Indietro
Problema 2
What is the relationship between photosynthesis and respiration?
Problema 5
What functional groups are found in all monosaccharides?
Problema 7
What are the functional groups and number of carbons in a ketopentose?
Problema 9a
Classify each of the following monosaccharides as an aldopentose, ketopentose, aldohexose, or ketohexose:
a. Psicose is present in low amounts in foods.
Problema 13a
Draw the Fischer projection for each of the following wedge–dash structures:
a.
Problema 14a
Draw the Fischer projection for each of the following wedge–dash structures:
a.
Problema 15b
Indicate whether each pair of Fischer projections represents enantiomers or identical structures.
a.
Problema 16b
Indicate whether each pair of Fischer projections represents enantiomers or identical structures.
b.
Problema 17a
Identify each of the following as D or L:
a.
Problema 21a
Identify each of the following as the D or L enantiomer:
a.
Problema 23a,b
Draw the Fischer projection for the other enantiomer of a to b in problem 13.21.
a.
b.
Problema 23c,d
Draw the Fischer projection for the other enantiomer of c to d in problem 13.21.
c.
d.
Problema 25
Draw the Fischer projections for D-glucose and L-glucose.
Problema 27
An infant with galactosemia can utilize D-glucose in milk but not d-galactose. How does the Fischer projection of D-galactose differ from that of D-glucose?
Problema 28
D-Fructose is the sweetest monosaccharide. How does the Fischer projection of D-fructose differ from that of D-glucose?
Problema 29b
Identify the monosaccharide that fits each of the following descriptions:
a. is also called blood sugar
Problema 30a
Identify a monosaccharide that fits each of the following descriptions:
a. found in high blood levels in diabetes
Problema 31
What are the kind and number of atoms in the ring portion of the Haworth structure of glucose?
Problema 33
Draw the Haworth structures for α- and ß-D-glucose.
Problema 35a
Identify each of the following as the α or ß isomer:
a.
Problema 37
Draw the Fischer projection for the oxidation and the reduction products of D-xylose. What are the names of the sugar acid and the sugar alcohol produced?
Problema 38
Draw the Fischer projection for the oxidation and the reduction products of D-mannose. What are the names of the sugar acid and the sugar alcohol produced?
Problema 39
Draw the Fischer projection for the oxidation and the reduction products of D-arabinose. What are the names of the sugar acid and the sugar alcohol produced?
Problema 41a
For each of the following, give the monosaccharide units produced by hydrolysis, the type of glycosidic bond, and the name of the disaccharide, including α or β:
a.
Problema 43
Indicate whether each disaccharide in Problem 13.41 is a reducing sugar or not.
a.
b.
Problema 45b
Identify the disaccharide that fits each of the following descriptions:
a. ordinary table sugar
Problema 47a
Describe the similarities and differences in the following:
a. amylose and amylopectin
Problema 48b
Describe the similarities and differences in the following:
a. amylose and cellulose
Problema 49a
Give the name of one or more polysaccharides that matches each of the following descriptions:
a. not digestible by humans
Problema 49b
Give the name of one or more polysaccharides that matches each of the following descriptions:
c. contains only α(1→4)-glycosidic bonds
