Chemical Bonding and Molecular Interactions; Lipids and Membranes 1. Introduction ~ 0:01 2. The elements involved with life ~ 9:00 3. Functional Groups ~ 17:40 4. Non-Covalent Bonding ~ 26:44 1. Ionic Bond ~ 29:21 2. Hydrogen Bond ~ 31:09 3. Hydrophobic Interactions and Van der Waals forces ~ 35:32 5. Line-Angle Drawings ~ 37:53 6. Lipids ~ 38:53 1. Fatty acids ~ 41:44 2. Esters and Phosphoesters ~ 45:56
These teachers are chalk wizards! Thankfully this teacher doesn't teach like she's asleep like so many others. She has energy and that helps with learning
She is very good at making this subject something that is interesting and enjoyable to learn. It's fascinating how well information is retained when it is fun to understand.
The way in which Dr. Imperiali explains things is amazing, her enthusiasm and knowledge is inspiring, makes the learning process so interesting and easy. Everything is so well explained. Great energy literally :) Thank MIT for sharing this!
with the proper background knowledge, I found myself having all the preliminaries to go forward with the chemical nature of life. I am incredibly grateful
MIT has some great courses. If you are interested in mathematics, Gilbert Strang is a brilliant teacher. He was taught a course on Linear Algebra and a student ran through the lecture hall in an ape suit (must have been around the time of Halloween). He was took it all in stride.. made a pithy comment and continued with the lecture!
Dear Professor Imperial: I like personal thank for this. In 1986, I take general biology . I.make a F because I get the reasonable accommodations. Now, in fall of 2024., I reviewing, your lectures are clear , easy to understand l. I will be taking introduction Biology for second times in Spring 2025. I'm 61. I do have college degrees .
Wow nothing less. This lecture really made the molecules of organic organisms come to life. It was down to earth and a really beautiful explanation about molecules in organisms. THANK YOU !
Thank you so much, its very impressive, the drive the interest an the dedication of the Instructor: Barbara Imperiali. I am listening to the lectures from Moscow Russia and its very engaging and educational as if you are present at MIT lecture. I am a HirudoTherapy practitioner and i love educating myself nowadays wherever whenever.
This is what I love about RU-vid and other platforms. I can learn literally whatever I need whenever I need. I am only in high school but I feel that I can learn whatever I need or want with just a RU-vid search
Here's something I've been experimenting with. The tongue and the nose bouth analyze taste. As far as I know at least, I am not an expert in the field. But they have different activation thresholds. So, if let's say I taste a very small amount of a substance, let's say a lemon, it is possible for one to get activated and the other not to get activated. If this happens, the brain recieves two different responses for the same stimulus. And in my personal experience, this acts like a drug. The brain gets confused and I get dizzy, cheerful, it depend on the substances. But all the substances I am talking about are food, not drugs. For example I squeez maybe 0.1 grams of lemon in a lidzen tea and when I drink it I feel like I am drunk. Something like that. In order to prepare the drink, I simply add very little lemon to the tea and smell it. I feel some sort of a sting in my nose and I imediatly start feeling the effects. I don't really know how this works exactly from a neuroligical perspective. I think of it like I said, two different inputs for the same stimuls and the brain gets in overdrive. I am curious if anyone tried experimenting with something like this. It's 100% legal, since it's about food, not drugs.
How come this have so few likes? This is brilliant and explained very well. I wondered, how those lipid bilayers would form in nature, to get the "cell life" started. Then I got the answer that they self -assemble (when the necessary conditions are met, I assume). I consider the primordial soup a pretty interesting place. Especially the early days :-D
Perhaps that’s unfair to other colleges and universities? Professor Imperiali seems like one in a billion. You either get her, like MIT did, or you get some who’s just not for a world class superstar professor like she is.
I don’t, in an overwhelmingly detailed level, know by heart how exactly(?) we get from a fistful of kinds of perfectly identical atoms to the level of complexity that is capable to talk about all this we talk about - I do, however, find every single level of complexity we know of to be perfectly magnificent and spotless in their deeply uniform, common core logic that I, coincidentally, would like to identify for 56 years:) I’m becoming more and more convinced that a fitness-based survival chain of natural selection, determined by the applicable surroundings (a size-specific implementation of “evolution” or, rather, self-assembly) is ultimately responsible for this comment. Not me, right? Ergo, if you like this comment then you like nature. Who likes nature, people?
(A) Sulphur involved in hydrogen bone participant : that seems rare please give some examples. (B) wouldn't it be better to see Hydrogen bond as the biggest and the most important sub set of A-M+-B type of bond.
At 22:51, defining the reaction that forms amide, I think she forgets to add in the C (carbon) on the right hand side. The reaction is not balanced without it, even when assuming H2O as a by-product. Compare it with the slide she shows a few minutes later, there the C is indeed included. Can someone confirm?
Is there an online resource/textbook that I can go through to understand these molecules and their interactions in a bit more detail? My chemistry is weak and I felt a bit lost. Any help would be greatly appreciated!
The required textbook for this course was: Sadava, D. E., D. M. Hillis, et al. Life: The Science of Biology. 11th ed. W. H. Freeman, 2016. ISBN: 9781319145446. For more info, visit the course on MIT OpenCourseWare at: ocw.mit.edu/7-016F18. Best wishes on your studies!
The required textbook is: Sadava, D. E., D. M. Hillis, et al. Life: The Science of Biology. 11th ed. W. H. Freeman, 2016. ISBN: 9781319145446. See the course for more information at: ocw.mit.edu/7-016F18. Best wishes on your studies!
Hi there , In my understanding point when we have a solution that contains water as its solvent and we also have Hydrophobics molecule ( for example inside cell we have protein and water ) , Hydrophobics substances ( some proteins) tend to combine with each other as they do they release water molecule ( due to Hydrophobic effect ) , and if we trying to fold protein to the shape which matches with its function our solvent is water so there will be certain too much (Ionic & Hydrogen)bonds which is unnecessary , so due to Hydroponic interaction we are trying to get ride of those unnecessariness ( and as a result we release water ) . Hope u get it
Covalent bonds are much stronger than Ionic bond. They are formed by equal contribution and sharing of electron in the outer energy level while Ionic bonds are formed by positive and negative charges btw anions and cations
@@beingnurdin yea but ionic bonds physically take each others electrons and covalent bonds just share them.. are covalent bonds always stronger than ionic bonds or just sometimes?
I believe non covalent bonds involved more than just ionic bonds. "A non-covalent interaction differs from a covalent bond in that it does not involve the sharing of electrons, but rather involves more dispersed variations of electromagnetic interactions between molecules or within a molecule. "- Wiki
The required textbook is: Sadava, D. E., D. M. Hillis, et al. Life: The Science of Biology. 11th ed. W. H. Freeman, 2016. ISBN: 9781319145446. See the course on MIT OpenCourseWare for more info and materials at: ocw.mit.edu/7-016F18. Best wishes on your studies!
The required textbook is: Sadava, D. E., D. M. Hillis, et al. Life: The Science of Biology. 11th ed. W. H. Freeman, 2016. ISBN: 9781319145446. See the course on MIT OpenCourseWare for more info and materials at: ocw.mit.edu/7-016F18. Best wishes on your studies!
@@dohnjoe5401 I understand your point. I wish teachers didn’t do this. It is much harder for students to unlearn this wrong information than to spend a little time learning it right. Teachers underestimate students abilities to learn.
See the course on MIT OpenCourseWare for more info: ocw.mit.edu/courses/biology/7-016-introductory-biology-fall-2018/readings/. Best wishes on your studies!
You can purchase the 10th edition for a few dollars. The eleventh edition will soon go down in price since 12th edition coming out soon. BTW, text is 1200 pages, so don’t buy 1 volume or you won’t be able to refer to material that appears later in the text. I found this out looking up an abbreviation in lecture 31;{
Hi Barbara imperiali - concerning your slide about LDL - please your comment about Dr Semantha Seneff a member of MIT who says that there is no real understanding of LDL. And actually it has a positive contribution.
@@burakguney2193 That lady is an MIT researcher who is model simulating of compuerized biology and she says that all pro in this field are missing crucial knowledge. For instance she says that small amount of LDL is colloging the systems and makes a little heart attack intended to clean the and prevent a heart stroke.
Physically writing out notes on the board is a method of getting information to stick better. Juxtaposed to a lecture where a professor just flips through ppt slides, it’s more interactive.
I am an Engineer in IT and AI. AI caused be to learn nueroscience and then in turn biology. I think you will find it amazing that a person who found it pride to NOT to learn biology is doing this course.