both these features but some of them only have one of the features. What are the roles of digestive enzymes? Digestive enzymes help break down certain foods like how lipase enzymes help digest fats and how protease enzymes break down proteins. Also amylase enzymes break down carbohydrates and cellulose enzymes help break down cellulose molecules into simple sugars. There are 4 different digestive enzymes all with different purposes to help achieve the one goal. Without these enzymes it would be extremely
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muscle that is covered by taste buds. It assists the process of chewing and man oeuvres food to a position where it can be swallowed easily. Salivary glands — begin the process of chemical digestion through the secretion of the enzyme‚ salivary amylase. This enzyme begins the process of breaking down carbohydrates. Saliva also moistens food which helps it to be swallowed more easily. Teeth — break food down mechanically into smaller particles that may be ingested more easily. Pharynx — allows
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BIOLOGY NOTES. UNIT 1: Photosynthesis Photosynthesis Word Equation: Light Carbon Dioxide + Water Oxygen + Glucose Chlorophyll How to test a leaf for starch: 1. Dip leaf boiling water for about 1 minute to soften it‚ stop further chemical changes and make the cell more permeable. 2. Turn off Bunsen burner. Put the leaf into the
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1. INTRODUCTION 1.1 ENZYMES THE ENZYMES SPEAK!! “We are the catalysts of the living world! Protein in nature and in action specific; rapid and accurate; huge in size but with small active centres; highly exploited for disease diagnosis in lab centres”. DEFINITION Enzymes may be defined as biocatalysts synthesised by living cells. They are protein in nature (exception RNA acting as ribozyme) colloidal and thermo-labile in character and specific in their action. HISTORICAL BACKGROUND In
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Topic 9: Plant Science 9.1 Plant Structure and Growth 9.1.1 Draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. Cross-section of a stem Part of plant | Purpose | Epidermis | Surface of the stem made of a number of layers often with a waxy cuticle to reduce water loss | Cortex Tissue | Forming a cylinder of tissue around the outer edge of the stem. Often contains cells with secondary thickening in the cell walls which provides
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precipitate means glucose is present in vast amounts. Food Test 2: Test for Starch – with Iodine solution. Iodine solution is used to identify the presence of starch- a complex carbohydrate. Iodine solution (potassium iodide solution) reacts with amylase – a type of starch – whereby a blue-black polyiodide complex is formed. Method 1) Mix smalls amount of each food samples (i.e.‚ Egg lumen‚ cylindrical piece of potato tuber‚ bread crump and crisps) in different test tubes with distilled water
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Chapter I - Background of the Study A. Introduction The chalk is a white porous sedimentary rock‚ a form of sedimentary rock composed of mineral calcite. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed belonging to the division of haptophytes. They function as a special calcium carbonate. In this investigatory project‚ we study the effectiveness of eggshells as an alternative ingredient in chalk production. The study is very efficient
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Biology Summer Task Our digestive systems contain glands. These glands produce enzymes. Enzymes are catalysts. Catalysts make chemical reactions happen quicker and easier. Digestive enzymes help us to break down food easier. Our bodies make lots of different digestive enzymes. Each enzyme breaks down a particular food. When an enzyme has broken down one food molecule‚ it can then break down another molecule of the same kind. It can do this over and over again. It makes the reaction happen without
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fist stage involves the rehydrating the cell by absorbing water. This allows the cell to become metabolically active. After water absorption‚ gibberellin is produced in the cotyledon of the seed. The enzyme gibberellin stimulates the production of amylase‚ which catalyzes the digestion of starch and converts it into maltose in the food the seed stores. Maltose is then transported to the growth regions of the seed. Maltose is converted into glucose‚ which can either be used in the cell for aerobic cellular
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digestive system is a process and is made up of different components that all work together. The digestive system starts with the saliva in your mouth. The salivary glands recognize the sight and smell of food. The saliva contains the enzyme salivary amylase which begins the chemical digestion of food. The food you eat is moistened‚ chewed up by your teeth and then is transferred into a bolus. Once the bolus leaves the mouth‚ it moves into your pharynx‚ where it is then swallowed. Once the bolus reaches
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