91Ó°ÊÓ

Sophorose, a carbohydrate found in certain types of beans, has the following Haworth structure:

a. Is sophorose a mono-, di-, or polysaccharide?

b. What are the monosaccharides in sophorose?

c. What is the glycosidic link in sophorose?

d. Is this the $\mathrm{Î\pm }$or $\mathrm{β}$isomer of sophorose?

e. Is sophorose a reducing sugar?

Melezitose, a carbohydrate secreted by insects, has the following Haworth structure:$(13.4,13.5,13.6)$

a. Is melezitose a mono-, di-, or trisaccharide?

b. What monosaccharides are present in melezitose?

c. Is melezitose a reducing sugar?

Raffinose, found in Australian manna and in cottonseed meal, has the following Haworth structure:

$(13.4,13.5,13.6)$

a. Is raffinose a mono-, di-, or trisaccharide?

b. What monosaccharides are present in raffinose?

c. Is raffinose a reducing sugar?

What is the difference between an aldose and a ketose?

Identify the chiral carbon if any in each of the following compounds

Identify the chiral carbons if any in each of the following compounds: 13.2

Identify each of the following pairs of Fischer projections as enantiomers or identical compounds: (13.2,13.3)

Identify each of the following pairs of Fischer projections as enantiomers or identical compounds: (13.2,13.3)

What are the differences in the Fischer projections of D-fructose and D-galactose? (13.3)

What are the differences in the Fischer projections of D-glucose and D-fructose? (13.3)