atrium and then the left ventricle pumps it to the rest of the body. Blood travels round the body faster‚ delivering nutrients faster‚ so the animals have a higher metabolic rate. 1.1.2 Arteries and veins contain collagen: a tough‚ fibrous protein to make them tough and durable. The artery wall stretches as blood is pumped in and then recoils as the heart relaxes. Blood flow is continual and there is a pulse. Contracting muscles and low pressure in the chest when breathing in assist
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the following questions: What is the difference between Resolution and Magnification? What is the difference between Amplitude contrast and Phase contrast? A student in a cellular biology laboratory is faced with the task of detecting protein X in muscle cells taken from a rat. The tissue is required to be live while under analysis. Which type of microscopy should be employed? a) Phase contrast light microscopy b) Transmission electron microscopy c) Scanning electron microscopy d) Fluorescence
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References: *1 =http://www.courses.psu.edu/fd_sc/fd_sc400_jnc3/proteins/enzymes.htm *2 =http://userpages.wittenberg.edu/s04.bdoane *3 =http://www.lsbu.ac.uk/biology/enztech/inhibition.html *4 = http://www-saps.plantsci.cam.ac.uk/records/rec259.htm *5 =http://www.coursework.info/i/19208.html *6 =http://www.accessexcellence
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are present in a protein‚ in this case gluten. Introduction: Proteins are large biological molecules that are made up of amino acids. They serve as building blocks that form organic structures such as tendons‚ muscle‚ and cartilage. Enzymes - biological catalysts that allow important chemical reactions to occur in our body - are also made up of proteins. Thus‚ proteins play a fundamental role in the processes of life. [1] Protein purification is basically isolating a protein from complex mixtures
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understanding of prion disease. The background knowledge of proteins and their characteristics help me to analyze the spread of the disease better. Engineering the prion protein using chemical synthesis and biological characteristics will provide a full analysis. The author concludes with his own story‚ about a mysterious neuromuscular disease that is gradually robbing him of his mobility. Like the prion diseases‚ his is a disorder of misfolded proteins. However he realizes that his condition is not as fatal
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Biology Exam Review Unit One – Biochemistry What is an isotope? Isotope - An isotope is all atoms of the same element that have the same number of protons‚ but they may have different numbers of neutrons in the nucleus. - This means that all atoms with the same atomic number can have different atomic masses. - Because they have the same number of protons and electrons‚ they behave exactly the same in chemical reactions. Radioisotope - The nuclei of some isotopes of an element are unstable
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2010 Maple Syrup Urine Disease I. General Information -Maple Syrup Urine disease is an inherited disorder in which the body does not and is unable to process certain protein building block called amino acids leucine‚ isoleucine‚ and valine. -To treat this disease the infected would have to have a protein-free diet. Fluids‚ sugars and possibly fats are given through a vein (IV). II. Nature of this Mutation -Symptoms of this mutation include avoiding food‚ coma‚ feeding
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Ni-NTA agarose beads - reuse of Ni-NTA agarose beads for His protein (Jan/12/2005 ) Can someone guide me on how to get rid of imidazole adsorbed to Ni-NTA agarose beads so they might be reused. Thanks in advance. -mdsr- You will find lots of informations about NiNTA purification system. And a protocol for Ni-NTA regeneration... You can wash your resin with 0.5N NaOH 30min for rapid regeneration. And use the same resin for the same protein purification... For information : Handling : Ni-NTA
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secondary structure of a protein form when amino acids repeat within a certain range of polypeptides. If there is a mess up with the order of amino acids‚ there will be a mess up of the interactions between the backbones (secondary structure). If this is messed up‚ then the tertiary structure‚ which is the interactions of the side chains‚ will also be messed up. Ultimately‚ the quaternary structure‚ which is the overall shape of the protein‚ will also be messed up. If a protein loses its shape‚ it will
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Introduction Milk is one of the resources in United States that is most common. Thus‚ casein has been long studied because of its obtainability. Many has did research on its properties to maximize its potential usage. Casein is the main protein present in milk and cheese. It will precipitate when it reached pH 4.9 at 20C. The percentage of casein in nitrogen can be vary depend on species. For example‚ casein represent up to 40% in human milk while 80% in bovine. Casein contains phosphorus
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