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Test 3-A
for Test 3
25
Chemistry
Undergraduate 1
11/13/2008

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Cards

Term
What is the general formula for a carbohydrate?
Definition
(CH2O)n or C-2 H-2n O-n
Term
What is the definition of an alsose?
Definition
A monosaccharide containing an aldehyde group.
Term
What is C-5 H-10 O-5?
Definition
Pentose
Term
What is C-3 H-6 O-3?
Definition
Triose
Term
How is amylose made?
Definition
Unbranched chains,
alpha D-Glucose,
alpha 1,4 glycosidic bonds
Term
Describe Amylopectin.
Definition
Branched chains, alpha 1,4 glycosidic bonds at bronch points, New chains start by alpha 1.6 glycosidic bonds
Term
Describe glycogen.
Definition
Branched every 10-12 units,
alpha 1,4 and alpha 1,6 glycosidic bonds
short term energy reserve
animal starch
Term
Describe Cellulose.
Definition
Linear polysaccharide, Beta D glucose units joined by beta 1.4 glycosidic bonds
2,200 glucose units per molecule
insoluble in water
Term
What is amylose made from?
Definition
alpha D glucose
Term
What is linkage in Amylose?
Definition
Linkage is alpha 1,4 glycosidic bonds
Term
Is Amylose a reducing sugar?
Definition
NO
Term
What type of linkage is in Amylopectin?
Definition
Alpha 1,4 and alpha 1,6 glycosidic bonds
Term
What is amylopectin made from?
Definition
Alpha d-Glucose
Term
Is amylopectin a reducing sugar?
Definition
NO
Term
What are the linkages in Glycogen?
Definition
Linkage is alpha 1,4 and alpha 1,6 glycosidic bonds
Term
Is glycogen a reducing sugar?
Definition
NO
Term
What is glycogen made from?
Definition
alpha D-glucose
Term
What is cellulose made from?
Definition
Beta D-Glucose
Term
Is cellulose a reducing sugar?
Definition
NO
Term
What linkage is in cellulose?
Definition
Linkage is bets 1,4 glycosidic bonds
Term
What is the difference between furan and pyran?
Definition
Furan is a 5 membered ring
Pyran is a 6 membered ring
Term
What is a reducing sugar?
Definition
Carbohydrates that are oxidized to aldonic acids are reducing sugars
Term
What do aldyhydes reduce to?
Definition
Carboxylic acids
Term
When can a ketose be a reducing sugar?
Definition
When there is a ketone on Carbon2
Alcohol on Carbon 1
Term
What is the definition of Uronic Acid?
Definition
Enzyme catalyzed oxidation of primary alcohol at c-6 of Hexonse yields Uronic acid
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