Glucose is an example of a monosaccharide. Monosaccharides join together to form disaccharides, oligosaccharides and polysaccharides. Oligosaccharides contain from three to ten monosaccharides. Starch is a polysaccharide composed of amylose and amylopectin. Digestion of starch begins in the mouth by an enzyme called amylase. This amylase can break only 1-4 glycosidic bonds. Only disaccharides and oligosaccharides are produced during this reaction. Explain why this amylase is able to break only 1-4 glycosidic bonds. (2) ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................
Exam No：wbi11-01-que-20240508. Year：2024 Question No：(b)(ii)
Answer:
An explanation that makes reference to the following points:
- (amylase) \{is specific / is complementary / only binds / only fits\} \{substrates / 1-4 glycosidic bonds\} (1)
- \{1-4 glycosidic bonds / substrate\} can \{fit into / bind with\} the active site (1)
- (amylase) \{is specific / is complementary / only binds / only fits\} \{substrates / 1-4 glycosidic bonds\} (1)
- \{1-4 glycosidic bonds / substrate\} can \{fit into / bind with\} the active site (1)
Knowledge points:
CH2 – Membranes, Proteins, DNA and Gene Expression
Solution:
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