Biology coursework The aim of this experiment is to investigate the affect of pH on the enzyme amylase. The amylase is used to break down the polysaccharide starch. Amylase is a digestive enzyme classified as a saccharidase (an enzyme that cleaves polysaccharides). It is mainly a constituent of pancreatic juice and saliva‚ needed for the breakdown of long-chain carbohydrates (such as starch) into smaller units. Amylase is also synthesized in the fruit of many plants during ripening‚ causing them
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change – negative test 12. Nitrate Reduction Enzyme – nitrate redactase Positive control- E.coli Pink color- positive No pink – negative 13. Starch hydrolysis (iodine)‚ test for enzyme laminase Positive control- B. subtillus Zone of clearing- positive test No zone of clearing – negative test 14. Fat hydrolysis‚ test for enzyme lipase Positive control – S.aureus Dark blue – positive test No dark blue- negative test 15. Casein Hydrolysis‚ enzyme caseinase Positive control – B. subtilus Positive-
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humans‚ is enzyme that catalyzes the hydrolysis of starch into simpler compounds. Its enzymatic activity is affected by several factors‚ such as temperature and pH. The rates of enzymatic activity of salivary amylase in different temperatures and pH were measured and resulted to be very near 50 C and 7 respectively. However‚ due to some errors that were committed‚ the expected optimum temperature was not achieved. Introduction Of all biomolecules found in the cells and organisms‚ the enzymes‚ because
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Short answer questions – generally complex by their nature and require knowledge and integration of several different concepts 1. Explain what are the end goals of reproductive cloning and therapeutic cloning. Outline the steps both procedures share and the step(s) specific for each procedure. • Reproductive Cloning- Reproductive cloning is a type of cloning which is performed for the purpose of creating a duplicate copy of another organism. It is accomplished using a process called somatic cell
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ABSTRACT Enzymes are highly specific and can distinguish isomers of the same molecule. The enzyme invertase specifically catalyzes the reaction of the conversion of sucrose to its individual carbohydrates glucose and fructose. It does not catalyse the reaction of maltose to 2 glucose or lactose to galactose. In this experiment‚ titrimetric and spectrophotometric methods were used to determine the specificity of invertase by determining the amount of glucose converted from the given disaccharides
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4 Enzymes and metabolism 4.1 Metabolism (Book 1A‚ p. 4-3) Metabolism (新陳代謝) refers to the (1) _______________ of the chemical reactions that take place in an organism to keep it alive. Catabolism (分解代謝) Anabolism (合成代謝) All the (2) _______________ reactions within an organism (3) _______________ energy All the (4) _______________ reactions within an organism (5) _______________ energy 4.2 Properties and actions of enzymes (Book 1A‚ p. 4-4) A What is the role of enzymes in metabolism?
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9.2 Maintaining A Balance 1. Most organisms are active in a limited temperature range. | | * Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on subrates. | * Role of enzymes in the metabolism:Biological catalysts that control all chemical reactions within the body. They are specific to one action. | | * Chemical composition:Catalysts produced by cells made up of proteins (linked amino acids)
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temperature conditions. Introduction Before doing research on amylases‚ an explanation of enzymes is needed to fully understand each part of the experiment. An enzyme is a protein that helps speed up a chemical reaction (Raven‚ 2011). An enzyme is a catalyst‚ which is made by living cells; usually enzymes assist in developing the metabolic process of cells (Underkofler et al‚ 1958). The way in which enzymes speed up the chemical reaction is by lowering the activation
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Cell Biology- Osmosis‚ Cell Size and Diffusion and Enzymes 1.0 INTRODUCTION Cells are the basic building blocks of all living things. They provide structure for the body‚ take in nutrients from the food‚ convert those nutrients into energy‚ and carry out specialized functions. Cells also contain the body’s genetic material and can make copies of themselves. A cell is also a metabolic compartment where many different chemical reaction occur. There are two types of cells‚ eukaryotic and prokaryotic
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substance that increases rate of reaction upon addition to a certain reaction Page 3 Enzymes Act on substrates in a reaction Highly specific Breaks down complex macromolecules‚ synthesizes compounds essential for the cell Active site Enzyme-substrate complex Speeds up reaction rates Page 4 http://www.cas.muohio.edu/~wilsonkg/old/gene2005/syllabus_F03_23.jpg Page 5 Enzymes Require cofactors for activity Classified according to the types of reaction they
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