click below
click below
Normal Size Small Size show me how
AnP Ch 2 part B
Chapter 2 part B
Term | Definition |
---|---|
Inorganic Compounds | No carbon. Water, Salts and many acids and bases |
Organic Compunds | Contain Carbon, Carbs, Fats, Proteins and Nucleic Acids |
Water | Accounts for 60%-80% of the volume of living cells. |
High Heat Capacity | Lot of energy to change to gas. Prevents sudden changes in temp. |
High heat of Vaporization | evaporation requires large amounts of heat. Useful cooling mechanism. |
Polar Solvent Properties | dissolves and dissociates iconic substances. More reactive in solutions. |
Reactivity | Necessary part of hydrolysis and dehydration synthesis reactions. |
Salts | are iconic compounds that dissociate into separate ions in water. |
Electrolytes | All ions are this because they can conduct electrical currents in solution. |
Acids | Are proton donors: they release hydrogen ion. |
Bases | Are proton acceptors: they pick up Hydrogen ions in solution. |
pH: Acid-base Concentration | pH scale is measurement of concentration of hydrogen ions in a solution. |
Acidic | Solutions have high hydrogen but low pH. |
Alkakine | solutions have low hydrogen but high pH |
Netralization | acids and bases are mixed together |
Buffers | resist abrupt and large swings in pH. |
Carbohydrates | include sugars and starches. Contain C,H and O |
Monosaccharides | Simple sugars containing 3-7 carbon atoms. |
Pentose Sugars | Ribose and Deoxribose |
Hexose Sugars | Glucose (blood Sugar) |
Disaccharides | Double Sugars, to large to pass through cell membrane, Sucrose , Maltose and Lactose. |
Polysaccharides | Polymers to Monosaccharides, Starch and Glycogen. Not very soluble. |
Lipids | Triglycerides or neutral fats, Phospholipids, Steroids, Eicosanoids. |
Triglycerides | called fats when solid and oils when liquid. Energy function, Insulation and Protection. |
Saturated fatty acids | All carbons are linked via single covalent bonds. Solid at room temp. Animal fats and butter |
Unsaturated fatty acids | Liquid at room temp. One or more carbons are linked via double bonds. Trans fats ans Omega-3 fatty acids |
Phospholipids | Modified Triglycerides. Head is polar attracted to water and tails are non-polar are repelled by water. Make up cell membrane. |
Steroids | Most important one is Cholesterol. Vitamin D and hormones and bile salts. Consist of 4 interlocking ring structures. |
Proteins | Comprise 20-30% of cell mass. Structural and chemical enzymes. Polymers of amino acids monomers held together by peptide bonds. Held together by 20 types of amino acids |
Protein Strucutre | Primary, Secondary, Tertiary and Quaternary. |
Primary | Linear sequence of amino acids |
Secondary | how primary amino acids interact with each other. |
Alpha | Helix coils resemble a spring |
Beta | pleated sheets resemble accordion ribbons |
Tertiary | How secondary structures interact |
Quaternary | How 2 or more different polypeptides interact with each other |
Fibrous (structural) Proteins | Strand like water insoluble and stable. Provide mechanical support ans tensile strength. EX: Keratin, Elastin and Collagen. |
Globular (functional) Proteins | Compact, spherical, water soluble and sensitive to environment changes. EX: Antibodies, Hormones and Enzymes. |
Denaturation | Globular proteins unfold and lose theie functional 3-D shape. Can be caused by decreased pH or increased temp. Irreversible. |
Enzymes | Globular proteins that act as biological catalysts. Lower the activation energy for chemical reaction. |
Characteristics of Enzymes | Most functional enzymes, referred ti as Holoenzymes, consist of 2 parts. Act on a very specific substrate. Names usually end in ASE. |
Nucleic acids | Composed of C,H,O,N and P. Are the largest molecules in the body. |
Nucleic acid polymers | are made up of monomers called Nucleotide |
DNA | Genetic blue print for the synthesis of all proteins. Double stranded Helical Molecule located in cell nucleus. |
Purines | A adeine, G guanine |
Pyrimidines | C cytosine, T thymine |
Base paring rules | A-T and C-G |
RNA | Single stranded linear molecule s active mostly outside nucleus. Contains ribose sugar. Thymine is replace with Uracil. |
ATP | Chemical energy released when released when glucose is broken down is captured in ATP. |