B1.1 1.2

Which molecule is depicted in the diagram?

• A saturated fatty acid

• An unsaturated fatty acid

• A trans fat

• A vegetable oil

What type of fat is typically found in animal products?

• Trans fat

• Saturated fat

• Polyunsaturated fat

• Monounsaturated fat

Which of the following is a characteristic of unsaturated fatty acids?

• They are solid at room temperature

• They are derived from animal sources

• They contain one or more double bonds

• They increase LDL cholesterol levels

What is the primary source of omega-3 fatty acids?

• Processed snacks

• Dairy products

• Fish and seafood

• Red meat

The diagram shows two polysaccharides, formed from condensation of many glucose molecules.

What are the names of X and Y?

• X glycogen;

  Y amylose

• X amylopectin;

  Y amylase

• X amylase;

  Y glycogen

• X amylose;

  Y amylopectin

Which type of carbohydrate is primarily used for energy storage in animals?

• Starch

• Glycogen

• Cellulose

• Chitin

A polymer of alpha-D-glucose found in plants has mostly 1,4 linkages and some 1,6 linkages. Which molecule fits this description?

• Glycogen

• Cellulose

• Amylose

• Amylopectin

What type of molecule is shown in this diagram?

• Trans saturated fatty acid

• Cis unsaturated fatty acid

• Cis saturated fatty acid

• Trans unsaturated fatty acid

Which organic molecules may contain the element sulphur?

• Proteins

• Carbohydrates

• Phospholipids

• Nucleic acids

Which molecule represents a lipid?

• A

• B

• C

• D