Biological Molecules Lab Report EXERCISES 1 & 2 QUALITATIVE TESTING FOR BIOLOGICAL MOLECULES 1) Complete the table for your group ’s samples. Be sure to clearly indicate in the blue line whether or not your sample was positive (+) or negative (-) for the given test. Then below that in the white area‚ type your observations‚ mainly focusing on the color‚ but also the layering as appropriate. Be sure your interpretations match your observations! The chart area will expand as you type. BENEDICT ’S
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BSC 1020 – Homework Unit B The Molecules of Life This homework is worth 25 points of the 900 points available in the course. Please use the book‚ PPT lecture handouts‚ and internet to answer the following six questions: Question 1 (8 points) Mr. Tony‚ a biology teacher‚ gives his student Ziad four samples and tells him they are lysine (an amino acid)‚ lactose (a disaccharide)‚ insulin (a protein hormone)‚ and RNA. The samples are in test tubes marked 1‚ 2‚ 3‚ and 4‚ but Ziad is
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chemistry. For example‚ the albedo of the earth’s atmosphere is controlled by the absorption of infra-red light by green house gasses‚ which include CO2‚ H2O‚ and CH4. For normal modes that have a changing dipole moment‚ the vibrational spectrum of a molecule is observable using infrared absorption. Such modes are said to be IR active. Raman spectroscopy is used to observe normal modes that are not IR active. The fundamental vibration frequency of a normal mode is dependent on the isotopes of the atoms
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Electrical conductivity One to five percent of the caffeine molecule dissociates in water‚ proving that the compound is a weak electrolyte. A substance that completely dissociates in a solution‚ such as water‚ is considered an electrolyte and can therefore conduct electricity. This dissociation is caused by the atoms’ minimal nuclear charge‚ allowing the substance to break apart entirely into its ions. Ions are mobile‚ which induces a current and contributes to the substance’s high electrical conductivity
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Bio-Rad Protein Assay INTRODUCTION Proteins are large complex organic macromolecules which are utilized for many important roles in the body. Proteins function in structure‚ transport‚ energy conversions‚ and play an important role in defense against diseases. Protein is also important for muscle recovery‚ which is why it is commonly associated with fitness. Though your body will always absorb 1g of protein the same way every time‚ protein companies like to make their product competitive
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Cl-18). COVALENT BONDS: form when two atoms share one or more pairs of outer-shell electrons (ex: methane=CH4‚ Carbon with 4 hydrogen molecules attached to its outer shell‚ because carbon has 4 spots open in its outer shell).HYDROGEN BONDS: in water‚ H2o‚ the 2 hydrogens share electrons with the 1 oxygen‚ making oxygen slightly – and hydrogen slightly + (a polar molecule is one with an uneven distribution of charge)‚ these opposing charges attract each other. 7. Water is structured so that the (-)part
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Biologically Important Molecules Carbohydrates‚ Proteins Lipids And Nucleic Acids Professor Anthony Depass Biology 1 9/25/14 Introduction: By completing lab exercise 6 : Biologically Important Molecules‚ we are able to perform tests such as the Benedicts Test for Reducing Sugars‚ Iodine Test‚ Biuret Test‚ Sudan IV Test‚ and lastly the Grease-Spot Test that detect the presence of biologically important carbohydrates‚ protein lipids and nucleic acids. Most known compounds in living organism
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fermentation. In our lab we investigated alcoholic fermentation by using yeast‚ which can flourish in an low energy environment in anaerobic conditions. In this lab our goal was to discover the rate at which yeast will ferment different sized molecules of carbohydrates. In order to perform our experiment we made use of water‚ glucose‚ sucrose‚ and starch. It was hypothesized that glucose‚ sucrose‚ then starch would all be used to produce energy during fermentation. Being that glucose is a simple
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Physical Properties of Organic Molecules Abstract Identifying the physical properties of compounds can be useful in several ways. It helps us to determine the structure of certain compounds‚ the purity of substances and if a substance is not pure we can figure out how to separate contaminating substances from a compound. In this experiment‚ I learned how to determine a solid’s melting point and why some melting point ranges may be broader than others.
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and Ashley os upset that her dad is gay‚ later Ashley meets a boy named Jared who isn’t a good influence on her. Jared forces Ashley to drink too much she passes out to take pictures of her naked but Stewart than saves her. In We are all made of molecules‚ Susin Nielson reveals how Ashley discovers with the help of her friends and family‚ and throughout her journey‚ she learns to love and accept her family. Stewart had a big impact on Ashley changing and discovering her identity because he helped
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