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WorksheetsChapter 7: Sugars
Total questions: 18
Worksheet time: 36mins
Which of the following is a ketose?
How many chiral carbons exist in this aldose?
2
4
5
6
A diastereomer:
differs at 1 chiral carbon
differs at 1 or more chiral carbons
differs at every chiral carbon
differs at the anomeric carbon
Identify whether this anomer is alpha (α) or beta (β)
Alpha (α)
Beta (β)
Sucrose has a __ - glycosidic bond, Lactose has a __ - glycosidic bond.
α
β
β
α
α
α
β
β
What type of monosaccharide derivative results from oxidation of the primary alcohol of an aldose?
deoxy-sugar
sugar alcohol
sugar acid
glycoside
Reduction of the aldehyde of a sugar yields:
uronic acids
alditols
glycosides
deoxy sugar
Reduction of an alcohol yields:
polysaccharides
amino sugars
deoxy sugars
aldohexoses
Substitution of an alcohol for an amine yields:
amino sugars
amino acids
glycosides
What is a "glycosidic" bond?
a bond derived from two thiol groups
a bond that joins anomeric carbons to other compounds
Which polysaccharide consists of linear β 1 -> 4 linked glucose?
Cellulose
Chitin
α - Amylose
Glycogen
What two sugars combine to form sucrose?
glucose and glucose
glucose and fructose
glucose and galactose
fructose and fructose
What two sugars combine to form lactose?
glucose and glucose
glucose and fructose
glucose and galactose
galactose and galactose
Is this sugar reducing or non-reducing? How do you know?
Reducing; there is a free -OH group on the anomeric carbon
Non-reducing; there is a free -OH group on the anomeric carbon
Reducing; there is a glycosidic bond with the anomeric carbon
Non-reducing; there is a glycosidic bond with the anomeric carbon
Amylose links glucose by what type of bond?
Beta (1,4)
Beta (1,6)
Alpha (1,4)
Alpha (1,6)
Amylopectin has the same glucose links as ______ but has _______ branches.
Cellulose; alpha (1,6)
Amylose; alpha (1,4)
Amylose; alpha (1,6)
Glycogen; alpha (1,4)
Amylopectin has alpha ____ glucose links with alpha _____ branches every 12-30 residues
1,6 ; 1,6
1,4 ; 1,4
1,6 ; 1,4
1,4 ; 1,6
What is a glycan?
Multiple polysaccharides linked together by peptide bonds
Multiple monosaccharides linked together by glucose bonds
Multiple polysaccharides linked together by glycosidic bonds
Multiple monosaccharides linked together by glycosidic bonds
