacher I've ever had in social media his accent is understandable he explains every detail so clearly and every time I watch his videos every detail remains in my memory.
So I just wanted to say you're terrific thank you keep going we learn a lot
So glad I found this video!! you're an excellent teacher and the use of visual aids really helps me!!
Sal, these vids are fantastic I use them for all my exams. Just wondering where you get one of those black screens with the diff colours from? would love to use one just to practice my exam stuff on. Thanks
Very clear! Thank you for sharing your knowledge with us!
This is incredible! You have a true talent for teaching and it is clearly evident that you are extraordinarily intelligent. I am a nursing student and it is killing me to be back learning basic biological cell functions and I literally sat here for 23:17 enraptured by your teaching! SO grateful for people like you, It just makes sense!
Could not think of a more appropiate video in these times. Thankful for this today from Khan Academy.
This channel is really helpful! Thank you!
Loved your vid! Maybe you can cover some other disease causing agents such as prions, fungi, parasites etc.
love this video... it was simplified enough to connect the concepts... thank you very much
truly fascinating, and yes, the philosophical question it poses about what life is and what we are is remarkable. Loved your vid, tyvm!
I read the chapter but did understand as much as i do now after watching your video, really appreciate it
Very interesting and explained beautifully! Food for thought! Thanks for this.
Amazing amazing explanation!
Mindblowing.
Awesome ! This is another world, a invisible world... That the most of the people don't have idea that this really exist, thanks for your good explanation.
Congratulations!! You have a great capacity to transmit knowledge. Also your diction is very good, and for us, english-as-a-second-language people the way you speak is completely understandable. Gracias amigo.
Viruses are so facinating. And the theory that Viruses would have come from outer space is very interesting and makes a awesome plot for a movie.
khanacademy...making studying easier since 2006.
Very informative.
Thanks!
Thank you so much for the fantastic video!! It's a great way for us to understand about viruses. And hearty thanks to Salman Khan for starting up Khan Academy :D
great video thanks! I'm figuring all living organisms are similar in the way cells are produced when the organism is first formed.
Very helpful...thank you!
Thank you very much for this enthusiastic and informative presentation.
Thank you for translating the words in Arabic
beautifully explained. I could listen to this guy talk all day
"My genes I take very personally!" haha love these videos!
I absolutely MUST know what you're using to draw it like that!
Did you ever find out 😭😭😭😭
I love how he thinks!!! Thank you for this video!!
Great videos !!! Thank you ! :)
Bravo! Excellent explanation of viruses. It helped me tremendously and you explained it better than my instructor.
I got a sore throat and its creepy yet facinating to watch this, thanks :)
lol pacman at 9:04
awesome video as always Sal, keep up the good work!
Fantastic, your videos will act as a valuable resource to me now. Thank You.
cheeky lil buggas ain't they!
Shangrilaa lol
when the cell surrounds the virus and you marked it as endocytosis, I thought that was phagocytosis? if you ever get a chance, can you clarify?? by the way, you do a super awesome, extraordinaire job at explaining and teaching, mega thanks to you!!
very very helpful thank you so much!
That was beautiful. Thank you!
Excellent video for these times when some want to understand coronavirus!
This video just made Microbiology class so much easier! Thanks :)
Ahhh? Just for Endo and Fagocytosis, Viruses aren't alive.
Amazing video, very interesting.
Thank you so much, I will probably be watching a couple of these every day on a multitude of subjects :)
they were there before us and will be there when we are gone... Very helpful for my upcoming exam on moleculair genetics
This is awesome and very, very factual. I would advise u to ALWAYS go on Khan Academy! A stupendous app, it is the best 👍
great videos by khanacademy. i learnt various thing through these videos.Thanks
Amazing videos! Keep it up!
Thanks for sharing your knowledge!
beneficial.. thanks!!
Well, I just came to this video out of curiosity and now I feel like as if I have not only understood the video, but even learned about Viruses and how they work then I've ever understood before.
Hello everyone, I have a question about PCR detection of a virus of other mikroorganism. I have been searching for the answer i both my books and on the web but not been able to find at clear answer. It's probably fairly easy to answer, i just what to be completely sure so i wont get a question wrong for the exam this summer. I know how the PCR tecnique works and obviously you should use reverse-transcriptase PCR (RT-PCR) for all the RNA virusses. My question goes:
You want to detect a virus and found out which virus infection a patient have. You take a sample from where you assume the virus will be, maybe feces or saliva. Then you run your PCR or RT-PCR, but don't you have to run multiple PCR's with different samples because you don't know which virus it is? furthermore you must have specific primers for the virusses you suspect the patient is infected with. Am i totally wrong? the after you've run PCR, then what do you do? you have an amplified virus genome, but don't you need to do some sequencing to identify which exact virus the patient has? In other words how does the identification of a virus with PCR work?
Thank you very much,it’s very useful.
In the military we have a saying "KISS: Keep It Simple, Stupid" Dumb down some of these video to make it a bit easier to understand. Not everyone, myself is one of them, can understand everything you are trying to explain.
You guys have to be able to respond exceedingly quickly, in your operational environments. It makes sense to keep things as simple as possible when you're downrange, but then you can do plenty the untrained can't before you even get there. Training you up took longer than it takes you to watch this video, in full.
Think of this as part of your training program, and career virology as an operational environment. As difficult as you think this is, expect that things can get a lot harder when you're actually in the field. If you can't even get through basic, don't expect to excel in a professional environment.
thank you soo much, this was really really helpful!
thank you very much
xbvl349x
Thank you Sal ... fantastic xxx
anyone else have a bio exam coming up
Yes...but exam are postponed because of corona
@@tipspedia1463 sameee😂
Pure excellent explanations
amazing!!! thanks this helps me a lot!
Excellent video that clearly explains viruses
khan academy will alwys be the goat these videos are so good for any level
Yes Videos from 2009 are really helpful!
19:10 What's that red thing clinging to the white blood cell in the picture on the left?
phagocytosis is how its is spelled.
thanx a lot.
@Kahnacademy, do you do calc BC?
"i take my genes personally, they define who i am" But then you say: "Are viruses life?" but they also have genetic material. So is life is about metabolism or having genetic material or both. Or is the genetic material just a definition of life?.
I think viruses arent alive because despite having DNA they aren't able to carry out processes like replication without being inside of a cell.
I was assigned to report about viruses. I was assigned alone . Good thing i saw this! It helped much! :) thanks~~
Introduction to viruses
More free lessons at: www.khanacademy.org/science/biology/biology-of-viruses/virus-biology/v/viruses?v=0h5Jd7sgQWY
Doctor: we can fight this. Your HIV doesn’t define you
Patient: technically tho....?
Awesome video Khan!
could you make a video on immune and levels of defence in our body like three levels of defences..and information related to all that..........
I love Khanacademy!
I left this video. I came back 1 day later and it saved my spot!
haha. this guy actually makes me laugh during his lectures. :)
Excellent video!
Amazing explaination
@rktguy No it's not just paint, paint is nothing like this. If you watch his CBS video you can see the pad that he uses with I imagine some sort of wonderful software program.
Very nice video!!! Can you tell me which program do you use for this presentation?
Exceedingly practical in this period of covid-19.
Exelent! , you help me a lot!! :D
Viruses the most motherfucker things I have ever seen...
I came to look up the difference between +ssRNA and -ssRNA viruses but your lecture was so interesting I ended up watching the whole thing haha
so if they transfer some strands from replicating are they showing heredity??
thanks again!!
quite the complex symbiotic relationships
Fascinating explanation
"Interesting" said the disembodied voice of Narnax. "Our scientists and philosophers have long pondered the question of whether cells and the organisms they construct can truly be considered alive."
John raised what he considered an eyebrow. "Ours have puzzled the same question about viruses."
from john Anderson's conversation with an Alkari virus in "The Virus"
The best video I saw all over you tube
If viruses aren’t alive how do they appear in the first place? Are they dormant cells already lying around that eventually we just happen to pick up and then the virus is able to carry out a cycle of infection and mutation, or does the virus cell come from somewhere like how is the protein layer formed around it if it’s not alive? Where is the genetic material originating from? So many questions