Organic Chemistry Chemistry of Carbon Molecules. Carbon 4 electrons in outer energy level. Needs to...
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Transcript of Organic Chemistry Chemistry of Carbon Molecules. Carbon 4 electrons in outer energy level. Needs to...
Organic Chemistry
Chemistry of Carbon Molecules
Carbon• 4 electrons in outer energy level.• Needs to form four covalent bonds to
become stable.• Can form single, double, or triple bonds.
– A double bond is a bond in which each atom shares two electrons.
• Can bond with other carbon atoms to form straight chains, branched chains or rings of various sizes.
Isomer
• Compounds with the same chemical formula but a different 3-D structure.– Example: glucose and fructose (both
C6H12O6)
Polymers
• Large biomolecules formed from many smaller molecules bonded together.– Example: Proteins
Carbohydrates
• Biomolecule composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio.
• Used by cells to provide energy.
Carbohydrates• Monosaccharide
– Simplest carbohydrate.– Simple sugar.– Examples: glucose and fructose
• Disaccharide– Formed from two monosaccharides– Example: Sucrose (table sugar) (formed from
glucose and fructose)
• Polysaccharides– Largest carbohydrates– Examples: Starch, Glycogen, and Cellulose
Lipids• Large biomolecules made mostly of
carbon and hydrogen with a small amount of oxygen.
• Used for energy storage, insulation, and protective covering.
• Insoluble in water because they are non-polar molecules.
• Examples:– Fats, oils, waxes, steroids.
Lipids• Formed from fatty acids.
– Long chain of carbon and hydrogen.
• Saturated fatty acid:– Each carbon in the chain is bonded to the
other carbon atoms by a single bond.
• Unsaturated fatty acid:– A double or a triple bond is present in the
chain.
Proteins• Large complex polymer composed of
carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
• Provide structure for tissues, contract muscle tissues, transport oxygen in the bloodstream, regulate reactions, and carry out cell metabolism.
• Enzyme:– Protein that changes the rate of a chemical
reaction.
Proteins• Proteins are common in a large variety of
sizes and 3-D shapes.• The shape depends on the properties of the
individual amino acids (ex. pH).
• Formed from amino acids.– 20 common amino acids.– Covalent bond between two amino acids is
called a peptide bond.
Nucleic Acids• Complex molecules that store information
in the form of a code.• Made of smaller units called nucleotides.
– Nucleotides are formed from carbon, hydrogen, oxygen, nitrogen, and phosphorous atoms arranged in three groups: a nitrogeneous base, a simple sugar, and a phosphate group
• Examples:– DNA (deoxyribonucleic acid)