Biological Molecules (Carbohydrates-2)

…………. Is a branched polysaccharide while …………….. Is an unbranched polysaccharide

• amylose, glycogen
• amylopectin, cellulose
• cellulose, amylose
• glycogen, amylopectin

which property of water minimises temperature changes in cells and organisms

• cohesion
• heat of vaporisation
• maximum density at 4Oc
• specific heat capacity

which type of reaction takes place when starch molecules are converted to reducing sugars

• condensation
• hydrolysis
• polymerisation
• synthesis

The diagram shows different types of bond found in polysaccharides. Which type/types are found in amylose

• 1 only

• 2 only

• 1 and 3 only

• 2 and 3 only

The diagram shows part of a molecule of a carbohydrate formed by glucose. What is the name of the molecule?

• amylose

• cellulose

• glycogen

• starch

which of the following reagent can be used to test for the persence of reducing sugar?

• Benedit Solution
• Schabs solution
• Benedict Solution
• Millons Reagent

which of the following describes the structure of amylopectin

• a branched chain with 1,2 and 1,4 glycosidic bonds
• a branched chain with 1,4 and 1,6 glycosidic bonds
• an unbranched chain with only 1,4 glycosidic bonds
• an unbranched chain with 1,4 and 1,6 glycosidic bonds

which molecule is found in glycogen

• A

• B

• C

• D

1,4 glycosidic bound is found in which molecules

• amylose and cellulose
• amylose but not cellulose
• cellulose but not amylose
• neither amylose nor cellulose

which statement describes how the molecular structure of starch is suited to its function?

• amylose has a branced structure and amylpectin is coiled to give a compact molecule for transport
• in the greakdown of amylose and amylopectin, many hydrolysis reactions release stored energy
• in the formation of amylose and amylopectin, many condensation reactions allows the release of stored energy
• the final amylose/amylopectin complex in insoluble and does not affect the osmotic properties of the cell