ClE 9700 - Topic 2.2 - Past Paper MCQS

The structure of cellulose is held together by which type of bond? 1 ionic bonds 2 glycosidic bonds 3 hydrogen bonds

• A. 1, 2 and 3
• B. 1 and 2 only
• C. 2 and 3 only
• D. 1 and 3 only

Which bonds are found in glycogen?

• A
• B
• C
• D

Where are the double bonds located in unsaturated lipid molecules?

• A. Within fatty acids chains and within glycerol molecules
• B. Between glycerol molecules and fatty acids chains
• C. Within glycerol molecules only
• D. Within fatty acid chains only

Which of the molecules below is a-glucose?

• A
• B
• C
• D

A biological molecule is shown in the image below. Which of the following could be the molecule in the image? 1 amylose 2 amylopectin 3 cellulose 4 glycogen

• A. 1, 2 and 4
• B. 1 and 2 only
• C. 1 and 3 only
• D. 2 and 4 only

The diagrams below show a number of biological molecules. Which of the molecules above contains a glycosidic bond?

• A. 1 and 3 only
• B. 1,2 and 4
• C. 1 and 2 only
• D. 1 only

Which of the following features distinguishes starch from glycogen?

• A. Starch contains 1,6-glycosidic bonds
• B. Starch contains a-glucose and not -glucose
• C. Starch is a polysaccharide
• D. Starch has an unbranched component

Which molecule in the image below contains ester bonds?

• A
• B
• C
• D

Which of the following types of bond is responsible for joining smaller molecules together to form biological polymers?

• A. Covalent
• B. Hydrogen
• C. Hydrophobic interactions
• D. lonic

Which of the following statements about triglycerides is not correct?

• A. They play a vital role in energy storage within an organism
• B. They are hydrophobic
• C. Only triglycerides with unsaturated fatty acid chains contain double bonds
• D. They are made up of three fatty acids combined with glycerol