Methyl Group

AP Biology Functional Groups - Methyl group

Order: Reorder
Duration: 1:49
Updated: 12 Jun 2012

Get the App! Go to bit.ly CLEP Biology Functional Groups - Methyl group.mp4

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Assigning Configuration of Chiral Methyl Groups

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Duration: 2:09
Updated: 21 Oct 2012

A short lecture from a Chemistry Professor

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Methyl group drip, STAT!

Order: Reorder
Duration: 0:22
Updated: 24 Aug 2010

pseudoscience, or bastardized real science, someone, not sure it is Inmendham, is fucking confused! Lets trip a few reality genes: We can identify, with the use of dye, the "turned off" genes. We can turn off a gene, in fact, simply by the addition of methyl groups to the DNA, at CpG sites (CpG sites are regions of DNA where a cytosine nucleotide occurs next to a guanine nucleotide in the linear sequence of bases along its length.), to convert cytosine to 5-methylcytosine. In the example on the video, coat color is a tag. The same process with an additional obesity tag has been produced in mice using environmental toxins: Interestingly BPA, the toxin recently reported in certain plastic baby and water bottles. The results were a lot scary! The change was passed on to the off spring. Normally brown mice born to a cloned mother with the obesity gene turned on and a yellow coat tag, were born with the yellow tag and obesity gene turned on. Pregnant and drinking bottled water? Your off spring may well have a stake in what is in that plastic. Once turned on, you can pass the awakened gene along. DNA and genes are NOT changed. I don't think it is evolution. We are talking about on off switches within the same unchanged DNA and genes. Will you have a tail and no limbs, or brown eyes and ten fingers as a human? The truth is you probably have the genes for either, it is more determined by the proper genes turned on telling your body you are supposed to be a human, not a bacteria ...

http://wn.com/Methyl_group_drip,_STAT!

2013.1.14 Methyl Group [De.Bio.1.2013].mp4

Order: Reorder
Duration: 5:00
Updated: 16 Jan 2013

3D look at the methyl group and its properties.

http://wn.com/2013114_Methyl_Group_DeBio12013_mp4

AP Bio Ch 4- Methyl Group - Acetone example.mp4

Order: Reorder
Duration: 1:49
Updated: 16 Jan 2012

AP Bio Ch 4- Methyl Group - Acetone example.mp4

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Polypropylene

Order: Reorder
Duration: 2:57
Updated: 29 Nov 2012

Polypropylene Polypropylene enjoys wide application in technology engineering. This is a synthetic thermoplastic non-polar polymer classified as polyolefin. It is the product of propylene polymerization. Polypropylene is a solid white material with the chemical formula of C3H6. Propylene polymerization results in polypropylene linear molecule whose building blocks include -CH2-CH- bond with CH3 methyl side group. According to the methyl group position in the polymer chain, polypropylenes fall under: atactic polypropylenes whose methyl groups are located randomly at both sides of the polymer chain; syndiotactic polypropylenes whose groups have alternate positions along the chain; and isotactic polypropylenes whose all methyl groups are located on the same side of the polymer chain. Such polypropylenes are 50% more rigid and 25% harder than atactic polypropylenes. Polypropylene's physical, chemical, mechanical and electric properties greatly depend on the macromolecular structure. Polypropylene is marked as double-P both in Cyrillic and Latin alphabet. Polypropylene is a plastic material demonstrating high impact and cross-breaking strength. It is wear-resistant and has good electric insulation properties within wide temperature ranges. It is also chemically stable and water-resistant. Polypropylene products are manufactured based on all thermoplastic material processing technologies. Polypropylene finds wide application in the industry. It is used to produce packaging and ...

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Salbutamol and Asthma - Periodic Table of Videos

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Duration: 4:26
Updated: 24 Feb 2013

A molecule which has saved many lives by battling the effects of asthma... Salbutamol. NOTE FROM DR STOCKMAN: "noradrenaline has no methyl group... adrenaline has the methyl group... sorry for the mix-up" More chemistry at www.periodicvideos.com Follow us on Facebook at www.facebook.com And on Twitter at twitter.com

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Angelman Rap

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Duration: 3:12
Updated: 13 Sep 2012

Mike Willy Holder's Rap about Angelman Syndrome Thanks to: Jay, Silvia and Abdi for being in it Irish Dave for filming most of it Lucia for letting us borrow her house, her robe, her towel and her beans Mark for usage of his recording studio Tim for the original idea Lyrics: Open your ears and open your eyes Youve seen the presentation so Ill summarise Ive got a few pointers that I think you ought to know And you better listen fast because I dont rhyme slow Ive gotta tell you all about genomic imprinting You need to switch on, you need to be thinking This topic it gets quite serious But remember that it happens in all of us You see your mum loves your dad and your dad loves her back, They go and make a baby in their little love shack The sperm hits the egg and the genes collide But the ones which get chosen is a matter of pride It all happens cuz of something called methylation Which I think, needs a little explanation Methyl groups block transcriptase activity A cytosine gets one, and it stops its expressivity If a methyl group jumps on your Dads ICR His H19 bit stops and listens to your ma But the IGF2 bit is from your Papa So your mother stops enhancing hers, cuz shes a star Instead of methyl groups she uses some proteins Called CTCF, theyre cool beans They help the human race live on with their tricks They even helped me put some bongos in the mix So how did it start? Ive got 3 theories to get to the heart Of this matter, when you hear the pitter patter Of your babys ...

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A.1.6 Outline the variation in the molecular structure of fatty acids

Order: Reorder
Duration: 2:29
Updated: 20 Feb 2013

Fatty acids have 3 parts to their structure: '-COOH' carboxyl group, '-CH3' methyl group (or omega group) and the hydrocarbon chain in the middle. Saturated Vs Unsaturated: A saturated fatty acid means that every carbon in the hydrocarbon chain is attached to as many hydrogens as possible whereas in contrast in an unsaturated fatty acid there is one or more double bonds in the hydrocarbon chain because some carbons are not attached to the maximum number of hydrogens possible. Monounsaturated Vs Polyunsaturated: A monounsaturated fatty acid is one which contains only one double bond, whereas a polyunsaturated fatty acid contains two or more double bonds Cis Vs Trans unsaturated: In a Cis unsaturated fatty acid the hydrogens (attached to the carbons either side of the double bond) are on the 'same side' so far as the diagram goes. In a Trans unsaturated fatty acid the hydrogens (attached to the carbons either side of the double bond) are on 'opposite sides' so far as the diagram goes. An Omega-3 fatty acid is an example of a Cis-polyunsaturated fatty acid that the IB wants you to be familiar with. It is named as such because the first double bond is on the third carbon if you count from the omega group (methyl group)

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EAS: trifluoromethyl group.mp4

Order: Reorder
Duration: 2:15
Updated: 05 Apr 2012

All methyl groups are not equal. Trifluoromethyl (CF3) group is a strong deactivator.

http://wn.com/EAS_trifluoromethyl_groupmp4

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Role of DNA methylation during replication

Order: Reorder
Duration: 4:22
Updated: 03 Feb 2013

For more information, log on to- shomusbiology.weebly.com Download the study materials here- shomusbiology.weebly.com DNA methylation is a biochemical process that is important for normal development in living organisms. It involves the addition of a methyl group to the 5 position of the cytosine pyrimidine ring or the number 6 nitrogen of the adenine purine ring (cytosine and adenine are two of the four bases of DNA). This modification can be inherited through cell division. DNA methylation is a crucial part of normal organismal development and cellular differentiation in multicellular organisms. DNA methylation stably alters the gene expression pattern in cells such that cells can "remember where they have been" or decrease gene expression; for example, cells programmed to be pancreatic islets during embryonic development remain pancreatic islets throughout the life of the organism without continuing signals telling them that they need to remain islets. DNA methylation is typically removed during zygote formation and re-established through successive cell divisions during development. However, the latest research shows that hydroxylation of methyl groups occurs rather than complete removal of methyl groups in zygote.[1][2] Some methylation modifications that regulate gene expression are inheritable and cause genomic imprinting. In addition, DNA methylation suppresses the expression of viral genes and other deleterious elements that have been incorporated into the genome ...

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Preparation and purification of methyl-3-nitobenzoate.

Order: Reorder
Duration: 14:21
Updated: 04 Feb 2013

All of the important steps in the preparation and purification of methyl-3-nitobenzoate are considered here. Apologies for the loss of picture between 6:41 and 7:54, but the audio should suffice during this interval.

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Make acetaldehyde, then formic acid using the haloform reaction

Order: Reorder
Duration: 2:40
Updated: 17 Feb 2013

I'm back to uploading videos! I could not upload for a month or so because I need to fix up my phone (the camera stopped working) and other complications. This video is my first uploaded organic chemistry video. Not too difficult organic chemistry though. Formic acid is produced by the haloform reaction with acetaldehyde. Acetaldehyde is the only aldehyde that can participate in the haloform reaction. This is because a methyl group is beside the C=O carbonyl. Any substances that has a methyl group beside a carbonyl can participate in this reaction, ultimately forming a carboxylate and chloroform. So this reaction is quite useful if you want to produce an inaccessable carboxylate salt. Warning: Acetaldehyde is carcinogenic. Try not to work with it too much. As usual, use proper safety equipment and be careful. The chloroform in this reaction is not isolatable, because of the amount of insolubles mucking up the solution, so it is boiled off with the water. If a clean source of hypochlorites are used, the chloroform can potentially be isolated. The reason why the part of me leading the acetaldehyde into the water is because that resulted in a runaway that almost popped the cork I used from the reaction out. You can react the hypochlorite in a chilled vessel, which won't result in a runaway, but is a lot slower and you need to constantly watch the reaction, or a suckback could occur.

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O-689

Order: Reorder
Duration: 2:01
Updated: 28 Jul 2012

www.buzz-wholesale.com (±)-2-Methyl arachidonoyl-2'-fluoroethylamide (2-Methyl-2'-fluoro AEA) is definitely an analog of anandamide (AEA) where the alcohol from the ethanolamide group continues to be removed and changed having a fluorine atom. This substitution confers substantially elevated binding affinity for that CB1 receptor. Additionally, it confers additional selectivity, for the reason that binding to CB2 is decreased in accordance with AEA. However, the in vivo activity of two-fluoro AEA is enhanced a smaller amount compared to binding affinity, since the analog remains a great substrate for FAAH and it is quickly hydrolyzed with this enzyme. 2-Methyl-2'-fluoro AEA is further modified by adding an ?-methyl group in the C-2 position of arachidonic acidity. This substitution confers enhanced metabolic stability. 2-Methyl- 2'-fluoro AEA can fully replacement for ?9-THC in animal self-administration tests, whereas AEA and a pair of-fluoro AEA cannot.

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5-Methyl-7 Nutritional Supplement

Order: Reorder
Duration: 1:28
Updated: 23 Jan 2013

Learn all about 5-Methyl-7 (5-Methyl-7-Methoxy Isoflavone) in this video by PureBulk.com.

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Systematic Studies of the Histone Methyl 'ome' by Bradley Bernstein, MD, PhD

Order: Reorder
Duration: 40:11
Updated: 15 Jun 2012

Dr. Bernstein describes the key roles of chromatin structure in regulating genome function and its potential for therapeutic intervention at the 2011 Chabner Colloquium.

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Talking about epigenetics with Dr. Mark Clanton

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Duration: 1:57
Updated: 02 Jan 2013

How can our environment change our DNA? Dr. Mark Clanton talks about epigenetics and how scientists are trying to understand how our genes can change or be damaged based on the exposures that we have during life, such as what we eat, radiation, smoking, etc. Dr. Clanton also talks about CH3 methyl groups that you can pick up when eating certain types of food and their affect on DNA methylation and our epigenome. Dr. Clanton is the chief medical officer of the High Plains Division of the American Cancer Society and was the deputy director of the United States National Cancer Institute at the National Institutes of Health. His talk, "The War on Cancer: 41 Years after Nixon's Declaration", is part of the awesome Hot Science - Cool Talks series, presented by the UT Austin Environmental Science Institute. This is part three of my interview series with Dr. Clanton. Learn more about science and dyslexia and join the fight against invasive species at commanderben.com

http://wn.com/Talking_about_epigenetics_with_Dr_Mark_Clanton

Methyl nitrite

Order: Reorder
Duration: 0:23
Updated: 24 Nov 2012

a few mLs of dilute hydrochloric acid are added to 1mL of methanol. To this a spatual of sodium nitrite is added, and the colorless gas methyl nitrite is formed. This is flammable as showed in the video.

http://wn.com/Methyl_nitrite

Tri Methyl X

Order: Reorder
Duration: 0:25
Updated: 29 Sep 2012

Overview of Tri-Methyl X prohormone. Find it at suppz.com

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Amino Acids Found In Space

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Duration: 1:22
Updated: 02 Feb 2013

Science & Reason on Facebook: tinyurl.com Does life exist elsewhere in the Universe? Perhaps. In August 2009, scientists announced the discovery of the amino acid, glycine, on the comet Wild 2. Amino acids provide key components for life here on Earth, but this is the first time we have definitive evidence of these molecules occurring in space. --- Please subscribe to Science & Reason: • www.youtube.com • www.youtube.com • www.youtube.com • www.youtube.com --- Amino acids are molecules containing an amine group, a carboxylic acid group and a side chain that varies between different amino acids. These molecules are particularly important in biochemistry, where this term refers to alpha-amino acids with the general formula H2NCHRCOOH, where R is an organic substituent. In the alpha amino acids, the amino and carboxylate groups are attached to the same carbon atom, which is called the αcarbon. The various alpha amino acids differ in which side chain (R group) is attached to their alpha carbon. These side chains can vary in size from just a hydrogen atom in glycine, to a methyl group in alanine, through to a large heterocyclic group in tryptophan. Amino acids are critical to life, and their most important function is their variety of roles in metabolism. One particularly important function is as the building blocks of proteins, which are linear chains of amino acids. Every protein is chemically defined by this primary structure, its unique sequence of amino acid residues ...

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Synthesis of methyl iodide

Order: Reorder
Duration: 1:14
Updated: 15 Feb 2013

This is very simple synthesis of very useful reagent methyl iodide. Methyl iodide is carcinogenic and highly volatile so be extremely careful! This procedure is based on Arrhenius's procedure posted on sciencemadness. www.sciencemadness.org Works great.

http://wn.com/Synthesis_of_methyl_iodide

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Alcohol and the Human Body 1949 Encylopedia Britannica EB Films

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Duration: 12:53
Updated: 08 Feb 2013

more at scitech.quickfound.net "Traces the course of alcohol through the body; shows the effects of alcohol on the brain; dramatizes the case of a problem drinker, including treatment." Public domain film from the Library of Congress Prelinger Archive, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and equalization. en.wikipedia.org Ethanol, also called ethyl alcohol, pure alcohol, grain alcohol, or drinking alcohol, is a volatile, flammable, colorless liquid. It is a psychoactive drug and one of the oldest recreational drugs. Best known as the type of alcohol found in alcoholic beverages, it is also used in thermometers, as a solvent, and as a fuel. In common usage, it is often referred to simply as alcohol or spirits. Ethanol is a straight-chain alcohol, and its molecular formula is C2H5OH. Its empirical formula is C2H6O. An alternative notation is CH3--CH2--OH, which indicates that the carbon of a methyl group (CH3--) is attached to the carbon of a methylene group (--CH2--), which is attached to the oxygen of a hydroxyl group (--OH). It is a constitutional isomer of dimethyl ether. Ethanol is often abbreviated as EtOH, using the common organic chemistry notation of representing the ethyl group (C2H5) with Et. The fermentation of sugar into ethanol is one of the earliest organic reactions employed by ...

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