environment by inspection or using genetic techniques. The nutritional requirements of a bacterium such as E Coli are revealed by the cell’s elemental composition. These elements are found in the form of water‚ inorganic ions‚ small molecules and macromolecules which serve either a structural or functional role in the cells. Bacteria thrive by four things oxygen‚ food (nutrients)‚ warmth and time but two others can be moisture and acidity. Nutrients are needed for energy‚ nitrogen (for DNA and proteins)
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present in either of the seeds. A catalyst is very similar to track spikes. Spikes increase a runner’s speed‚ as a catalyst speeds up the chemical reaction time in a plant. Neither the catalyst nor shoes are changed in these actions. Enzymes are macromolecules that act like catalysts. A catalyst will lower the activation energy within a seed‚ which will allow the reaction to go quicker. An avocado seed is used in this experiment. For this type of seed to start the process of germination‚ the favorable
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Biologists over the years have observed that some species evolve in response to the changes in another. These changes can occur in different levels and in different intensities. Some species exhibit molecular changes such as the structures of macromolecules like proteins or lipids‚ while others show morphological and behavioural changes in the presence of other organisms. Some evolutionary changes that happen in a species can be a change that is most especially directed towards its adaptation in
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Title: Testing For Macromolecules Objective: Introduction Proteins are complex molecules which consists of carbon‚ oxygen‚ hydrogen and nitrogen. All proteins are made up of one or more polymers‚ known as polypeptides. Its monomers are amino acids. Protein can be divided into primary structure‚ secondary structure‚ tertiary structure and quaternary structure. It is important for all living things in the world as they form enzymes‚ antibodies and hormones. Materials and Procedures:
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dimensional structures because of the sequence of amino acids. Proteins also contain functional groups from each amino acid. These groups are reactive and also contribute to protein function. Proteins also interact with one another and with other macromolecules. Proteins can be rigid or flexible. This allows certain proteins to be found in different parts of the cell such as the cytoskeleton or in soft tissue. They are the most complex and most diverse in chemical composition‚ conferring upon the different
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covalent‚ non-polar covalent] will form based on the periodic chart and table of electronegativities? What are intermolecular hydrogen bonds? How do they form? How would you determine whether a molecule is likely to dissolve in water or not? Macromolecules (Structures (monomers‚ polymers)‚ roles and structures) Carbohydrates Monosaccharides Disaccharides Polysaccharides (glycogen‚ starch‚ cellulose) Lipids (Mainly hydrophobic) Fats and oils (saturated vs monounsaturated vs polyunsaturated
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Biochemistry- The Basics An Atom is the basic unit of a chemical element ( smallest unit for measuring chemical & physical properties) Smallest particle of an element is an atom A Particle is a small portion of matter Matter is composed of elements___ Matter makes up everything in the universe. An Element is a pure substance that cannot be broken down into a simpler substance. ex. carbon‚ hydrogen‚ etc A molecule is a group of atoms bounded together ex O2 A chemical compound
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molecules and particles on the basis of buoyant density‚ by centrifugation in a concentrated sucrose or caesium chloride solution. Differential centrifugation This is a technique that allows the separation of cells‚ organelles and macromolecules‚ depending on their size‚ shape and density.. The difference between differential and Density gradient centrifugation includes; In differential centrifugation 1. homogenized organ is used and placed in centifuge tube‚ 2. separation
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Biuret Reagent Biol. 1040 Section 1005 Introduction The human body consumes carbohydrates‚ lipids‚ and proteins each day by eating a variety of foods. These foods are required for energy and human growth. Proteins are a diverse group of macromolecules with many different functions (Mbuthia‚ 2012). Many are structural components of bone‚ muscle‚ hair‚ tissue‚ etc. Others are enzymes that speed up cellular reactions. All proteins are made up of amino acids (Johnson‚ 2010). The purpose of this
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the amount of glucose in three unknown samples namely A‚ B and C INTRODUCTION: Biological molecules are held together by covalent bonds‚ hydrogen bonds among others bonds in various ways to produce large molecules called macromolecules. Simple organic compounds and macromolecules molecules vary in structure and can be distinguished by their functional groups. Molecules of a certain class have similar chemical properties because they have the same functional group. A chemical test that is sensitive
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