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Biochemistry

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Question
Answer
Lipids   provide energy, insoluble in water, soluble in organic solvents  
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Classes of Lipids   triglycerides, glycerolphospholipids, waxes, steroids  
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Triglycerides   made from 3 fatty acids and 1 glycerol  
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Glycerolphosholipids   made from 1 glycerine, 2 fatty acids and a phosphate  
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Waxes   1 fatty acid, & 1 alcohol, is an ester  
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Steroids   4 ring system, contain a 4 ring system called steroid nucleus  
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Fatty Acids   10-22 carbons, all even number of carbon, saturate of unsaturated  
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Saturated fatty acids   solid at room temp, high melting points  
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Unsaturated fatty acids   liquid at room temp, low melting point, in nature are cis  
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Palmitic acid   saturated, C15H31COOH  
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Stearic Acid   saturated, C17H35Cooh  
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Oleic Acid   unsaturated, 1db, C17H33COOH (w-9)  
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Linoleic Acid   unsaturated, 2db, C17H31COOH (w-6)  
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Linolenic Acid   unsaturated, 3db, C17H29COOH (w-3)  
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Essential fatty acids   body cannot make, must be obtained in diet, oleic linoleic and linolenic acid  
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Fat vs Oil   Fat solid, high melting point, saturated Oil liquid, low melting point, unsaturated  
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Monosaccharides   polyalcohol, 1 aldehyde or ketone, 3-10 carbons, do not break down  
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Dissaccharides   two monosaccharides  
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Maltose   grain sugar, glucose + glucose  
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Lactose   milk sugar, glucose + galactose  
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Sucrose   table sugar, glucose + fructose  
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Polysaccharides   large, many monosaccharides bonded by glycosidic bond  
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Proteins   most important and largest family of biochemicals, have nitrogen and some have sugar, made from alpha amino acids  
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Proteins in nature, d or l?   only have L  
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Cystine makes __ bonds   disulfide  
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Glycine has no   chiral center  
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primary structure   peptide bond  
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secondary structure   h-bond on backbone  
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tertiary structure   side chains can: h-bond, salt bridge, hydrophobic, disulfide  
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fibrous protein   insoluble  
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globular protein   soluble in blood and water  
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Oxidoreductase   oxidation/ reduction  
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hydrolase   add/ remove water  
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isomerase   changes one isomer to another  
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ligase   connects two molecules using ATP  
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Lyase   Adds/ removes double bond without water  
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transferase   transfers OH, NH, CH3.. from one molecule to another  
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Allosteric Enzyme   has more than 1 binding site, use other binding site to regulate activity  
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Zymogens   become active as needed  
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Competitive inhibitor   resembles substrate, reversible- active site remains, irreversible- active site destroyed  
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Noncompetitive inhibitor   does not resemble substrate, reversible- no shape change, irreversible- shape change  
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Nucleic acids   polymers made of monomers called nucleotides, made of sugar phosphate & base  
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DNA   Nucleus, store & transfer genetic code  
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RNA   outside nucleus, synthesize protein  
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Heterocyclic   have N in ring  
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Nucleoside   base & sugar  
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Nucleotide   base, sugar & po4  
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mRNA   carries info from DNA to cell to help synthesis of protein  
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tRNA   picks up specific AAs for protein synthesis  
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rRNA   helps synthesis of protein  
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DNA replication   making new DNA using polymerase  
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Transcription   synthesis of RNA with use of info from DNA  
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Translation   synthesis of a specific protein using mRNA  
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Amylopectin   storage of energy in plats  
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Amylose bond   alpha 1,4  
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Glycogen bond   alpha 1,4 & alpha 1,6  
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Cellulose bond   beta 1,4  
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