Terms in this set (66)
What is another name for carbohydrates?
What is the smallest carbohydrate?
How would you classify a monosaccharide with three carbons?
What is an aldose with seven carbons named?
A chiral carbon is a carbon surrounded by four different groups (t or f)
Except for the ketotriose, monosaccharides contain at least one chiral carbon. (t or f)
Glyceraldehyde has how many chiral carbons?
The bonds from a carbon to a chiral carbon point at a downward angle. (t or f)
The bonds from a non carbon to a chiral carbon point at a upward angle. (t or f)
An aldopentose contains three chiral carbons (y or n)
Fischer projections would be produced if a chiral carbon and its four bonded groups were placed in an orientation between a surface and a light source. (t or f)
Fischer Projections are used to retain the three dimensional information on a flat surface for _____?
An example of ketose of?
An aldehyde or a ketone will react with an alcohol to form a hemiacetal (t or f)
What is one of the major dietary carbohydrates?
The stereoisomer of glucose that is made in photosynthesis is called?
To differentiate two individual monosaccharides of an enantiomer pair what two letters are used?
-D and -L
The cyclic form is lower energy and therefore the predominant form. (t or f)
A cyclic monosaccharides with five-member rings are known as
A cyclic monosaccharides with six-member rings are known as
Each time a open-chain converts to cyclic form how enantiomers will be formed
one of two
A chiral hemiacetal carbon is not a carbon that contains an OH and on OR (t or f)
A ring-carbon to the right-hand side of the ring- oxygen is a?
How many enantiomers can be formed during the cyclization process
How many classes of monosaccharide has been replaced by an amino group
In an _____ sugar, a hydroxyl group of a monosaccharide has been replaced by an amino group
The effectiveness of D- Glucosamine has been established (t or f)
Amino sugar can NOT undergo mutarotation (t or f)
Benedict's Reagent is used as a test for aldoses (t or f)
Alcohol sugars are used in the food and beverage industry as?
all of the above
Deoxy sugars are derived when a hydroxyl group (OH) in a monosaccharide is replaced by a ________ atom
D-2-deoxyglucose is currently being used in the development of ______ strategies.
Which of the following is not a major group that carbohydrates can be classified as?
Which of the following is not a monosaccharide derivative?
Like monosaccharides, deoxy sugars undergo _______
D-2-deoxyribofuranose is one of the residues that make ______.
What is found in malt, that is purified from germinated grains
If the open-chain form of an oligosaccharide contains an aldehyde group, it will give a positive _______ test
Glycosidic bonds are described using____
both (Alpha and Beta)
The mutarotation does not change the a/b designation of a glycosidic bond (t or f)
The covalent bonding pattern linking the anomeric carbon of one residue to an ______
Carbon bonded to 2 OR groups
Cellobiose is a disaccharide (t or f)
The anomeric carbon in the _____ most residue undergoes mutarotation
Glucose is a nutrient that is found in milk and dairy food made from milk. (t or f)
How does one have congenital lactose intolerance?
born with it
What is sucrose referred to as?
Glycosidic bonding involves three anomeric carbons (t or f)
Is the highlighted glycosidic bonds using the alpha or beta designation
Why is sucrose the only disaccharide that will give a negative Benedict's test
because it is not classified as a reducing sugar
What are two negative side effects of overconsumption of sucrose
tooth decay and obesity
Disaccharide is considered reducing a sugar (t or f)
What must be present for a molecule to be a trisaccharide
3 monosaccharide residues
Raffinose and Stachyose are found together in many foods, list three and explain their negative side affects.
we cannot fully digest them. because of this, gases can form
Does "dietary cellulose" ease defecation? (y or n)
Carbohydrates can be classified into _____ major groups based on their sizes?
Homopolysaccharides are composed of only ____ type of residue?
______ is found in the walls of plants and algae
Major Industrial Industry's use cellulose for the production of paper? (t or f)
An amylopectin molecule usually contains around _____ to _____ D- glucose residues
2,000 to 20,000
Because of branching, amylopectin molecules have a large number of endpoints. (t or f)
In humans, glycogen is made and stored primarily in ____ and ____ cells
liver and muscle
Contain more than one type of residue
_____ contain only one type of residue
Plants store excess glucose as starch; animals and fungi store excess glucose as Glycogen (t or f)
Starch contains about ____% amylopectin and ___% amylose
70-80 percent; 20-30 percent
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