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AP Biology Chapter 4 and 5 Flashcards

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4887923405Significance of carbon to lifeCarbon can form complex, diverse, and large bio-molecules Its chemical structure allows it to form four bonds0
4887923406Molecules that make up lifeCarbon, hydrogen, sulfur, phosphorus, nitrogen, oxygen1
4887923407Functional GroupsDirectly affect molecular function2
4887923408Hydroxyl-OH or HO- Example - Ethanol Polar3
4887923409MethylCH3 Example - 5-Methyl Cytosine Nonpolar4
4887923410CarbonylCarbon double bonded with oxygen Example - Ketone (group is in the middle of the carbon skeleton/two "R" groups) - Acetone Aldehyde (group is at the end of a carbon skeleton/one "R" group) - Propanol Polarity depends on the geometry5
4887923411Carboxyl-COOH or HOOC- (Carbon single bonded with OH and double bonded with O) Example - Acetic Acid Very polar6
4887923412PhosphateP04 (Phosphate single bonded to two negatively charged oxygen, double bonded to one oxygen, and single bonded to an "R" group) Example - Glycerol Phosphate Very polar7
4887923413Amine (Amino)-NH2 or -NH3+ (Acts as a base) Example - Glycine Very polar8
4887923414Sulhydryl-SH or HS- Example - Cysteine Nonpolar9
4887923415PolymerizationThe process of which two or more monomers synthesize into a polymer10
4887923416Dehydration SynthesisThe process in which two or more monomers form a polymer and lose a water molecule Example - 10 molecules of water are released when 11 monomers are linked together (don't count the initial monomer)11
4887923417HydrolysisThe process in which a polymer is decomposed into simpler monomer units with the addition of a water molecule Example - 4 water molecules are required to hydrolyze a 5-monomer unit polymer12
4887923418ChitinA polysaccharide that is chemically similar to cellulose, but with the addition of nitrogen molecule(s) Makes the exoskeleton of fungi, insects or crustaceans (can be molted)13
4887923419StarchA polysaccharide that consists of Alpha 1,4 links bond the glucose monomers together (can be digested by humans) Found in plants, seeds14
4887923420CelluloseA polysaccharide that is chemically similar to starch, but uses Beta 1,4 links to bond glucose monomers together (cannot be digested by animals unless a specialized bacterium is present, as in cows) Found in plants, seeds, fungi15
4887923421GlycogenA branched polysaccharide of many glucose monomers, found in the animals (liver and muscle cells). Used for energy storage. "Animal starch"16
4887923422Glycosidic LinkagesAlpha 1,4 (Oxygen bonded with hydrogens angled downwards) Beta 1,4 (Oxygen bonded with hydrogens angled upwards)17
4887923423GlucoseThe basic monomer unit for all carbohydrates (monosaccharide) Serves as the main source of energy Has an aldehyde (carbonyl) at C1 Hexose (C6H12O6)18
4887923424FructoseA monosaccharide similar to that of glucose Abundant in plants Has a ketone (carbonyl) at C2 Hexose (C6H12O6)19
4887923425GalactoseA monosaccharide similar to that of glucose (orientation of H and OH on C4 are interchanged)20
4887923426LactoseMilk sugar, a dissacharide Composed of galactose and glucose21
4887923427MaltoseBrewing (beer) sugar, rarely found in nature, a dissacharide Composed of two glucose monomers22
4887923428SucroseTable sugar, a dissacharide Composed of glucose and fructose23
4887923429StarchComposed of linked L (alpha)-Glucose24
4887923430CelluloseComposed of linked D (beta)-Glucose monomers25
4887923431Molecular formula for a polymer with 4 glucose moleculesC24H42O21 Subtract 3 Oxygen and 6 Hydrogen since three H2O molecules are required to bond four glucose monomers together26
4887923432Carbohydrate LoadingEating large amounts of carbohydrates in preparation for an athletic event A strategy used for endurance athletes to saturate the liver and muscles with glycogen27
4887923433Ring Structure of Glucose28
4887923434Flattened GlucoseH C=O H-C-OH HO-C-H H-C-OH H-C-OH H-C-OH H29
4887923435DissaccharidesSucrose - Fructose and Glucose Maltose - Glucose and Glucose Lactose - Glucose and Galactose30
4887923436Why fat is better at storing energy than carbohydrateFats contain more energy per unit (2x as much as carbohydrates). Fats are better at storing energy because each glycerol unit can hold three long fatty acid units. Long hydrocarbon chains and their geometry allow dense packing31
4887923437Saturated FatsFatty acids are only comprised of single bonds that allow linear hydrocarbon chains to form Dense packing for high energy concentration Typically solids at room temperature32
4887923438Unsaturated FatsFatty acids are comprised of one or more double bond that produces a "kink" or a bend in the hydrocarbon chain Prevents optimal packing, and creates spaces Typically liquids at room temperature33
4887923439SteriodsExample - Cholesterol, sex hormones Composed of 4 fused carbon rings Different steroids are due to different functional groups34
4887923440PhospholipidsMake up the plasma membrane Phosphate head (hydrophilic, polar) Fatty acid tail (hydrophobic, nonpolar) Heads attracted to H2O, which is why there is water in the intracellular and extracellular matrix Self assembles into aggregates35
4887923441GlycerolA 3C (3 carbon) alcohol that forms the backbone of a lipid OH Removed when combined with fatty acid36
4887923442Fatty AcidLong hydrocarbon chain with a carboxyl group at the start (an H from the OH is removed when combined with glycerol)37
4887923443Ester LinksO-C=O bonds Occurs between the two oxygens38
4887923444Parts of an amino acidCentral Carbon Amino group to the left and carboxylic group to the right Hydrogen at the top "R" group at the bottom (determines polarity)39
4887923445Protein functions and examplesCatalysis (enzymes - amylase) Structure (collagen) Storage (ferratin) Transport (protein pumps) Hormones (insulin) Receptor Motor (muscles and motor proteins - myosin) Defense (antibodies)40
4887923446Primary Structure of ProteinsLinear chain of amino acids immediately when a polypeptide is formed41
4887923447Secondary Structure of ProteinsForms immediately after the primary structure Shapes due to hydrogen bonds (more bonds, more stability) and the placement of amino acids from the primary structure Alpha Helixes and Beta-Pleated sheets42
4887923448Tertiary Structure of ProteinsInteractions between two (or more) R-Groups or with the peptide backbone Hydrogen bonds, hydrophobic interactions, Van der Waals interactions, covalent disulfide bonds, ionic bonds Many proteins are complete in the tertiary structure43
4887923449Quaternary Structure of ProteinsMultiple polypeptide (Tertiary Proteins) form a functional protein Collagen, or hemoglobin44
4887923450Peptide BondA covalent bond between an amino functional group and a carboxyl functional group NH2 loses a hydrogen, and -COOH loses OH45
4887923451Sickle Cell AnemiaIn normal hemoglobin, the 6th amino acid is Glutamic Acid (polar) Sickle Cell Anemia replaces Glutamic Acid with Valine (non-polar) Mutated hemoglobin crystallize into sickle (half moon) shaped cells Clogs small vessels and cannot carry oxygen as well46
4887923452Denaturing a proteinTransfer of the protein from an aqueous solution to a nonpolar solvent Chemical exposure Excessive heat Changes the primary structure of a protein by breaking the intermolecular bonds that holds its shape47
4887923453How proteins foldA chaperone protein (Chaperonins) Polypeptide enters one end of the chaperonin The chaperonin closes, and the cylindrical shape of the chaperonin changes (in a hydrophilic enviornment) The chaperonin opens up and a correctly folded protein exits48
4887923454IsomerCompounds with the same formula but different molecular makeup (different geometry)49
4887923455EnantiomerIsomers that are mirror images of each other, and differ due to a central (asymmetrical) carbon L-isomer (left) D-isomer (right)50
4887923456Functional GroupChemical groups that affect molecular function by directly being involved in a chemical reaction51
4887923457MonomerSmall molecules that act as repeating units for larger molecules52
4887923458PolymerA large molecule made up of many monomer units53
4887923459HexoseA 6-Carbon sugar (ex. Glucose, fructose)54
4887923460PentoseA 5-Carbon sugar (ex. Ribose)55
4887923461NucleotideThe monomer unit of a polynucleotide (nucleic acids) Adenine, Guanine, Cytosine, and Thymine (DNA)/Uracil (RNA)56
4887923462Pyrimidine6-Member ring of carbon and nitrogen Cytosine, Thymine, and Uracil57
4887923463PurineA 6-member ring of carbon and nitrogen fused to a 5-member ring Larger than pyrimidines Adenine and guanine58
4887923464C:H:O Ratios in macromoleculesCarbohydrates - 1:2:1 Lipids - 1:2:(Barely any) Proteins and Nucleic Acids - No exact ratio59
4887923465Elements associated with macromoleculesCarbohydrates - Hydrogen, oxygen, carbon Lipids - Phosphorus (only in phospholipids, but NOT in fats and steriods), Hydrogen, Oxygen, Carbon Proteins - Carbon, Hydrogen, Oxygen, Nitrogen, Sulfer Nucleic Acid - Phosphorus, Nitrogen, Carbon, Oxygen, Hydrogen60
4887923466Where certain functional groups are found-OH (Many proteins and lipids) -CH2 (Many proteins and lipids) -COOH (All proteins and many lipids) -NH2 (All proteins) -SH (Many proteins) -PO4 (Many lipids)61
4887923467Element unique to proteinsSulfer62
4887923468RNA vs DNARibose vs Deoxyribose Uracil vs Thymine Single vs Double stranded63
4887923469Rules to identify macromoleculesCarbohydrates - 1:2:1 ratio of ONLY Carbon, Hydrogen, and Oxygen Lipids - Made up of a glycerol backbone and fatty acids, 1:2 Carbon to Hydrogen ratio Proteins - Contains NH2 or NH3+, contains a -COOH functional group, and peptide bonds Nucleid Acids - Nucleotides, 5 Carbon Sugar, and a phosphate group64

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