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Biochemistry Flashcards

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7814733238CarbohydratesStructure: carbon hydrogen and oxygen rule: always exactly twice as many atoms of H as atoms of O' Size: can be small molecules (simple sugars) can also be large molecules (complex carbohydrates) 3 types: Building block of_______ monosaccharides Glucose fructose galactose Anything that ends with the letters -ose0
7814962664Structure of a carbohydratecarbon, hydrogen, and oxygen1
7814982286rule of the carbohydratealways exactly twice as many atoms of H as atoms of O'2
7814987532Size of the carbohydratecan be small molecules (simple sugars) can also be large molecules (complex carbohydrates)3
7814827582Monosaccharides-Smallest carbohydrate (one sugar) also called simple sugar Glucose (blood sugar) fructose (fruits) galactose (dairy milk) -sames molecular formula shared between them but different structural formula -Building blocks4
7814932065Isomerssame molecular formula different structural formula5
7815000949Disaccharidesmade up of 2 monosaccharides bonded together Function: some provide a source of quick energy Examples -Maltose -sucrose -lactose Molecular formula C12H22O11 have twice as many H's as O's6
7815139810Maltose2 molecules of glucose malt sugar7
7815147892sucroseglucose and fructose table sugar8
7815153371lactoseglucose and galactose milk sugar9
7815061280Polysaccharidesmade up of many monosaccharides bonded together also called complex carbohydrates Examples (both made only of glucose) -Starch: used as food storage molecule in plants, long lasting energy in humans -cellulose: forms cell wall of plants source of fiber which acids in digestion in humans (only one that does not give us energy) Prevents constipation10
7815189055starchused as food storage molecule in plants, long lasting energy in humans11
7815192393celluloseforms cell wall of plants source of fiber which acids in digestion in humans (only one that does not give us energy) Prevents constipation12
7815198467condensation reaction dehydration synthesistwo or more organic molecules join to form a more complex molecule with water as one of the products13
7815270690Proteinsstructure: made of 5 elements carbon, hydrogen, oxygen, nitrogen, and sulfur -size proteins are large molecules -building blocks: proteins are composed of amino acids14
7815350558Building Blocksproteins are composed of amino acids15
7815326028size of a proteinare large molecules16
7815285779structure of a proteinstructure: made of 5 elements carbon, hydrogen, oxygen, nitrogen, and sulfur17
7815360195amino acidsbuilding block of proteins 22 different types can form many different types of proteins two types -10 are essential -12 are non-essential difference between the two essential are the amino acids we get from our food because our body does not make them (need them from diet) non-essentail our body produces so we don't need them from our diet18
7815448178essential10 are essential difference between the two essential are the amino acids we get from our food because our body does not make them (need them from diet)19
7815472517Non-essential12 are essential non-essential our body produces so we don't need them from our diet20
7815517633peptide bondthe bond formed between amino acids21
7815533871dehydration synthesis or condensation reactionwhen amino acid bond and peptide bonds form water is given off in the process22
7815542447polypeptide bonda chain of amino acids proteins are made of one or more of these chains23
7815566091shapethe order of amino acids determines the type of protein, the shape of the protein and the function -changing the order of amino acids in the protein changes the type of proteins that is made24
7815591314Disulfide Bondshold the shape folded of the amino acids together to make a protein25
7815626474Function of Proteinsknown as the building blocks of life are involved in most of the activities in the body and serve as many vital functions -function of structural proteins to build tissues and organs26
7815693250Enzymesare chemical tolls used to speed up chemical reactions (breaking things down) when it becomes to hot enzymes begin to brake down speed up chemical reactions -enzyme names ends in the letter "ase" -enzymes are complex organic proteins used to speed up chemical reactions -some enzymes put molecules together, others break apart -enzymes vary in shape the shape of an enzyme determines the substance (substrate) it will react with27
7816032946enzymescan only react with one specific type of sub-strait, the shape of the enzyme and the shape of the sub-strait must fit together for a reaction to occur28
7816065199Lock and key modelkeys can open only certain locks enzymes can only react with certain enzymes to carry out a reaction the enzymes and sub strait must join at the active site( spot on the enzymes where the reaction occurs)29
7816115954substratethe reactant in an enzyme catalyzed reaction30
7816182236active sitereaction between enzymes and substrate31
7815756297Denaturationchemical proteins become less stable molecules meaning their structure can be changed (broken apart) due to exposure to high temperatures32
7816233420catalaseenzyme dis the enzyme that brakes down hydrogen peroxide is found in all living cells is produced in the liver33
7816294359Hydrogen PeroxideH2O2 is a toxic by product of living cells, if its not eliminated from your cells they will die34
7816309998catalystssome simple inorganic molecules can speed up reactions35
7816341079manganese dioxideMnO2 is a catalyst then can be broken down hydrogen peroxide36
7816386368Enzymes and Catalysts-All enzymes are catalysts but not all catalysts are enzymes -enzymes are complex molecules catalysts are simple molecules -enzymes are organic molecules (carbon and hydrogen) catalysts are inorganic molecules37
7816450402lipids are made ofhydrogen carbon oxygen38
7816433617lipids-fats and oils -fats are solid, oils are liquid at room temperature have less oxygen then carbohydrates39
7816490804molecular formula of lipids# of oxygen is less than half of the # of hydrogen40
7816517588Building blocksGlycerol Fatty acid41
7816524063Glycerolthe backbone of all lipid molecules remains unchanged42
7816534021fatty acidsthree fatty acids are bonded to each glycerol model in most lipids saturated unsaturated43
7816555855saturatedfatty acids with carbon filled with hydrogen and only single bonds between carbon atoms44
7816562051unsaturatedfatty acids with carbon atoms not filled with hydrogen and some double bonds between carbon atoms45
7816583999dehydration synthesiswhen glycerol and fatty acids bond to form a lipid, water molecules are given off as a by product46
7816607186carboxly group47
7816628369function of lipids-used as stored source of energy in the body -protects some organs kidneys -helps to keep us warm (insulation) -used to build cell membranes48
7816658593Nucleic Acids structuremade of carbon, hydrogen, oxygen, nitgrogen, and phosphorus49
7816678390Nucleic Acids building blocksnucleotide each made of a sugar a phosphate group and a base50
7816689427Nucleotide structural formulawhen nucleotide bond together the sugar of one nucleotide bonds to the phosphate group of the adjacent nucleotide51
7816736944condensation reactionwhen sugar phosphate bonds form, water molecules are given off during the process52
7816748880Nucleic acid functionlarge molecules made up of nucleotide used to store genetic information (DNA-controls what we look like) smaller molecules used to make proteins (RNA)53

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