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what is true when there is a single substituent on cyclohexane
the substituent will prefer to be equitorial
for cyclohexane, which best explains why the twisted boat and the boat differ in stability?
1,4-dipole hydrogen interaction
what is false, regarding fatty acids?
unsaturated fats stimulate cholesterol synthesis in the liver, resulting in an increase in blood cholesterol levels
according to the text, which of the following is NOT part of the "big six" recyclable polymers?
what describes the relationship between these two sugars?
in deoxyribose the oxygen lost is from the hydroxyl on C-2 of ribose
what products are produced when a carboxylic acid reacts with an alcohol, in the presence of sulfuric acid?
an ester + water
what is true about the spacial distribution of the hydroxyl groups of alpha-D-glucopyranose?
the hydroxyl on C-1 is equitorial, those on C-2,C-3, and C-4 are axial
a sample consists of 1 mole of the (+) enantiomer and 3 moles of the (-) enantiomer. what is the optical purity?
which carbohydrate derivative forms a gel-like matrix in joints and the vitreous humor of the eye?
the reaction of which combination of reactants result in the formation of a hemiacetal?
aldehyde and alcohol
what is the structure of cellulose?
unbranched skeleton of glucose molecules joined by 1-->4-beta-glycoside linkages
what determines the blood type in humans?
three or four monosaccharides attached to a membrane protein on the surface of red blood cells
what is the correct order of ease of hydrolysis? (most difficult to hydrolyze listed first)
urea, methyl acetate, acetic anhydride, phosgene
what is the correct order for ease of hydrolysis? (most difficult to hydrolyze listed first)
amides, esters, anhydrides
in order to distinguish the R and S forms of a molecule, an enzyme must have binding sites for _______ groups on the stereocenter
what is the relationship between the number of stereocenters in a monosaccharaide in its open-chain and ring structures?
the open-chain form contains one less stereocenter than the ring does
what two sugars should be eliminated from ones diet if they have galactosemia?
lactose and galactose
what correctly describes the relationship between the dextro/levo system?
all levarotatory compounds rotate plane-polarized light counterclockwise
as soap removes grease from a material, what occurs?
the grease is enclosed within the body of a micelle
when wine is exposed to air, it starts to sour. Which compound is responsible for this sour taste?
the configuration at which carbon of an aldohexose determines if the pentose has D or L configuration?
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