Organic Compounds Flashcards
iosmers
org. compounds w/ same mol. formula, but different structures which cause them to have different prop.
types of isomers
structural isomers, cis-trans isomers. enantiomers
structural isomers
differ in arrangement of atoms
cis-trans isomers
differ in spatial arrangement around double bonds (not flexible like single bonds)
enantiomers
molecules that are mirror images of each other, (left handed L- and right handed D-)
L- vs D- fact
mirror images may not be equally effective, L- dopa is useful for treatment of Parkinson’s but D- dopa is not biologically active
Q: amino acids in cells are left or right handed?
all amino acids are left handed.
org. compounds
all living organisms have them, contain carbon
four classes of organic compounds
carbohydrates, lipids, proteins and nucleic acids
Carbohydrates
body uses as fuel and building materials
carbs constituent elements
C, H, O
ratio of H to O in all carbs
2:1
carbs == QUICK energy
1 gram of any carb == 4 calories when burned with a calorimeter
3 classes of carbohydrates
monosaccharides, disaccharides, and polysaccharides
monosaccharides
Chemical formula: C6H12O6, ex: glucose, galactose, and fructose, all isomers
conventional numbering of C in rings
numbering begins to the right of O
disaccharide
chemical formula: C12H22O11, two monosacc. together with a release of 1 H20
dehydration synthesis or condensation
process of joining two molecules by releasing a H20
glucose + glucose
maltose + water
glucose + galactose
lactose + water
glucose + fructose
sucrose + water
hydrolysis
break down of a compound by adding water, reverse of condensation synthesis
Q: sucrose + water –> glucose + fructose is an example of what?
hydrolysis
monosaccharide + monosaccharide –>
disaccharide + h20