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Mastering Biology Chapter 5 B Questions and Answers 100% Solved
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Mastering Biology Chapter 5 B
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Mastering Biology Chapter 5 BFrom the molecular formula, what would indicate that a six-carbon sugar is a
disaccharide composed of two trioses and not a hexose? - answer In the disaccharide,
the molecular formula would be C6H10O5.
Which of the following polysaccharides contains a modified monosaccharide? - answer
Chitin
Disaccharides are formed by joining together two monosaccharides in condensation
reactions. For example, sucrose (table sugar) is composed of glucose and fructose.
The bond formed between these monomers is called __________. - answer a glycosidic
linkage
_________ are enzymes that help catalyze the hydrolysis of α-glycosidic bonds in
glycogen, whereas ________ are enzymes that help catalyze the hydrolysis of α-
glycosidic bonds in starch. - answer Phosphorylases; amylases
Monosaccharides differ from one another in __________. - answer whether they
contain an aldose or a ketose group
If a monosaccharide's carbonyl group is on an internal carbon, then the
monosaccharide is __________. - answer a ketose
Which of the following carbohydrates has a structural role? - answer Cellulose
Glycoproteins are an important component of cell-cell communication, including
recognition and signaling. The carbohydrate portion of a glycoprotein is usually a short,
branched oligosaccharide because they are diverse in geometry and composition. In the
experiment investigating cell-cell recognition between egg and sperm during fertilization,
what part of egg-surface glycoproteins was recognized by sperm? - answer
Carbohydrate portion
Starch and cellulose are both glucose polymers. Why can animals easily degrade starch
but not cellulose? - answer Animals have the enzymes to degrade α-1,4-glycosidic
bonds but not β-1,4-glycosidic bonds.
Carbohydrates have a variety of functions. Which polysaccharide helps fecal material
move through the intestinal tract, thus preventing constipation? - answer Cellulose
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