WOC Outcome 5 & 6

When a protein is exposed to too high a temperature, it becomes?

• solidified
• cooked
• frozen
• denatured

The difference between a protein and a polyamide is?

• Proteins are made up of sugar molecules
• Polyamides are synthetic molecules made up of diacids and diamines

• Polyamides are made from amino acids.

• Proteins are biological molecules with monomers that contain two different functional groups

When a protein becomes denatured it?

• becomes more stable
• loses its three-dimensional structure
• loses some effectiveness.

• increases its functionality

Essential amino acids are those that?

• are not necessary for human health
• must be obtained through diet
• are produced by the body
• are only found in meat

another name for propane that contains a hydroxyl group on carbons 1,2 and 3, is?

• methanol
• glycerol
• ethanol
• butanol

What property of soap makes it efficient at cleaning?

• It has a hydrophobic head

• It has a hydrophilic head

• It has a hydrophilic tail

• It has a hydrophobic tail

The fatty acid CH₃CH₂CHCHCH₂COOH, is esterified with glycerol to produce a new substance, will it be an oil or a fat?

• fat
• oil

Polyesters contain only which molecules in their backbone?

• Carbon

• Nitrogen

• Hydrogen

• Oxygen

The repeating unit of a polymer is what?

• monomer

• The smallest possible section of the chain that can be repeated to give the structure of the polymer.

• The functional groups of the polymer.

The polymerisation of these two molecules produces what? H₂N(CH₂)₆NH₂ + HOOC(CH₂)₄COOH

• polyester

• polypropylene
• polystyrene
• nylon