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AP Bio: BioChem Flashcards

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7284546627Hydrogen Bond-Attraction between partially positive (hydrogen) and partially negative (oxygen) between molecules -Polar(charged) -Covalent0
7284560079Properties of water-Thermal properties: specific heat, heat of vaporization -Cohesive properties: cohesion, adhesion, surface tension, capillarity -Solvent properties: due to water being a hydrophilic molecule -Density1
7284570775Hydrophobic Substance-Nonpolar (no charge) -Dissolves in other hydrophobic substances -Hydrophobic interactions -Ex: lipids2
7284571718Hydrophilic Substance-Polar (charged) -Dissolves in water -Hydrogen bonds -Ex: glucose3
7284586192Macromolecules-carbs, lipids, proteins, nucleic acids -all living organisms must have4
7284589628Catabolic reaction-break down molecules -add water -hydrolysis -ex: cell respiration5
7284593860Anabolic reaction-bind molecules -removes water -condensation -ex: photosynthesis6
7284638478Carbohydrates-energy compounds -made of sugars7
7284656822Monosaccharide-A single sugar molecule -Glucose, Galactose, Fructose, Ribose8
7284674278Glucose-Monosaccharide -From plants -Used in cellular respiration9
7284677742Fructose-Monosaccharide -From plants -Sugars from fruit10
7284682245Galactose-Monosaccharides -From animals -Found in milk11
7284689051Ribose-Monosaccharides -Found in DNA and RNA12
7284693461Disaccharides-A double sugar, consisting of two monosaccharides joined by condensation to form a glycosidic bond -sucrose, lactose, maltose13
7284702198Glucose+GlucoseMaltose14
7284705508Glucose+GalactoseLactose15
7284708196Glucose+FructoseSucrose16
7284708197Maltose-from animals -broken down from starch -dairy17
7284713063Lactose-from animals -dairy18
7284713897Sucrose-table sugar19
7284718082Glycosidic Bond-when sugars are joined together -hydrolysis -covalent20
7284721329Polysaccharide-Long chains of linked monosaccharides -Starch, cellulose, glycogen21
7284726695Starch-Polysaccharide -Stored sugars in plants -From plants22
7284729081Cellulose-From plants -Structure of cell wall -Humans cannot digest -Hardest to digest because glucose alternating directions23
7284735219How are carbohydrates made?Through photosynthesis24
7284753103Lipids- found in fats, oils, and waxes -nonpolar (hydrophobic) -cis/trans fatty acids, triglycerides, steroids, cholesterol25
7284774152Function of Lipids-Long term energy storage: harder to break down than carbs because nonpolar -Insulation: store energy for later, thermoregulate -Steroid hormones: all sex hormones made of lipids -Buoyancy: lipids less dense than water (why oil floats on water)26
7284784978Building blocks of lipids-fatty acids and glycerol27
7285111476Fatty Acids-COOH, carboxyl -saturated or unsaturated -monomers of lipids -used in Ester Bonds28
7285113076Carboxyl-COOH -what makes a molecule an acid29
7285121408Unsaturated Fatty Acid-bent chain -liquid at room temp -double bonds -good fat, found mostly in plants -naturally produced30
7285124716Saturated Fatty Acid-straight chain -solid at room temp because straight chains stack up -no double bonds -mostly found in animlas31
7285153818Triglyceride-lipid made of three fatty acids and a glycerol -Ester Bond -come from diet, or produced from carbs -source of energy -belly+hip fat32
7285172012IsomersSame atoms but different arrangement.33
7285176094CIS Fatty Acid-unsaturated (hydrophobic, nonpolar) -Hydrogen same side as carbon -Can artificially turn -naturally produced fats -less likely to stack because they're bent, so they flow more easily -liquids -ex: Omega 6 and Omega 334
7285222616Trans Fatty Acid-unsaturated unless turned into a solid, saturated fatty acid -Hydrogen opp carbon -bad, hardly naturally produced, straight configuration makes it easy for them to stack onto each other which makes it hard to break down35
7285241448Phospholipid-cell membrane structure -phosphate head(hydrophilic) and lipid tail(hydrophobic);amphipathic molecule -saturated and unsaturated tail36
7285254258Omega 6,3,9 Fatty Acids-unsaturated fatty acids -Carbon on methyl end=omega -ex: linolenic acid is 3,6,9 -used for energy -obtained from diet37
7285268148Steroids-lipids -sex hormones -part of cell membrane -produce cholesterol38
7285271655Lipoproteinstructure that transports lipids through the bloodstream and lymph since lipids can't dissolve in blood due to their hydrophobic nature39
7285297127Low density lipoprotein-cholesterol -contributes to plaque formation -bad!!40
7285313766High density lipoprotein-picks up cholesterol in blood -transports cholesterol to liver, adrenals, ovaries, testes -turned into bile or steroid hormones -want more high density lipoproteins than low41
7285330191What makes up proteins?Amino acids42
8158258042Most commonly occurring elements in biological systemsSPONCH S- sulfur P-phosphorous O-oxygen N-nitrogen C-carbon H-hydrogen43
8158356436What is the main function of glucose in the cell?cell respiration44
8158361428What is the opposite of a catabolic reaction?Anabolic Reaction45
8158361429Explain how the molecular structure of water allows it to dissolve a substance such as table saltSince the molecular structure of water is polar, it allows other hydrophilic molecules, like salt, to dissolve within it46
8158365231When you sweat, water evaporates from the surface of your skin decreasing your body temperature as this process requires heat energy. Explain why we use water as a coolant rather than methane.The heat capacity of water is much higher than methane, meaning that it is much harder to change 1 degree of water than it is methane. Water is much more constant, and will not change as quickly as methane would in reaction to your skin47
8158368303Explain why saturated fatty acids are solid at room temperatureThey're solid at room temperature due to the single bonds that give them a straight structure48
8158371949monosaturated fatty acid49
8158416676Polar molecules arehydrophilic50
8158416678Nonpolar molecules arehydrophobic51
8158439319What is an example of a hydrogen bond?The attraction between a hydrogen of one water molecule and the oxygen of another water molecule52
8158457217How do water molecules bond?Through hydrogen bonding53
8158460528Amino Acid54
8158515967The components of a triglyceride are1 glycerol and 3 fatty acids55
8158524470Composed of carbon, hydrogen and oxygen, this macromolecules main function is to store and release energycarbohydrate56
8158584190Describe the different levels of organization of proteins1. Primary: Amino acids that are held together by peptide bonds. The genes determine sequence 2. Secondary: Held together by hydrogen bonds. Hydrophilic/phobic determines whether the shape will be alpha-helix or beta pleated sheet. Genes determine primary sequence, primary determines secondary, secondary determines tertiary, etc 3. Tertiary: All proteins reach up to this stage. Happens when secondary folds in on itself to create a 3d structure. Held together by hydrogen, hydrophobic, ionic, and covalent bonds 4. Quaternary: Multiple tertiary structures held together. Not all proteins reach this stage. Held together by same bonds as tertiary stage. Ex: hemoglobin57

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