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Biochemistry Flashcards

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5258316536RiboseC5H10O5. Pentose0
5258319750GlucoseC6H12O6. Hexose1
5258322847MaltoseC12H22O11. Disaccharide2
5258330429Similarities between all carbohydrates1. Al make up C,H and O 2. Names end in "OSE" 3. All carbs are in ration of approximately 1:2:1 C:H:O3
5258342033MonosaccharidesBasic unit of sugar. 1. Low in molecular weight 2. Most have the molecular formula of C6H12O6 3. Ex: Glucose/fructose/galactose-all C6H12O6 4. Contain large amount of energy 5. Sweet and soluble-small enough to easily pass through the cell membrane4
5258356534IsomersHave the same molecular formula but have different structural formulas/different physical properties5
5258372426DisaccharidesDouble sugars. 1. C6H12O6+C6H12O6-->C12H22O11+H2O Glucose+glucose-->maltose+water ------------------------------------------------------------------ Dehydration synthesis6
5258432845Dehydration synthesisRemoving a water to form a more complex molecule7
5258435542Polysaccharides1. High molecular weight 2. Made of long repeating chains of small sugar units (monosaccharides) 3. Polymers 4. Organisms store excess sugar in the form of polysaccharides8
5258448237StarchExcess sugar stored in plants (found in seeds, roots, and stems)9
5258456322Are polysaccharides soluble or insoluble?Insoluble because they are too big to fit in the cell membrane10
5258460538GlycogenAnimal's excess sugar is stored in the form of glycogen which is stored in the liver.11
5258466934CelluloseMajor component of cell wall. Most abundant carbohydrate12
5258471434ChitinMakes up the exoskeleton of insects13
5258494255Organic compounds in a carbohydrate contain...Carbon and hydrogen. It may also contain N,S,P and other traces of elements.14
5258509768What does carbon have in it's outer shell?Carbon 4e- in its outer shell which allows 4 covalent bonds to occur15
5258534245Bonds can be...Single: C-C Double: C=C Triple: C (three lines) C16
5258552839Arrangements of organic compounds in a carbohydrate...Vary in size and structure Ex: H2O/CO2/C6H12O6/C12H22O1 not organic, not organic, organic, organic17
52585922484 types of organic compoundsCarbohydrates-C,H,O Lipids(fats)-C,H,O Proteins-C,H,O,N Nucleic Acids- DNA,RNA- C,H,O,N,P18
5258611073HydrolysisWater splitting. Adds water to the place it was once removed. Water breaks the bond and splits the are molecules into its smaller units. C12H22O11+H2O-->C6H12O6+C6H12O619
5258629994To test the presence of sugars:Benedict's solution tests for the simple sugars by turning from blue--> brick red in heat20
5258638342To test STARCHLugol's iodine will turn from amber to blue/black21
5258912938Lipid typesFats (solid at room temperature), Oils (liquid at room temperature), Waxes, Phospholipids22
5258938346Organic compounds in lipids.Composed of C,H and O where the ratio of H:O is greater than 2:123
5258957507Are oils soluble or insoluble in water?Insoluble24
5259001019Consistency of oilsGreasy consistency25
5259010695Oils are sources of...Stored energy and make up a component of the cell membrane.26
5259017723Where are oils stored in?Adipose tissue. Provides insolation, provides cushioning, part of cholesterol, lines internal organs.27
5259062766Structure of a lipid.Ex: C57H100O6 (triglyceride) Ratio of H:O is greater than 2:1, however they are considered small molecules and are not polymers28
5259081359*What are lipids made of?1 glycerol+3 fatty acides=1 lipid + 3H2O29
5261916635Carboxyl group30
52619411391 lipid plus 3 waters makes...A protein31
5261965047Dehydration synthesis of a fat1 glycerol + 3 fatty acids---> 1 fat + 3 waters32
5261977561Components that make up a fat formula3 waters + 1 fat ---> 3 fatty acids + 1 glycerol33
5262003252Saturated fats1. Solid at rm temp Ex: butter/lard/bacon grease *2. ALL carbon bonds are single Ex: C5H10O234
5262013965Unsaturated fatsOne or more C-C bonds are double or triple bonded35
5262028207Characteristics of unsaturated fatsSolid at rm temperature, oils.36
5262030089Characteristics of saturated fatsClog arteries, cause strokes, atherosclerosis37
5262036803All fats are...Hydrophobic38
5262058708Monounsaturated fatty acidRatio of H-O greater than 2:139
5262067205Polyunsaturated fatty acid40
5262070973Lipids are important becauseIt is a component of the cell membrane. They line major organs. Provide cushioning. Source of stored energy.41
5262082720Proteins are composed of...CHO and N42
5262092315*Are proteins large or small molecules?They are extremely large molecules. Ex: hemoglobin43
5262100325*Are proteins shape specific?YES44
5262103872Proteins form the basic structures of:Membranes, collagen, blood plasma and ENZYMES, hair/nails, hormones, connective tissue, pigments, antibodies, muscle cells45
5262117690Building blocks of proteins...1. Amino acids 2. 20 amino acids found in nature 3. Structure is determined by arrangement of their amino acids (according to DNA) Ex: Glycine46
5262130383Amine acid47
5262134915Dipeptide48
5262140694How do proteins form?Dehydration synthesis49
5262142011Peptide bond50
5262148492Polypeptide chain3 or more amino acids put together by dehydration synthesis forms a polypeptide chain51
5262159434*What action does heat have on protein?Proteins get DENATURED in heat. This means the bonds get broken and the STRUCTURE of the protein becomes DISTORTED. Proteins also become denatured with changes in pH52
5262174496To test for the presence of proteinBIURET solution turns from light blue to lavender when a protein is present53
5262184302EnzymesAll enzymes are proteins, but not all proteins are enzymes.54
5262190163CatalystEnzyme. All chemical reactions are accompanied by a specific enzyme-specific for that reason55
5262200819*Function of a catalystRegulate the rates of reactions56
5262204175What are enzymes larger than?The substrate they work on/accompany57
5262208793Induced fit58
5262211515Active siteCreates a temporary association between the substrate and enzyme.59
5262219114Do enzymes get used up?No, they are free to perform over and over again.60
5262224188Enzymes are...1. Catalysts 2. Proteins 3. Names end in "ASE" (protease, lipase, maltase) *4. Unaffected by chemical reactions 5. SPECIFIC 6. Reusable61
5262241195CoenzymeSide group of atoms attached to an enzyme *Non-protein *Vitamins62
5262251830As temperature increases in an enzyme...The rate of enzyme action increases; HOWEVER, if the temp is too high, denaturation will occur. The enzyme becomes deactivated63
5262268143Deoxyribonucleic acids (DNA)Organic compounds composed of CHON and P. Double stranded helical shaped molecule made of thousands of nucleotides. Polymer.64
5262270553Basic subunit of nucleic acids...Nucleotide65
5262275784Nucleotide is made up of 3 parts1. 5-carbon sugar 2. phosphate group 3. nitrogenous base66
5262288688Who found DNA?Watson and Crick67
5262296558*The 2 strands of DNA are held together byWEAK HYDROGEN BONDS that hold the nitrogenous bases (N-bases) together. These must be weak so they can open up to reveal our genetic code.68
5262312464DNA has its own language withinN-bases69
5262316234A-TAdenine-Thymine70
5262320232C-GCytosine-Guanine71
5262327461*How does DNA control cellular activities?DNA codes for all proteins in an organism72
5262330100DNA replicationGenetic information is passed to chromosomes succeeding (new) cells73
5262337485What does DNA carry?DNA carries the code for assembling enzymes and proteins that function in cellular metabolism74
5262344886Is DNA mobile?DNA doesn't leave the nucleus-not mobile75
5262351902*mRNADNA transfers it's genetic code to a MOBILE MOLECULE called mRNA76
5262357125RNASingle stranded molecule made up of nucleotides. The sugar is ribose (5c)77
5262367423Instead of the N'base "T", RNA has..."U" uracil which is complementary to the N-base "A" adenine78
5262372196A-UAdenine to Uracil79
5262377471Three types of RNA1. Messenger RNA (mRNA) 2. Transfer RNA (tRNA) 3. Ribosomal RNA (rRNA) All of these function in protein synthesis80
5262389365How is RNA formed?A molecule of DNA "unzips" to reveal 2 strands of N-bases in a SPECIFIC ORDER. This acts as a template for producing a complementary strand of RNA.81
5262405345The process of transferring genetic code from DNA-RNA isTranscription (in the nucleus)82
5262412622How does RNA form a polypeptide chain?RNA moves from the nucleus to the cytoplasm with the code to start the formation of a polypeptide chain. This molecule in RNA.83
5262419493A-U C-GRNA84
5271032529What does the new mRNA molecule do?It moves into the cytoplasm. At ribosomes (either free or on the rough ER), the formation of polypeptides begin.85
5271043642What is a codon?Codon is a triplet of N-nases that code for a specific amino acid on a mRNA strand. ex: UUU is the codon for amino acid phenylalanine G.86
5271065344What does a tRNA molecule bring to place at the ribosome?A tRNA molecule brings the amino acid into place at the ribosome.87
5282069659What does tRNA transfer?tRNA transfers an amino acid complementary to it's anticodon to the mRNA codon88

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