Organic Molecules Carbohydrates | Cell Biology | Biochemistry


Segment from the program Biochemistry II: Carbohydrates, Proteins, Lipids, and Nucleic Acids. To purchase this program please visit www.greatpacificmedia.com


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General Biochemistry Review


This course is part of a series taught by Kevin Ahern at Oregon State University on General Biochemistry. For more information about online courses go to ecampus.oregonstate.edu 1. Base excision repair can removed damaged based from DNA. It differs from nucleotide excision repair in removing the damaged base first, followed by removal of a segment where the base was. 2. Disruption of error correction systems can have severe consequences. 3. Error-related systems associated with cancer include HNPCC (colon cancer) and BRC-A (not mentioned in class), which is involved in DNA repair. A critical protein for monitoring DNA for damage prior to division is p53. It can stop the cell cycle if it senses damage and initiate repair. If repair is unable to be performed, p53 can induce cellular suicide - apoptosis. 4. An Ames test uses a selectable marker that can give a readily observable phenotype (such as growth on antibiotic) when mutation happens. By comparing the number of cells with the observable phenotype in a the presence of a test compound to the number of cells in another tube lacking that compound, the mutagenicity of a compound can be determined. 5. Recombination of DNA results in mixing and matching of DNA sequences. The process occurs most often between homologous sequences on different chromosomes. The process can be quite active during meiosis. 6. Recombination proceeds through formation of a Holliday junction. Holliday junctions form as a result of alignment of <b>...</b>


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Biochemistry Proves The Existence of God


This is a short video by Lee Strobel explaining some ways in which biochemistry clearly proves Biblical Creation and the existence of God. Please visit his website at www.leestrobel.com - It is packed with hundreds of great free Christian videos. Todd Tyszka www.toddtyszka.com lee strobel biochemistry biology chemistry science scientific scientifically scientist scientists investigate atheist agnostic skeptic christian christianity bible scripture apologist apologetic apologetics proof prove proves evidence evolution charles darwin evolve evolved evolution intelligent design ID Creator existence of God


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Introduction to Biochemistry


A 4-minute HD video trailer choreographed to dramatic music, designed to be played as a powerful introduction to the Biochemistry of life. I made this for use by teachers of Biology, Biochemistry and the Life Sciences as an introduction to the wonders of life and the amazing chemistry that powers it. As a High School Biology teacher myself, I have found these videos a great way to capture student interest immediately. Please rate this video and feel free to comment. The more folks who can enjoy the drama of life, the better. Subscribe to my channel for other video trailers in Biology. I will be releasing new ones periodically. I wish to thank all of the video and music producers whose postings enabled me to create this video. I can customize this video to add your name or school name at the end credits, for a very modest fee. If interested, email me at "inquiry@gregs-educational.info"


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Ch 2 Water (Biochemistry)


I had a cold, sorry!


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Carbohydrates - Biochemistry


Carbohydrates are exaplined as one of the basic components of medical education. Please see disclaimer on my website. www.academyofprofessionals.com


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Biochemistry- Clemson Graduate School


www.grad.clemson.edu Dr. Harry Kurtz discusses his research in Biochemistry and Molecular Biology at Clemson University.


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Covalent Bonds | Cell Biology | Biochemistry


Segment from the program Biochemistry I: Atoms, Ions, and Molecules. To purchase this program please visit www.greatpacificmedia.com


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Introduction to Biochemistry Lecture 1 of 4


Lecture by Kevin Ahern of Oregon State University introducing students to the subject of biochemistry in BB 350. This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu See the full course at oregonstate.edu Download Metabolic Melodies at www.davincipress.com


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The Work of a Clinical Biochemistry Laboratory (Part 1 of 2)


In this 11 minute presentation, we will show you round a clinical biochemistry laboratory and talk about some of the work that happens there...


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Biochemistry and Biophysics Career Overview


www.citytowninfo.com Interested in becoming a biochemist or biophysicist? Watch this video to see what a career as a biochemist or biophysicist is really like. Provides an overview of the day to day working life of biochemists and biophysicists.


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Atomic Structure Overview | Cell Biology | Biochemistry


Segment from the program Biochemistry I: Atoms, Ions, and Molecules. To purchase this program please visit www.greatpacificmedia.com


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Biochemistry the Movie Part 1


Biochemistry the Movie is a project by Yanis Skerstins and Matthew Baca. The Movie was initially created as an educational video to help A Level Chemistry students at the Thomas Deacon Academy learn the OCR Biochemistry module. As production went on, more and more people got involved and it became what you see here. Starring: Matt Baca, Yanis Skerstins, Laura Walker, Adam Trendall and Jacob Popple. Directed by Luke Moore. Produced by Yanis Skerstins


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Biochemists and Biophysicists - Career Profile


As seen on www.QuietAgent.com , Anonymously evaluating every job, every day for you. Study the chemical composition and physical principles of living cells and organisms, their electrical and mechanical energy, and related phenomena. May conduct research to further understanding of the complex chemical combinations and reactions involved in metabolism, reproduction, growth, and heredity. May determine the effects of foods, drugs, serums, hormones, and other substances on tissues and vital processes of living organisms.


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PHYSIOLOGY AND BIOCHEMISTRY OF ANIMAL FOODS 101 (Cholesterol, Saturated Fat, Etc) #319


(CLICK THE DOWNWARD POINTING ARROW "︾" FOR MORE INFO!) THIS IS WHERE YOU CAN GET GRASS-FED MEAT, PATURE RAISED POULTRY, WILD CAUGHT SEAFOODS AND MORE: tinyurl.com YOU CAN SUPPORT MY WORK BY PURCHASING PRODUCTS THROUGH ANY OF THE LINKS BELOW: tinyurl.com tinyurl.com bit.ly bit.ly bit.ly tinyurl.com YOU CAN MAKE A DONATION ON MY SITE USING THE PAYPAL BUTTON ON THE RIGHT HAND SIDE OF THE PAGE AT THIS LINK: www.secrets-of-longevity-in-humans.com SET UP PHONE OR EMAIL CONSULTATIONS WITH ZAK HERE: www.secrets-of-longevity-in-humans.com ************************************ (1) www.sciencedirect.com (2) www.thelancet.com (3) www.bmj.com (4) www.ncbi.nlm.nih.gov (5) ://www.ncbi.nlm.nih.gov/pubmed/8537587 (6) www.sciencedirect.com (7) www.ncbi.nlm.nih.gov (8) eurheartj.oxfordjournals.org (9) www.ncbi.nlm.nih.gov (10) www.cholesterol-and-health.com (11) www.sciencedirect.com (12) www.ncbi.nlm.nih.gov (13) www.annals.org (14) healthydietsandscience.blogspot.com (15) jn.nutrition.org (16) www.ncbi.nlm.nih.gov (17) www.ajcn.org (18) www.ajcn.org (19) www.cholesterol-and-health.com (20) www.sciencedirect.com (21) www.ncbi.nlm.nih.gov (22) en.wikipedia.org (23) www.liebertonline.com (24) www.ketotic.org (25) www.ncbi.nlm.nih.gov (26) en.wikipedia.org (27) en.wikipedia.org (28) Athleticism: www.ncbi.nlm.nih.gov (29) www.meandmydiabetes.com (30) www.dietdoctor.com (31) 360pt.fr (32) www.youtube.com (33) articles.mercola.com (34) www.ncbi.nlm.nih.gov <b>...</b>


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Bite-Sized Biochemistry #1: Basics


Lecture by Kevin Ahern of Oregon State University discussing Protein Structure II in BB 450. This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu See the full course at oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Highlights Basics 1. Students are responsible for completely reading the syllabus and understanding what is in it. 2. Covalent bonds are VERY strong bonds that hold atoms/molecules together. Covalent bonds are the 'glue' that holds together biomolecules. 3. Hydrogen bonds are much weaker bonds that are also important in biological molecules. Hydrogen bonds arise from uneven sharing of electrons betweeen, for example a nitrogen and a hydrogen or an oxygen and a hydrogen. In each case, the hydrogen ends up with a partial positive charge and the other atom has a partial negative charge. The partial positive charge of the hydrogen may be attracted to a partial negative charge on another oxygen or hydrogen. These bonds are weaker than covalent bonds, but are VERY important in stabilizing protein and DNA structures. 4. Water has its relatively high boiling point due to its numerous hydrogen bonds. The double helix of DNA is held together by hydrogen bonds between the individual bases. 5. Hydrogen bonds are additive, so they provide great stability in numbers (as in across a chromosome <b>...</b>


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#05 Biochemistry Protein Tertiary/Quaternary Structure Lecture for BB 450/550 Fall 2011


A lecture by Kevin Ahern to his BB 450/550 class at Oregon State University. A lecture by Kevin Ahern of Oregon State University to his BB 450/550 class. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Topics covered include protein structure (tertiary and quaternary), prions, protein folding, misfolding, chaperoning, chaperones, RNase, denaturation, stabilizing forces, primary/secondary structure.


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Human Biochemistry - Allosteric Enzymes


I was commisioned by a group of biology students and the Brighton University Amateur Lego Dramatics Society to edit together an informative and fun Lego presentation - I don't understand the science, they did that bit, but here it is!


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Holistic Biochemistry of Cannabinoids by Robert Melamede (part 1 of 5)


At 2004 Cannabis Therapeutics Conference, Dr. Melamede, University of Colorado, explains how the Endocannabinoid System functions as a "Global Homeostatic Regulator", balancing several organ systems. He hypothesises that, "Free Radicals are the Friction of Life. Endocannabinoids are the Oil of Life." Conference hosted by Patients Out of Time. video.google.com www.medicalcannabis.com


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#09 Biochemistry Hemoglobin II/Enzymes I Lecture for BB 450/550 Fall 2011


Alecture by Kevin Ahern of Oregon State University to his BB 450/550 biochemistry class. A lecture by Kevin Ahern of Oregon State University to his BB 450/550 class. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Topics covered include the Bohr effect, sickle cells anemia, carbon dioxide transport, histidine, ionization, enzymes, activation energy catalysis, Kcat, turnover number, Vmax. 1. The Bohr effect describes physiological and molecular responses to changes in pH with respect to oxygen and carbon dioxide in the body. The oxygen effects arise from changes in the teriary structure of hemoglobin arising from binding of protons to histidines in the molecule when under low pH. 2. Rapidly metabolizing tissues (such as muscle) generate low pHs, due to release of carbon dioxide and the conversion of this to carbonic acid by carbonic anhydrase. Carbonic acid readily loses a proton, becoming bicarbonate. 3. Thus, rapidly metabolizing tissues generate protons, which get absorbed by hemoglobin, which releases oxygen to feed the tissues. 4. CO2 can also be taken up by hemoglobin at amine residues, causing protons to be released. Note that CO2 binds hemoglobin at a site other than what oxygen binds. CO, however, can compete <b>...</b>


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#06 Biochemistry Protein Purification Lecture for BB 450/550 Fall 2011


Alecture by Kevin Ahern of Oregon State University to his BB 450/550 General Biochemistry class. A lecture by Kevin Ahern of Oregon State University to his BB 450/550 class. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Topics covered include gel exclusion chromatography, ion (cation/anion) exchange chromatography, affinity chromatography, HPLC, isoelectric focusing, gel electrophoresis, 2D gel electrophoresis, proteins, and separations.


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#07 Biochemistry Protein Characterization Lecture for BB 450/550 Fall 2011


Alecture by Kevin Ahern of Oregon State University to his BB 450/550 General Biochemistry class. A lecture by Kevin Ahern of Oregon State University to his BB 450/550 class. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Topics covered include gel electrophoresis, PAGE, SDS-PAGE, agarose gel electrophoresis, MALDI-TOF, western blotting, antibodies, immune system, detection, purification, monitoring purification, proteases, and cyanogen bromide.


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Bite-Sized Biochemistry #3: Protein Structure I


Lecture by Kevin Ahern of Oregon State University discussing Buffers II and Protein Structure I in BB 450. This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu See the full course at oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Highlights Buffers II 1. Molecules can have more than one buffering region. 2. A buffer system will be at maximum capacity when the concentration of the undissociated acid (HA) equals that of the salt (A-)- (Acid = Salt). The Henderson Hasselbalch equation further reveals that when this is true, pH = pKa. 3. Amine systems (also in amino acids) have two forms: NH3+ and NH2. Note that the NH3+ is the acid and NH2 is the salt in my nomenclature. 4. The Henderson Hasselbalch equation tells us we can predict the ratio of salt to acid as a function of pH if we know the pKa. Consequently, we can predict the charge on amino acids in a protein as the pH changes. Subtle changes in pH in the body can have drastic changes in protein structure and function. 5. It is important for you to be able to use the Henderson-Hasselbalch equation to make predictions relating to pH, pKa, and/or salt/acid. 6. The value of the Henderson Hasselbalch equation is that by knowing the pH and the pKa of a molecule, the approximate charge of it in solution can be determined. For this class, we will <b>...</b>


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Bite-Sized Biochemistry #11: Enzymes II


Lecture by Kevin Ahern of Oregon State University discussing Biochemistry Basics in BB 450. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Highlights of Enzymes III Lecture 1. "Perfect" enzymes are enzymes that have evolved to the point where any additional mutation will reduce their ability to catalyze reactions. They are not common. Perfect enzymes have a very high ratio of Kcat/Km and are such that the only thing that inhibits their ability to function more efficiently is the rate of diffusion of substrate in water. 2. Substrate binding to enzymes is relevant to catalysis that we will consider. The first is the category of Sequential Displacement. It has two subsets. a. Random binding - the order of binding multiple substrates is not rigidly set. b. Ordered binding - Simple ordered binding - one substrate binds first followed by another followed by release of product. 3. Note that the models of substrate binding above are all non-covalent. 4. Allosterism is a phenomenon in which a small molecule interacts with a protein and affects the proteins activity. Such an enzyme is an allosteric enzyme. I pointed out the similarity between the kinetics of allosterically acting enzymes and the coopertivity of binding of <b>...</b>


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Get to Grips with Biochemistry (Glycolysis - Part 1)


get2grips.50webs.com Video based on the ebook Get to Grips with Biochemistry. Some FREE chapters can be downloaded from http 50 short chapters with short questions and answers taking you step by step through important biochemical pathways and chemical structures that you need to know to help you understand biochemistry and pass your exams ! See my other video - Get Better Grades in College: Drawing Graphs bettergrades.50webs.com


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Cytochrome P450: Radicals in a Biochemical Setting


Cytochrome P450 enzymes catalyze the oxidation of organic compounds through radical intermediates. This webcast describes the mechanism of oxidation and how we can use principles of radical stability to correctly predict preferred sites of oxidation.


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Bite-Sized Biochemistry #12: Catalytic Mechanisms


Lecture by Kevin Ahern of Oregon State University discussing Biochemistry Basics in BB 450. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Highlights Enzymes 1.Chemicals, such as DIPF and iodoacetate, covalently (and irreversibly) bind to the side chains of specific amino acids (serine and cysteine, respectively) and if these side chains are essential for the catalytic action of the enzyme, the enzyme will not catalyze reactions after being treated with these chemicals. 2. Penicillin is a substance that resembles the substrate of an enzyme in bacteria that helps make the bacterial cell wall. When it binds to the enzyme, it inactivates the enzyme by covalently bonding to the active site, thus destroying the enzyme (and killing the bacterium containing it). An inhibitor of this type is known as a suicide inhibitor. Highlights Catalytic Mechanisms 1. Proteases catalyze the hydrolysis of peptide bonds in polypeptides. They are usually fairly specific for certain amino acids and cut at or near those amino acids. 2. Chymotrypsin is a protease whose activity has been closely studied. Conveniently, the activity of chymotrypsin can be studied using an artificial substrate which, when cleaved by the enzyme, releases a yellow <b>...</b>


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Bite-Sized Biochemistry #14: Enzyme Mechanism and Regulation


Lecture by Kevin Ahern of Oregon State University discussing Biochemistry Basics in BB 450. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Highlights Catalytic Strategies (continued) 1. Restriction enzymes are paired with a methylase in bacterial cells. The methylase puts a methyl group on the same sequence the restriction enzyme would otherwise cut. When cellular DNA is protected in this way, the restriction enzyme cannot cut the cellular DNA, but it can cut invading viral DNA if it gets to it before the methylase does. 2. Restriction enzymes bind to DNA and "slide" along the double helix. When they reach the sequence they cut at (recognized by hydrogen bonds), the DNA is bent and a magnesium ion is allowed into the complex to facilitate the activation of water to nucleophilically attack the phosphodiester bond, cleaving it. 3. Kinases are enzymes that transfer phosphates onto molecules. They usually use ATP to do this. Nucleoside monophosphate kinases transfer phosphates onto nucleoside monophosphates. Adenylate kinase, for example, catalyzes the reaction ATP + AMP (in equilibrium with) ADP + ADP 4. One problem in the phosphate transfer is getting the phosphate onto the target molecule and not having it either <b>...</b>


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Krebs Cycle Song: Musical Biochemistry!


Each step of the Krebs Cycle, including the enzymes used at each step, set to a catchy tune :-) Great memorization tool!


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Bite-Sized Biochemistry #16: Carbohydrates I (Structure and Function)


Lecture by Kevin Ahern of Oregon State University discussing Biochemistry Basics in BB 450. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Highlights Blood Clotting 1. Prothrombin must bind calcium in to be held near the site of the wound to be activated. Binding of calcium by prothrombin allows it to anchor itself to the phospholipid membranes derived from blood platelets after injury. At this site, prothrombin can be readily converted to thrombin because at the site of the injury are other enzyme that can activate prothrombin to thrombin. To enable prothrombin to strongly bind calcium, glutamate residues in it must be carboxylated (addition of a carboxyl group). This reaction is catalyzed by an enzyme that uses Vitamin K as a cofactor. Compounds like coumarin or warfarin that block vitamin K sites on the enzyme act as "blood thinners", reducing the likelihood of blood clotting. 2. Removal of blood clots involves an enzyme called plasmin, which is synthesized as a zymogen called plasminogen. Plasminogen is converted to plasmin by tissue-type plasminogen activator (t-PA). t-PA can be extremely effective in initiating the cascade to dissolve the unwanted blood clot involved in stroke or heart attack. Highlights of <b>...</b>


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Bite-Sized Biochemistry #19: Cellular Signaling II


Lecture by Kevin Ahern of Oregon State University discussing Biochemistry Basics in BB 450. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Cellular Signaling II Highlights 1. Other receptors involved in signal transduction (signaling) act in different ways. For example, some receptors stimulate the activity of the enzyme Phospholipase C. This enzyme acts on a membranous molecule called phosphatidyl inositol (or PIP2). Cleavage of PIP2 by phospholipase C results in production of TWO second messengers. One of these, diacylglycerol (DAG) remains near or in the lipid bilayer where it stimulates another kinase, Protein Kinase C. Protein Kinase C acts to phosphorylate numerous proteins/enyzmes to activate/inactivate them, depending upon the enzyme. The other second messenger produced by phospholipase C cleavage is inositol 1,4,5 triphosphate (also called IP3). IP3 is soluble in the cytoplasm and it acts there to stimulate the release of calcium from intracellular storage areas holding calcium. 2. Calcium may be thought of as a kind of 'third' messenger in the process of signaling. Cells normally must keep the concentration of the ion low so as to prevent it from binding to proteins and precipitating DNA. Calcium is <b>...</b>


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Bite-Sized Biochemistry #32 - Neurotransmission/Electron Transport


(01/14/11) Lecture by Kevin Ahern of Oregon State University discussing Biochemistry Basics in BB 451. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 450 - oregonstate.edu BB 100 - oregonstate.edu 1. Channels (gates) are made by protein molecules in the membranes of cells. Channels are generally very specific for what they will allow to pass through them. Glucose channels, for example are fairly specific for glucose. Sodium and potassium channels are very specific for each respective ion. 2. Ion specificity is accomplished by two mechanisms. The first is physical. If an ion is too big to fit in a channel, it is excluded. This is the case of the sodium channel, which excludes potassium ions because they are too big. 3. The second mechanism of specificity is energy. An example is the potassium channel, which excludes sodium ions. In this case, the channel allows larger ions (potassium) to pass through, but blocks smaller ions, like sodium ions. 4. The mechanism of exclusion of the potassium channel relates to the energies of solvation of each ion. For potassium ions, the energy of desolvation of the ion as it enters the channel is overcome by the energy of resolvation as it enters the channel. Thus, entry of potassium ions is energetically favored. This is due to <b>...</b>


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Biochemistry: Chemistry of Carbohydrates and Lipids Part 1


www.zaneeducation.com - This K12 curriculum online biology and biochemistry video will help students to study the structure and function of carbohydrates and lipids and in particular one carbohydrate, the sugar glucose. Learn about the biological importance of lipids and carbohydrates and learn about the structure and function of glucose. Examine the structure and function of two carbohydrate sugars, glucose and ribose. Study the function of waxes, fats, sterols, and phospholipids and identify the mechanism that makes molecules water-soluble, and learn why lipids have a low solubility in water. From theZane Education K12 curriculum online video library for schools, teachers, parents, students, tutors and homeschool and subtitled to help improve the reading literacy level of each student.


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Introduction to Biochemistry Lecture 2 of 4


Lecture by Kevin Ahern of Oregon State University introducing students to the subject of biochemistry in BB 350. This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu See the full course at oregonstate.edu Download Metabolic Melodies at www.davincipress.com


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Introduction to Biochemistry Lecture 3 of 4


Lecture by Kevin Ahern of Oregon State University introducing students to the subject of biochemistry in BB 350. This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu See the full course at oregonstate.edu Download Metabolic Melodies at www.davincipress.com


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Bite-Sized Biochemistry #39 - Nucleotide Metabolism I


Lecture by Kevin Ahern of Oregon State University discussing Biochemistry Basics in BB 451. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 450 - oregonstate.edu BB 100 - oregonstate.edu Nucleotide Metabolism 1. Nucleotides consist of a) sugar, b) nitrogenous base, and c) phosphate 2. Nucleosides consist of aa) sugar and b) nitrogenous base 3. The sugars of nucleosides and nucleotides are either ribose (found in ribonucleotides of RNA) or deoxyribose (found in deoxyribonucleotides of DNA). 4. The nitrogenous bases found in nucleotides include adenine (purine), guanine (purine), thymine (pyrimidine), cytosine (pyrimidine), and uracil (pyrimidine). 5. The bases adenine, guanine, and cytosine are found in both ribonucleotides and deoxyribonucleotides. Thymine is almost always found in deoxyribonucleotides. Uracil is found primarily in ribonucleotides and rarely in DNA, but does appear as a deoxyribonucleotide intermediate in thymidine metabolism. 6. Ribonucleotides are the building blocks of RNA and deoxyribonucleotides are the building blocks of DNA. 7. Nucleotides and nucleosides are made in cells by two general mechanisms - salvage pathways (use breakdown products of other nucleotides/nucleosides) or de novo pathways (synthesize nucleotides/nucleosides from scratch <b>...</b>


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Ch 21a Cholesterol Synthesis part 1 (Biochemistry)


Slides come from the Lehninger's Principles of Biochemistry 5th edition. Buy the book, it is great!


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#08 Biochemistry Hemoglobin Lecture for BB 450/550 Fall 2011


Alecture by Kevin Ahern of Oregon State University to his BB 450/550 biochemistry class. A lecture by Kevin Ahern of Oregon State University to his BB 450/550 class. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Topics covered include x-ray crystallography, NMR, myoglobin, hemoglobin, oxygen storage, oxygen delivery/transport, R-state, T-state, cooperatively, heme, porphyrin ring, protoporphyrin IX, iron, structure/function, histidine, 2,3-BPG, BPG, fetal hemoglobin "Introduction to Biochemistry" "Introductory Biochemistry" "Biochemistry Review" online class "Metabolic Melodies" metabolism


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#01 Biochemistry Introductory Lecture for BB 450/550 Fall 2011


A lecture by Kevin Ahern introducing the topic of biochemistry to BB 450/550. A lecture by Kevin Ahern of Oregon State University to his BB 450/550 class. See the full course at oregonstate.edu This course can be taken for credit (wherever you live) via OSU's ecampus. For details, see ecampus.oregonstate.edu Download Metabolic Melodies at www.davincipress.com Related courses include BB 350 - oregonstate.edu BB 451 - oregonstate.edu BB 100 - oregonstate.edu Topics include structure/function, hydrogen bonds, covalent bonds, DNA, RNA, proteins, cells, the molecular basis of life, molecules, and the biological revolution. 1. Covalent bonds are VERY strong bonds that hold atoms/molecules together. Covalent bonds are the 'glue' that holds together biomolecules. 2. Hydrogen bonds are much weaker bonds that are also important in biological molecules. Hydrogen bonds arise from uneven sharing of electrons betweeen, for example a nitrogen and a hydrogen or an oxygen and a hydrogen. In each case, the hydrogen ends up with a partial positive charge and the other atom has a partial negative charge. The partial positive charge of the hydrogen may be attracted to a partial negative charge on another oxygen or hydrogen. These bonds are weaker than covalent bonds, but are VERY important in stabilizing protein and DNA structures. 3. Water has its relatively high boiling point due to its numerous hydrogen bonds. The double helix of DNA is held together by hydrogen bonds between the <b>...</b>


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Biochemistry the Movie Part 2


Biochemistry the Movie is a project by Yanis Skerstins and Matthew Baca. The Movie was initially created as an educational video to help A Level Chemistry students at the Thomas Deacon Academy learn the OCR Biochemistry module. As production went on, more and more people got involved and it became what you see here. Starring: Matt Baca, Yanis Skerstins, Laura Walker, Adam Trendall and Jacob Popple. Directed by Luke Moore. Produced by Yanis Skerstins


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