1st Exam Flashcards
The ff statements are true about biomolecule EXCEPT
a. covalent bonds exist between 2 atoms
b. Non-covalent interaction between 2 molecules (except ionic)
c. van der Waals repulsion and attraction exist in all
molecules and are significant only at close range
d. van der Waals repulsion and attraction, and hydrogen
bonds involve fulll charges; ionic interactions involve partial
charges.
D. partia; full
[Describe]
same molecular formula, different structure
Isomerism
butene and 2 methylpropene are
a. structural isomers
b. skeletal isomers
c. positional
d. functional
e. both a and b.
E
methanol and dimethyl ether are
a. structural isomers
b. skeletal isomers
c. functional
d. both a and b
e. both a and c
E
[Identify]
the hydrocarbon chain may be arranged in different ways,possess the same functional group, and belong to the same
homologous series
Skeletal Isomer
[Identify]
compounds with the same structural ‘backbone’ but different positions of substituents or functional groups. OR same functional group, different position thus different backbone
Positional Isomer
[Identify]
same molecular formula but the atoms are arranged so as to give different functional groups, thus belonging to different homologous series.
Functional
[Identify]
Two functional isomers that are rapidly interchanging
Tautomers
[Identify]
Isomers that are oriented differently in space
Stereoisomers
propane-1-ol and propane-2-ol are
a. functional isomers
b. positional isomers
c. skeletal isomers
d. tautomers
B
Amphiphilic compounds have _____ head and _____tail
hydrophilic;hydrophobic
What is the most practical and useful arrangement of amphiphilic compounds
bilayer
What are the building blocks of carbohydrates?
Monosaccharides
What is the basis in classifying aldoses and ketoses?
Reactive groups
What is the basis in classifying trioses, tetroses, pentoses?
Number of carbon atoms