Biological Molecules - You Are What You Eat: Crash Course Biology #3
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- čas přidán 26. 07. 2024
- Hank talks about the molecules that make up every living thing - carbohydrates, lipids, and proteins - and how we find them in our environment and in the food that we eat.
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Crash Course: "Helping Kids Cram For Their Exams Since Day One."
OsiriaCH Amen to that!
Nah, I learn them for fun!
@@youngphysists9857 what did the quarantine do to you?
I learn them for fun too
Let me just say: God bless this brilliant man and his brother for teaching topics in 10-15 minutes that teachers needed weeks for. No offense teachers.
He literally explained a two hour long lesson in 15 minutes im shook
same
I'm shook to the ground
Agreed, I had a few different lessons to learn about these lol
he explained a 4 hour long lesson in just 15 minutes
Its not detailed enough tho
I keep on getting med school ads on these bio videos and I'm like... Dude... I'm just tryna pass grade 10 calm down
It's like dayumn lecturio chill
MOOD
How’s grade 11 treating ya?
@@snowlover11 ap biology gets significantly harder trust me
AU 14 shut up guy
Started watching this my freshman year in high school, now I'm watching them my freshman year in college.
I've been watching these since 7th grade
I'm watching them in my senior year in college in order to pass the TOEFL.
I remember watching this in Bio 1 back in 2017 as a first year bio major at 22 years old who finally decided he wanted to be a doctor after years of part time jobs and part time community college classes 😂, skip to January 2023 and I’m here casually reviewing as a first year med student 😂 cmon guys! You got this, there will be horrible days, good days, & great days.
Best of luck! ❤
PS- thank you crash course, thank you so much ❤❤❤
Im almost 50 years old, and just passed all my prerequisites including A&P 1 and 2 and Microbiology. You have to pass the TEAS test to get into the program. Im here in March, 2020
It has been eight years since this video was uploaded. I watched it for the first time about four or five years ago, when I was in high school. I prepared for the biology exam by these videos. I wathced this course when I was on the first year of medical university. And now I'm watching it again. I'm already finishing the third year and I teach biology scholars who, like myself some time ago, are about to enroll a med university. This is awesome. Thank you, Hank, and thanks to all of the CrashCourse team for this truly the greatest course of biology ever made.
I'm a computer scientist that migrated to bioinformatics and now I need to understand all this background in order to do my phd research, so yeah...you're not just helping high school people here but also researchers on a higher level. What you guys do is amazing. Thank you!
"You are what you eat" .... I'm human.. *stares menacingly*
:D Homestuck fan!
David Gardner What makes you so sure that you are human?? :/
Thats why im pussy
David Gardner I'm a "humanitarian"
Well looks like I'm a capitalist pig XD
Trying to test out of bio 101 so I can eventually get my third degree: NURSING (thanx Hank)
Along with that here is what I quickly typed down as a sort of SUMMARY, feel free to fix:
William Prout discovered our stomachs have hydrochloric acid and discovered chemical composition of urea. Also discovered food is divided into carbs, fats, and proteins
Carbohydrates are the source of all energy
Carbs are made of sugars with the simplest being monosaccharides
Glucose, a monosaccharide, number 1 sugar that comes from the sun
Fructose, same chemical as glucose, but arranged differently, and is sweeter
Disaccharides are two monosaccharides put together
Sucrose, fructose and glucose connected, is a disaccharide joined by a covalent bond
Polysaccharides are thousands of simple sugar units
Cellulose is a bunch of glucose molecules
Bread is made of starch and amylase
Our bodies store carbs in form of glycogen in our muscle until we need to use them
We store our energy long term through fat aka lipids
Lipids are non polar and can’t dissolve in water
Fats are made of glycerol and fatty acids
Saturated fats don’t have double bonds, while unsaturated fats do
Trans fat do not exist in nature and are unsaturated and bad for the body
Omega 3 fats, unsaturated, are essential but we need to eat them in order to get them
Phospholipids form cell membrane walls to keep bad stuff out and good stuff in
Phospholipids are one end polar and one end non polar
Steroids, a phospholipid made of 4 carbon rings, are used to make cholesterol
Proteins of made of 20 amino acids which do everything for the body
Nitrogen can only be gotten into our bodies from food, via foods high in protein
Polypeptides are formed by long chains of amino acids
The 9 essential amino acids, which are bodies can’t make on their own, are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine
Thank you!! You just saved me from meh BIO exam revision cram stresssssssss...
I'm trying to test my bio skills to see if I can do a second degree in Nursing 😂 did it help you in the end??
Thank you sooo much!!:D
This really helps! My teacher only lectures and she skips a lot because we "are already supposed to know it" and we are expected to know 10x the information she actually gives us.
this helped me get an A on my thrid bio test. god bless hank green and the CC team
+Alexandra Paige i wish i was u. this video is giving me too much specifics i don't need to know. can never find the perfect video...
...man, i wish my teachers could be youtubers
+Alexandra Paige to me it wasnt specific enough and i failed
+Alexandra Paige I have a test tomorrow and this is most definitely not enough information which is why Im about to read and take notes out of my textbook on the entire unit as my teacher sucks which is why no one in my class knows it in the first place
Yextus ikr
+Alexandra Paige TRU
helped with my bio final!
have a test today and am watching this before i get ready for school. what would i do without you guys
+Sarah Holland Study notes, textbooks, etc.
Lord Tranquil i do that as well for at least 4-5 hours a night before a test and at least an hour each day to prepare in advance, but my teacher is 65 with dementia and has no idea how to teach us, so unfortunately i have to rely on outside sources such as youtube. we don't take notes as our teacher doesn't teach, and textbooks can be hard to understand from without someone to guide you through the material.
Sarah Holland Our teacher for bio is great but his tests are hell on earth
+Lord Tranquil could we be having the same bio teacher?
+OG_NEXUS nah just that a lot of bio teachers are like that, unless your teacher is named Kevin Kasper and you go to University High School
Hank you're saving me on my Honors Bio exam tomorrow bless you ily
I am cramming for my Honors Biology Final that I have tomorrow.
omg same
me too
+LYNXisSUGOI Me too
How did you guys do
Who is watching this with me in the age of COVID 19?
And hello all who are learning this for learning and not passing your tests.☺🐤🐳
I do this for learning yes, while eating. Just saw him drink his artificial pee. next
me
I’m watching this so I can pass my bio test
I am just for the knowledge!!
Same here,Doing Science and trying to finish science so I can draw
Watching every one of these videos for final exam tomorrow because my biology teacher sucks.
Literally in the same boat but it's for my IB exam. RIP me...
ya
Oh my god I feel you on that.
My middle school biology teacher knew little about biology. The only reason he was teaching us biology was that the subject he was supposed to teach was no longer needed, which was Russian. You know, China and Russia (Soviet) aren't that close any more.
... tell me about it
I have a bio exam tomorrow, and listening to this playlist while studying is helping a lot. You're the best teacher ever!
Man even the subtitles got jokes
ikr
Lol, hidden jokes.
HANK IS HELPING ME BECOME A DOCTOR. THANK YOU HANK YOU MADE THIS SO MUCH BETTER!!!
I'm taking biology for the first time, as a college student (yes, I wimped out of it during junior high -- I was homeschooled and relatively unsupervised). I've been using these videos to complement my textbook, and the results have been awesome. Anything that that the textbook doesn't explain, this does, and vice-verse. I was having the hardest time understanding the still illustrations of molecules (my brain essentially goes "NOPE" and shuts down whenever it sees something like that), but seeing them actually play out in video forms like this while being explained in such an accessible way has helped tremendously.
TL;DR: Thank you so much to the Green Brothers and everyone involved for doing Crash Course. I would be having a *much* harder time with these subjects without it.
This is the only way i'm passing college. Thank you.
+Ashten Pickens college?? Does this come back or something
+Denzel Banks It comes back with a vengeance.
+Ashten Pickens yeah it does
+Zico Gyal Is this information really enough to pass the collage with good grades?
+#EVERYONEK no
i have a big exam and ima watch this over and over and over again.
god im failing ap biology, by the power of hank, help me pass!!!!!
same
SAME THO
AHHHHHHHH SAME
lol I got four 5s and a 4 last year
tatezi lol im a freshman and im failing pre ap bio
Our biology teacher is lacking some serious teaching skills. Nearly EVERYONE in my class has stated that her methods of teaching are confusing. I keep telling fellow students to watch these crash course videos because they help me out A LOT! My teacher has heard me say this a few times. Once, after she spoke about cellular respiration, I said that crash course did a video on it that helped me understand all the parts involved. She shittily replied that if "colorful internet videos" where the only way we could learn, then maybe we should not be in her class. I don't think she likes me very well....
+Judge Judy haha some teachers just get worn out don't worry shes probably developed brain cancer :P
its cool u find another resource to learn biology...but even your teacher is really really bad at teaching, you must respect her/him. yre sorta offending her when u keep saying there's someone better than her. She felt unappreciated. Peace :D
I know, I try really hard to respect her... however, I am the one who is paying her a lot of money to teach me, so I sorta wish she was a better teacher.
+Judge Judy My teacher is the same way, Im starting to think I know more than him from stuff I learn in my free time
Lol...
Ive been studying carbohydrates for a few days, and the molecular representation this video provides IS SO HELPFUL. THANK YOU.
"When I eat this, and I'm gonna eat the HELL out of it..." Never in my life did I imagine I'd be laughing hysterically while learning about biology.
Wonderful information. Usually I speed the video up to get through the blah, blah, blah. Here I need to slow the video down to absorb so much information. And you're just geeky enough to be authoritative. Thanks...
The captions guy put "[Hank so smart!]" at 1:28
+True Music Reviews yeah.
+4571police lol i paused n came 2 de comnt sec 2 c if anyone commented bout dat
+4571police This happens quite often in his videos...in his last video it was the "[Seriously...]"
Unlike apparently a lot of people in the comments, I am not watching this for school- just for my own education. I love how Crash Course mixes education with comedy. Thank you very much for this video and. of course, every other video made. You are all awesome and helping people become just that little more knowledgeable. PS. "All for me" had me laughing for a worryingly long time hehe
Get over yourself girl we are all one and the same...
I didn't mean it to be offensive but hey if you want to take it that way go ahead :)
I'm watching for my own Education to and for fun
***** I meant "the same" in a deeper sense,but I get where you're going. That would be unfortunate.
hank slipped again at 10:40 when he said that phospholipids combine with cholestrol to build cell walls. I think he meant membrane
yeah he fixed it but u can only view that on a pc or desktop
lmao i was watching this for my ap bio class and then i dropped the class, read the comment i wrote and was what tf was I even talking about. like if i went back and watched the video i wouldn't have even noticed the slip up lol
your second comment made me laugh so hard hahaha that's exactly me when I'm done with the semester
lol this is so funny xD
As a nutrition professor, thank you for this! Such a great resource for students!
My bio teacher is well-known for not paying attention to any of her classes except chemistry, and then at the end of the year, giving out candy to all of her other classes and apologizing for being a shitty teacher. Of course, that does nothing to raise my grade in her class. But these videos do. Thanks so much y'all for helping me understand this flipping course.
lmao I'm so sorry
+Shivangi Singh gggggg
biology is my life
My bio teacher is well-known for not paying attention to any of his classes, only paying attention to the track team, and giving out no candy and no apologies. :(
10:22 should be cell membrane. Plants have cell walls.
+x Broskee he made that correction
Sorry, was it in the annotations? I always turn them off before the video starts.
Thought I was the one getting them mixed up....
Hank, could you just come to my college and take over for my current professor? I swear I learn more from your 15 minute videos than I do from my professors 50 minute lectures every week.
studying these videos to hopefully get a head start for college-wish me luck as a biology major
That remark made at 0:51 just got a whole lot more grim
I wish this guy were my bio professor, I would be doing so much better.
Was introduced to crash course in my AP World History class when I was a freshman in high school. I am now 24 and just watch these for enjoyment 💀 thank you for your hard work!
I love this guy! I watched his stuff when I had an Anatomy class and now that I have microbiology, he's my go-to! Keep making videos, you're an amazing teacher!
Thank you soo much for making these videos they REALLY help me!!! I grasp a lot more info from this than from my biology teacher
If you have AP bio tomorrow clap your hands!!!!! If you have the test tomorrow and really want to show it clap your hands....
*clap* *clap*
This is so cute hahahaha
Yep. Hope I pass.
*clap clap*
@@fufumccuddlypoops5502Go luck everyone
Man you help me in high school and college to pass my bio classes 😅 thank you
I AM BEGGING YOU. PLEASE MAKE A BIOCHEMISTRY SERIES. Your videos has saved my butt so many times.
Seriously hank is the best I'm going for my bachelors in microbiology and these are beyond helpful.
They say you are what you eat... I don't remember eating a fucking legend.
Watch out, we have a badass over here
Weird, I don't remember eating humans...
Regnberg I don't eat humans... :O
i disagree with your name roblox has been out since before minecraft. I remember playing it when i was 8 years old and im 16 now. and mine craft came out when i was 11
Kevin Collins many factual errors
I keep getting directed to your videos for my nutrition courses - now I get excited when I see your face pop up because your vids are WAY more entertaining and enlightening that anything else out there! Thanks for your efforts!
you pack so much information into one video it's great. love crash course very educational and makes learning more enjoyable, even though i have to pause and re-watch sometimes to keep up.
I'm taking physiology at the moment and this video helped. I just saw that you guys started a Anatomy/Physiology course and I would suggest when going to macromolecules (biological molecules) to include the 4 main ones for physiology. Carbohydrates, Protein, Lipids, and Nucleic Acids. Also when going into protein, include the 4 structural levels...primary,secondary,tertiary, and quaternary. Just a bit more deep into them when going over them in the physiology course. Overall, I am loving this channel! Happy that you are beginning to teach Physiology since I'm going to need review videos to watch when studying! Keep it up guys! :)
I'm just here to learn on my future biology class.
Same
you better get ready then this is not easy
Im here to jack off to that white sexy beast
wt?
luke the Duke tf?
Thank you Hank green you weirdo genius 😭👏🏽
I love how all of these comments are from students trying to study for a test and I'm not even in school I'm just genuinely interested
same lmao i dont even have biology
I find the words "fatty acid" funny.
my life would be impossible without this channel, you guys are awesome!
Thank you CrashCourse, thank you for this brilliant idea of refreshing courses in a nip of time. The humour in them makes the tutorial a very dynamic and happy experience.
"I'm sure it's gonna be delicious..... nope" made me laugh so hard xD
I hope you know that I not only enjoy the hell out of your bio101 series, but I am using these video to brush up at school. It is helping a lot and I hope to see many more of these types of videos. After all, you seem to know a great amount on the matter.
I rely on Hank to help me pass A level Biology
Trust me he alone can't help you pass , you need to look with in yourself , contemplate on the matters at hand , do your past papers , revise and study the book (though not too much :p) and just chill , read a novel ... watch tv or netflix , believe in yourself and well you're up for the challenge , watch crashcourse , bozeman science and khan academy videos and you'll be whipped into shape
@@hellraizer8311 pep talk! :D
@@niyathi64 what works, works
@@hellraizer8311 😀
I love you! Biology was one of my least favorite subjects in high school. It was just really boring and I never could get into it. Now as a college student thanks to you, I love it!. You put things in a way that makes Biology super interesting. Thank you!
Thanks for sharing! Such a good summary - I always share these with my students to help them understand the topic outside of the classroom :)
Thank you for the videos. You have helped me grasp concepts. I really appreciate your humor and wit. You're just great!
Notes:
Indigence for life: Biological molecules: sources of energy, storage of energy, instruction (to born, grow and pass on)
Food: synthesized or ingested
Carbohydrates, Lipids, Protein, nucleic acids
Carbohydrates:
made of sugars: chains with different lengths
simplest: monosaccharides (one-sugar): like glucose and fructose
Glucose: energy of the sun captured by plants through photosynthesis
Respiration: cells getting energy from glucose
Disaccharides (two-sugars): like sucrose: made of glucose and fructose
Polysaccharides (long chains): structural compounds that store energy: cellulose, indigestible
Starch: plants way of storing glucose: like amylose (is like cellulose)
Humans way of storing energy:
Glycogen: short term storage, for a day without eating, made of left over glucose, stored in muscles and liver
Long term storage...
Lipids/Fats:
Non polar, don't mix with water
Made of: glycerol (kind of alcohol) and fatty acids (carbon-hydrogen chains)
Triglyceride: 3 fatty acid chains stuck to a glycerol
Saturated (solid) and non-saturated (like oils) with hydrogen (straight structures allow more hydrogen bonds, non-saturated if there are more carbon bonds)
Trans fats: unnatural and dangerous, unsaturated with straight carbon bonds instead of bent ones
Omega 3: unsaturated fatty acids
Phospho-lipid: Cell membrane walls are made of : 2 fatty acids and a phosphate connected a glyceral , one side hydrophilic (polar side) and the other hydrophobic (non-polar side) so when in water, their hydrophobic ends face each other, that's how cell walls are made
Steroids like cholestrol: with carbon backbone, also in cell walls, they can be activated to turn into lipid hormons
Protein (made of amino acids: carboxyl group NH2 and amino group COOH on both ends and H and and an arbitrary R group in the middle):
Complicated chemical compound, elaborate and elegant structures
Enzymes: regulating chemical processes and digestion
Antibodies: connecting themselves to invading bacterium and viruses
Endorphins: in brain, emotions
Nitrogen (80% of the air), needs to be in our food
R group is the side chain of amino acids that determines the function (20 known types)
Valine: protecting and building muscle tissue
Tryptophan: mood and energy regulation
Protein sythesis requires the 9 necessary amino acids: Lysine, Histidine, Threonine, Methionine, Valine, Isoleucine, Leucine, Phenylalanine, Tryptophan (, arginine)
thanks a lot
Nice
bless hank for eating an egg and peanut butter sandwich in the name of science
Thank you😭 I'm beyond grateful for this channel. I just wanna cry
"It's going to be absolutely delicious...... NOPE"
guys cant you do a crash course for physics.
your science can be fully complete if u do a crash course on physics the other two need physics for the go.
plus it wold be a GREAT help for the viewers!
PLZ
there is already one for physics
Wow, I remember when these first came out 7 years ago! I was so excited. I still love them today!
thank you for everything; you make learning science FUN!
This literally taught me more than the 11th grade, as an A grade student I feel quasi-qualified to make that assessment.
It weirds me out that these videos are 4 years old
Right?! Remember when they first started crash course?? It doesn't feel like it was that long ago O_o
Emily Snell And I replied to your comment 9 months later. :)
Emily Snell well now it's 5 years old
6 years now :o
yup
I REALLY appreciate your ability to teach with humor! Keep doing what you are doing! and...THANK YOU!
Hey, Had to do an A-Z on this (where you have a word or a phrase for every letter of the alphabet based Ina particular topic) helped so much! ❤️
Just wondering if anyone had any suggestions for B,J,K,Q,X,Y, &Z
Thanks x
our school decided to skip two grades in our science curriculum so now we 8th graders are taking exams on 10th grade bio, chem and physics that we don't even take in class, so these vids were a live saver
I hope that was Apple Juice
OMG I was literally scrolling through the comments to make sure no one else commented that so that I could
@@lemn_emiee Saaaame...
IT WAS APPLE JUICE YOU CAN CALM DOWN
This channel is the key to me passing multiple classes this year
These videos are entertaining and informative and helping me a lot in my anatomy and philology class. Thanks!
Important Clarifications:
Fats are also known as Triglycerides
Proteins are also known as Polypeptides
I wish you luck Hank
sooo amazing the structural formulas shown are also sooo easy to comprehend in such colorful way
Thanks for making these videos.
Thanks! Videos are really helping me make sense of my biology class
The transition from lipids to proteins was so understated that I thought proteins were lipids. Perhaps a better transition is in order?
Your humor is awesome! Makes the learnimg process fun. Thank you.
These videos are a very accurate representation of how quickly my professor breezes through chapters and chapters of biological processes. It's very frustrating. But I love this channel, it's like having lecture on repeat so I can nail this stuff to the walls of my brain.
this guy right here saved my life when it came to science tests thanks
That loaf of bread looks so damn tasty
please make a detailed one on proteins. i completely love the way you explain, it makes chemistry to easy to understand.
I have watched the crash course videos to get through A&P 1 and 2, Chemistry, psychology and now using it for biology. I feel like I am really getting to know this guy. Is it weird to love someone you have never met?
oh thank you!!! your are a great teacher, my moves on so fast so... i am happy to come and take extra notes from your videos and your are funny that makes it better. thank you!!
is it me, or does it seem like crash course is bozeman science but actually entertaining
Thank you so much for making this! I've always been super confused by biological molecules, but now I get it!! You're a legend!
Normally when watching these videos i take down a note every now and then when you say something important... For this video however i had to put subtitles on and copy out every word because there was almost nothing in this video that isnt important! Good job and these videos have changed a subject that i once dredded to learn about into something im revising on my day off from revision
Oh my goodness... I have Aspergers Autism and I stink at taking notes and reading a textbook and trying to understand this stuff and this has helped me more than ever... Praise God for Crash Course! :-D Thank you so much for making these videos... got any other subjects??? If not, will you make more videos on other subjects???
You're helping me with school so much.
I love these closed captions so freaking much
So amazing, a personal tutor! Will enjoy as many subjects as possible...
Hank, I wish you were my teacher for Biology lol completely kept my attention! Even if I didn't completely understand at times.... :P thank you!
I love your explanations so much! From all others I have seen so far, yours are not only easy to understand, by the most entertaining, not to mention I like the animations as well! :)
Thank you so much for posting these videos. I am trying to learn what we already know of the human body, hoping I can eventually contribute and add greater insight to this knowledge of the body through experiments & research. You are helping me understand the basics of what we currently know. Blowing kisses to you for your time and effort in making these videos to help others xoxoxoxo
Hank Green is like an essential amino acid for me. His teachings consist the base part of it (amino, carboxyl, carbon, H) and R is what I learn in college. Everything essential to pass the class. Perfect