AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

AP Biology Chapter 4 and 5 Flashcards

Terms : Hide Images
7341327918Significance of carbon to lifeCarbon can form complex, diverse, and large bio-molecules Its chemical structure allows it to form four bonds0
7341327919Molecules that make up lifeCarbon, hydrogen, sulfur, phosphorus, nitrogen, oxygen1
7341327920Functional GroupsDirectly affect molecular function2
7341327921Hydroxyl-OH or HO- Example - Ethanol Polar3
7341327922MethylCH3 Example - 5-Methyl Cytosine Nonpolar4
7341327923CarbonylCarbon 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
7341327924Carboxyl-COOH or HOOC- (Carbon single bonded with OH and double bonded with O) Example - Acetic Acid Very polar6
7341327925PhosphateP04 (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
7341327926Amine (Amino)-NH2 or -NH3+ (Acts as a base) Example - Glycine Very polar8
7341327927Sulhydryl-SH or HS- Example - Cysteine Nonpolar9
7341327928PolymerizationThe process of which two or more monomers synthesize into a polymer10
7341327929Dehydration 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
7341327930HydrolysisThe 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
7341327931ChitinA 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
7341327932StarchA polysaccharide that consists of Alpha 1,4 links bond the glucose monomers together (can be digested by humans) Found in plants, seeds14
7341327933CelluloseA 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
7341327934GlycogenA branched polysaccharide of many glucose monomers, found in the animals (liver and muscle cells). Used for energy storage. "Animal starch"16
7341327935Glycosidic LinkagesAlpha 1,4 (Oxygen bonded with hydrogens angled downwards) Beta 1,4 (Oxygen bonded with hydrogens angled upwards)17
7341327936GlucoseThe basic monomer unit for all carbohydrates (monosaccharide) Serves as the main source of energy Has an aldehyde (carbonyl) at C1 Hexose (C6H12O6)18
7341327937FructoseA monosaccharide similar to that of glucose Abundant in plants Has a ketone (carbonyl) at C2 Hexose (C6H12O6)19
7341327938GalactoseA monosaccharide similar to that of glucose (orientation of H and OH on C4 are interchanged)20
7341327939LactoseMilk sugar, a dissacharide Composed of galactose and glucose21
7341327940MaltoseBrewing (beer) sugar, rarely found in nature, a dissacharide Composed of two glucose monomers22
7341327941SucroseTable sugar, a dissacharide Composed of glucose and fructose23
7341327942StarchComposed of linked L (alpha)-Glucose24
7341327943CelluloseComposed of linked D (beta)-Glucose monomers25
7341327944Molecular 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
7341327945Carbohydrate 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
7341327946Ring Structure of Glucose28
7341327947Flattened GlucoseH C=O H-C-OH HO-C-H H-C-OH H-C-OH H-C-OH H29
7341327948DissaccharidesSucrose - Fructose and Glucose Maltose - Glucose and Glucose Lactose - Glucose and Galactose30
7341327949Why 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
7341327950Saturated 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
7341327951Unsaturated 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
7341327952SteriodsExample - Cholesterol, sex hormones Composed of 4 fused carbon rings Different steroids are due to different functional groups34
7341327953PhospholipidsMake 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
7341327954GlycerolA 3C (3 carbon) alcohol that forms the backbone of a lipid OH Removed when combined with fatty acid36
7341327955Fatty AcidLong hydrocarbon chain with a carboxyl group at the start (an H from the OH is removed when combined with glycerol)37
7341327956Ester LinksO-C=O bonds Occurs between the two oxygens38
7341327957Parts 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
7341327958Protein functions and examplesCatalysis (enzymes - amylase) Structure (collagen) Storage (ferratin) Transport (protein pumps) Hormones (insulin) Receptor Motor (muscles and motor proteins - myosin) Defense (antibodies)40
7341327959Primary Structure of ProteinsLinear chain of amino acids immediately when a polypeptide is formed41
7341327960Secondary 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
7341327961Tertiary 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
7341327962Quaternary Structure of ProteinsMultiple polypeptide (Tertiary Proteins) form a functional protein Collagen, or hemoglobin44
7341327963Peptide BondA covalent bond between an amino functional group and a carboxyl functional group NH2 loses a hydrogen, and -COOH loses OH45
7341327964Sickle 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
7341327965Denaturing 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
7341327966How 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
7341327967IsomerCompounds with the same formula but different molecular makeup (different geometry)49
7341327968EnantiomerIsomers that are mirror images of each other, and differ due to a central (asymmetrical) carbon L-isomer (left) D-isomer (right)50
7341327969Functional GroupChemical groups that affect molecular function by directly being involved in a chemical reaction51
7341327970MonomerSmall molecules that act as repeating units for larger molecules52
7341327971PolymerA large molecule made up of many monomer units53
7341327972HexoseA 6-Carbon sugar (ex. Glucose, fructose)54
7341327973PentoseA 5-Carbon sugar (ex. Ribose)55
7341327974NucleotideThe monomer unit of a polynucleotide (nucleic acids) Adenine, Guanine, Cytosine, and Thymine (DNA)/Uracil (RNA)56
7341327975Pyrimidine6-Member ring of carbon and nitrogen Cytosine, Thymine, and Uracil57
7341327976PurineA 6-member ring of carbon and nitrogen fused to a 5-member ring Larger than pyrimidines Adenine and guanine58
7341327977C:H:O Ratios in macromoleculesCarbohydrates - 1:2:1 Lipids - 1:2:(Barely any) Proteins and Nucleic Acids - No exact ratio59
7341327978Elements 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
7341327979Where 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
7341327980Element unique to proteinsSulfer62
7341327981RNA vs DNARibose vs Deoxyribose Uracil vs Thymine Single vs Double stranded63
7341327982Rules 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

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!