subunit. A dimer is known to be the simplest sort of quaternary structure as it contains two identical subunits. Interactions between subunits of a protein containing a quaternary structure are usually weak interactions such as hydrogen bonding‚ ionic bonding‚ and van der Waals. It is important to note that quaternary structures can be simple such as two identical subunits or even complex where dozens of different polypeptide chains come
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the foundation for the classical architectural orders and greatly influenced the roman’s architecture. It is well known for their temples and orders. There are five main architectural orders in classical architecture including the Doric order‚ the Ionic Order‚ Corinthian Order‚ Tuscan Order and Composite Order which named by the Romans. The Greece created the first three orders. The Doric was the earliest and simplest of the orders. It was mostly fluted sometimes smooth-surfaced‚ it had no base
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balanced chemical equations (2.2‚ 2.3) Interpret balanced chemical equations in terms of chemical amount (in moles) (2.3) Convert between chemical amount and mass (2.4) Classify chemical reactions (2.5‚ 2.6) Predict the solubility of elements and ionic and molecular compounds in water (2.6) Predict products for chemical reactions (2.5‚ 2.6) Memorized molecular compounds pg. 34 Sample Questions: Chapter One Review pg. 40 #11-19‚ 25 Chapter Two Review pg. 66 #5-7‚ 9 Unit Review pg. 68
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dissolved in water is called an electrolyte a non-electrolyte is a substance that does not conduct an electric current in aqueous solution NH4+‚ NO3-‚ and group 1A cations are ions that always form soluble ionic compounds a precipitation reaction is a reaction in which two or more water-soluble ionic compounds react in aqueous solution to form one or more insoluble precipitates. a precipitate is a solid that separates from a solution a species that donates a proton - acid a species that accepts
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examine a variety of reactions including precipitation‚ acid-base‚ gas forming‚ and oxidation-reduction reactions. 2. To identify the products formed in these reactions and summarize the chemical changes in terms of balanced chemical equations and net ionic equations. 3. To identify the species being oxidized and reduced in oxidation-reduction reactions and determine which species is the oxidizing agent and the reducing agent. Chemical equations represent what occurs in a chemical reaction. For example
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the Grecian style of architecture. Though Neolithic in nature‚ the first Architects laid the basic foundations for all architecture to follow in Greece and the rest of the world. The shapes of these early homes carry through all the way from the Ionic to the Corinthian order. "The next group of settlers were the Minoan architects. Their towns were mostly residential with little or no temples and public places. Unlike earlier people‚ their houses were private and had many rooms to separate rooms
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SYNTHETIC EXPLOITATION OF ENZYMES: BIOCATALYSIS IN ORGANIC SOLVENTS: FUNDAMENTALS ENZYMES IN ORGANIC SYNTHESIS 1. Enzymes catalyze a broad spectrum of reactions with high turnover numbers. Rate enhancements approach 1012 fold. 2. Enzymes may accept a wide range of substrates. 3. Enzymes are highly regio and stereoselective. 4. Enzyme reactions take place under mild conditions; this minimizes problems of isomerization and racemization. 5. Enzymatic processes are less hazardous and polluting
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Chemical Bonding Lab Chemical compounds are combinations of atoms held together by chemical bonds. These chemical bonds are of two basic types—ionic and covalent. Ionic bonds result when one or more electrons from one atom or group of atoms is transferred to another atom. Positive and negative ions are created through the transfer. In covalent compounds no electrons are transferred; instead electrons are shared by the bonded atoms. The physical properties of a substance‚ such as melting point
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Structure and bonding Ionic bonds are chemical bonds formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between an metal and a non-metal. The metal loses an electron or electrons form its highest energy level becoming a positively charged Ion and the non-metal gains an electron or electrons in its highest energy level‚ becoming a negatively charged Ion. Covalent bonds are strong bonds between two non-metal atoms. A covalent bond forms when two
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chlorine.This is how the halogens can displace each other chlorine + sodium bromide → sodium chloride + bromine Task 2 There are two types of bonding.Covalent bonding and ionic bonding. Ionic bonding occurs from positively ions and negatively ions‚which attracts each other and bind together to form ionic compounds.Each ion is surrounded by an oppositely charged ion held by electrostatic attraction. There are several way in which atoms can chemically form to create compounds.There are
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