Tetrapyrrole compounds: chlorophyll and heme groups By Erwin Lim 1. Tetrapyrrole compounds A tetrapyrrole compound is a chemical group that consists of four pyrroles that are joined together by covalent bonds‚ forming a porphyrin ring. They are naturally occurring pigments‚ which are used in many biological processes (Berg‚ 2009). The basic structure of a tetrapyrrole is as seen in Figure 1‚ while the basic structure of a pyrrole is as seen in Figure 2. Figure 1.Tetrapyrrole Compound (Berg‚ 2009)
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Carbon Compounds Activity 1: Organic Compounds: Are they Useful? Objective: Recognize the uses of common organic compounds. Materials: paper and pen‚ pentel pen‚ manila paper Labels or Pictures of the following products: gasoline‚ acetone‚ kerosene‚ acetic acid‚ LPG‚ ethanol Procedure: 1) With your group mates‚ use the labels/pictures of the materials to answer the following questions: a.) Complete the table about the uses of the compounds. Indicate using a check mark the uses of
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TYPES OF COMPOUNDS Endocentric: AB = B A= modifier B= head Take a look at the following example toothpaste Is it a type of tooth? or; Is it a type of paste? Definition of toothpaste from www.macmillandictionary.com soft thick subtance (paste) that you put on a toothbrush to clean your teeth Tooth is the modifier (A) of the head (B) paste. AB=B toothpaste = a type of paste for brushing teeth In most cases the head is the rightmost component of the compound. English N-N Compounds *
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August 15‚ 2012 COMPOUND MICROSCOPE A compound microscope is an optical instrument used to see objects that are too small for the naked eye. A compound microscope is a microscope fitted with two or more convex lenses. The high magnification produced by these lenses together enables a detailed study of micro-organisms‚ cells and tissues. These types of microscopes are therefore widely used in scientific and medical research. The basic design of a compound light microscope consists
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Abstract: When ionic compounds are dissolved in water‚ they break apart into ions. In this lab the opportunity to mix two ionic solutions and observe the results was given. Some ions will remain dissolved and uncombined in the solution even when they are mixed with other ions. When other ions are mixed‚ they form compounds that appear as cloudy or grainy precipitates. The objective of this lab was to observe the formation of compounds and to write the names and formulas of ionic compounds. It is also to
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The Molar Mass of a Volatile Liquid Adam Kozdrowicz Adam Li 11/05/12 Mr. McCready Purpose: The purpose of this procedure is to determine the molar mass of an unknown liquid‚ evaporate a sample of a liquid substance‚ and measure certain physical properties of the substance as it condenses. Procedure: 1. Obtain safety goggles. 2. Trim a piece of aluminum foil so that it covers the top of a small 13 x 100 mm test tube. Secure the foil with electrical tape. Make sure
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* Introduction to Organic Chemistry Understand the basis of drawing organic structures Depicting 3-D structures in 2-D Most organic compounds have a three-dimensional structure. How do we represent structures on our two-dimensional page? For example‚ methane is a tetrahedral molecule: Bonds in the plane of the paper: Bonds coming towards the observer: (out of the page) Bonds going away
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pH paper Small test tubes and rack Graduated cylinder (10 ml) Evaporating dish DISCUSSION Organic chemistry is the study of compounds containing carbon (excluding CO2‚ CO‚ carbonates‚ elemental carbons‚ and others). The two primary sources of organic compounds are oil and coal. Other sources of organic compounds are plants‚ animals‚ and microorganisms. Hydrocarbons are organic compounds that contain only carbon and hydrogen. There are various classifications of hydrocarbons. Classification
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Organic chemistry Organic chemistry is one of the ‘branches’ of chemistry and is seen as distinct from other branches‚ such as inorganic and physical chemistry. It can be described as the chemistry living processes (often referred to as biochemistry) but extends beyond that. It focuses almost entirely on the chemistry of covalently bonded carbon molecules and as well as life processes‚ it includes the chemistry of other types of compounds‚ including plastics‚ petrochemicals‚ drugs and paint
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BINARY COMPOUNDS -Compose of two kinds of atom Polyatomic Ion | Name | OH-1 | hydroxide | SO4-2 | sulfate | PO4-3 | phosphate | NO3-1 | nitrate | CO3-2 | carbonate | HCO3-1 | hydrogen carbonate or bicarbonate | ClO3-1 | chlorate | NH4+1 | ammonium | TWO NON-METALS - Give the name of the positive ion followed by the negative ion ending with -ide -Greek prefixes are used CO-carbon monoxide CO2-carbon dioxide NO-nitrogen
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