membrane? – semipermeable Which of the following is not a major function of proteins in the cell membrane? - forming the entire glycocalyx What part of a cell membrane is usually in contact with the interstitial fluid? - phosphate heads of phospholipids What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? - In facilitated diffusion‚ molecules only move with the aid of a protein in the membrane. Which of the following is least likely to increase the
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bacterial infections. They work by either killing the bacteria or by stopping them dividing and growing. Some work by interfering with enzymes that are essential in the replication of genetic material (either DNA or RNA) in the bacterial cells or in protein synthesis. Some work just by blocking the sites where enzymes usually join to the substrate‚ so they can’t join on and catalyse the reaction. The parent DNA molecule unravels itself and becomes 2 individual strands that stand on either end. The two
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Introduction A. Consumed for pre-workout‚ during or post workout. B. Where they are found: Different types of animal proteins we consume and different supplements on the market 2. What are BCAAs A. Examples: L-Leucine‚ Citrulline Malate‚ Beta Alanine‚ L-Isoleucine‚ L-Valine‚ and alpha-Hydroxyisocaproic Acid (HCAA) B. They are the building blocks of proteins‚ form coenzymes (coenzymes are essential for enzyme activity; enzymes facilitate biochemical reactions in the body) and
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for creating proteins that are used to group type VII collagen. Collagen is a group of protein that helps to strengthen and support connective tissues i.e. bones‚ tendons‚ ligaments and skin. Exclusively‚ VII collagen plays a fundamental part in strengthening
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transmission decreases at a steady rate‚ until it reaches pH 8 where there is a steep increase from 30% to 39% as the enzyme has reached its optimum pH at 8. During the experiment in the boiling tube this pH had the deepest red colour as the most protein gelatine was broken up. This meant that in the colorimeter when testing to see what the light transmission‚ this pH let the least light through. For this enzyme as the pH increases the percentage of light transmission decreases until it gets to pH
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Fournier‚ M. Leonard‚* I. Le Coq-Leonard‚ and E . Dellacherie L CPM‚ URA C NRS 494‚ ENSIC B.P. 4 51‚ 54001 Nancy‚ France Received March 14‚ 1995. I n Final Form: May 22‚ 1995@ I n order to decrease their hydrophobicity and thus t o reduce the protein adsorption at their surface‚ polystyrene-divinylbenzene (PS-DVB) particles have been coated with dextran. To favor its adsorption‚ the polysaccharide was previously substituted with low concentrations of phenoxy groups. The amount of dextran adsorbed
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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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