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NURS 1310 Course: Biochemistry for nursing (NURS 1310) Course time: Sunday, Tuesday: 9:30 – 11 L...
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Transcript of NURS 1310 Course: Biochemistry for nursing (NURS 1310) Course time: Sunday, Tuesday: 9:30 – 11 L...
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NURS 1310
Course: Biochemistry for nursing (NURS 1310)
Course time: Sunday , Tuesday: 9:30 – 11 L 403
Instructor: Dr. Tarek Zaida; [email protected]
Office location: B304
Office hours: To be announced
Introduction
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At the end of the course the student is expected to have:
gained a solid back ground on carbon based molecules
(organic chemistry) regarding their structures,
nomenclature, functional groups and basic reactions.
learnt the fundamentals of the structure as well as functions
of biological molecules (amino acids, proteins,
carbohydrates, lipids, nucleic acids).
learnt the basic concepts of enzyme catalysis and
intermediary metabolism.
NURS 1310Course Objectives
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Course schedule NURS 1310
Weeks TopicsWeek 1 Introduction to organic chemistry Week 2 Saturated Hydrocarbons (Alkanes, and their
halogen derivatives
Week 3 Unsaturated hydrocarbons, and their halogen derivatives
Week 4 Alcohols, thiols, phenols, and ethersWeek 5 Aldehydes, ketones and carboxylic acids
BiochemistryWeek 6-7 CarbohydratesWeek 8-9 LipidsWeek 10-11 Proteins Week 12-13 Nucleic acids Week 14 Enzymes and basic concepts of analysis Week 15 Introduction into metabolism3
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Organic Chemistry, a short course; 13th edition (2012); David Hart, Christopher Hadad, Laslie Craine, and Harold Hart.
Biochemistry, a short course; 1st edition (2010); John L. Tymoczko and Jeremy M. Berg, and Lubert Stryer.
Chemistry for the health sciences; 8th (1998); Georg Sackheim, Dennis Lehmann.
NURS 1310Textbooks
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Course attendance and course activities: 15 %
Participating in different Electronic tools 5%
Midterm exam: 30 %
Final exam: 50 %
NURS 1310Evaluation
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Organic Chemistry
Chapter 1Introduction to organic
chemistry
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Introduction to organic chemistry
• History:• Earlier in the eighteenth century it was
believed that in order to produce compounds by living cells, a “vital force” was needed.
• These compounds were classified as organic compounds.
• A german chemist, Friedrich Woehler in 1828 has shown this belief was incorrect
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How did Woehler end this belief?
• He prepared urea, a compound normally found in both blood and urine, by heating a solution of ammonium cyanate, which is considered an inorganic compound:
NH4CNO heat NH2-CO-NH2
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• Later on many other organic compounds were produced in the laboratory.
• This has led to the subdivision of chemistry into 2 parts:
• Organic• Inorganic
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Organic Chemistry
• Definition:
With the simplest definition, organic chemistry is known as the chemistry of carbon compounds.
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What makes Carbon so special to give it a whole branch of chemistry and place all
other elements in the other branch?
1. Carbon is unique in that it forms covalent bonds to other carbon atoms as well as to other elements.
2. There are millions of organic compounds known today
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Importance of organic chemistry
• It’s importance comes from its association with all living matter in both plants and animals
Examples:Proteins, carbohydrates, lipids, hormones,
vitamins, enzymes, and many other drugs are organic compounds.
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Comparison of organic and inorganic compounds
organic inorganic
Flammable yes no
Melting point low high
Boiling point low high
Solubility in water No (most) yes
Solubility in nonpolar liquids
yes no
Types of bonding covalent ionic
Reactions occur between
molecules ions
Atoms per molecules many few
structure complex simple
Electrolyte no yes
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Carbon and the Covalent Bond C usually forms covalent bonds with other
atoms by sharing electrons. Covalent bond: an evenly strong bond formed
between 2 atoms by sharing electrons. Carbon atom has 4 electrons so it can form a
maximum of 4 covalent bonds.
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Carbon–Carbon Single Bonds C has ability to share electrons not only
with different elements but also with other carbon atoms. In this case the electrons are shared equally between
the two identical carbon atoms As shown below in the example two C atoms may be
bonded to one another, and each of these carbon atoms may be linked to other atoms (Chains).
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Polar Covalent Bonds A polar covalent bond is a covalent bond in
which the electron pair is not shared equally between the two atoms.
Example: Hydrogen chloride molecule (HCl)
In case of HCl, the shared electron pair is attracted more toward the chlorine, which therefore is slightly negative (partial negative charge) with respect to the hydrogen.
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Multiple Covalent Bonds In a double bond, two electron pairs are
shared between two atoms. Nonbonding electrons, or unshared electron
pairs, reside on one atom. In a triple bond , three electron pairs are
shared between two atoms.
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Hydrocarbons are compounds composed of just hydrogen and carbon atoms.
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Valence The valence of an element is the number of
bonds that an atom of the element can form. The number is usually equal to the number of
electrons needed to fill the valence shell. Oxygen, for example, has six valence
electrons but a valence of only 2.
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IsomerismThe molecular formula of a substance
gives the number of different atoms present.
The structural formula indicates how those atoms are arranged.
Isomers are molecules with the same number and kinds of atoms but different arrangements of the atoms.
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Structural (or constitutional ) isomers have the same molecular formula but different structural formulas.
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Writing Structural Formulas In a continuous chain, atoms are bonded one after
another. In a branched chain , some atoms form branches from
the longest continuous chain.
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Abbreviated Structural Formulas In a continuous chain, atoms are bonded one after
another. In a branched chain , some atoms form branches from
the longest continuous chain.
25 Line segment structure
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Classification According to Molecular Framework
The three main classes of molecular frameworks for organic structures are acyclic, carbocyclic, and heterocyclic compounds.
Acyclic compounds contain no rings. Carbocyclic compounds contain rings of carbon
atoms. Heterocyclic compounds have rings containing
at least one atom that is not carbon.
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Acyclic compounds
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Carbocyclic compounds
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Heterocyclic compounds
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Allotropic Forms of Carbons
• Three forms are know:• Graphite: soft, dark black solid with good
electrical conduction.• Diamond: formed over long geologic time
periods, when graphite is subjected to extreme underground pressures. Diamond is clear, and is the hardest natural substance known.
• Fullerenes: the most common being C60 have shapes similar to soccer balls
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Graphite
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Diamond
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Fullerene
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Classification According to Functional Group
Functional groups are groups of atoms that have characteristic chemical properties regardless of the molecular framework to which they are attached.
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Classification According to Functional Group
Functional groups are groups of atoms that have characteristic chemical properties regardless of the molecular framework to which they are attached.
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