14 Earth - Resources 2

A chain of repeating units (called monomers)

• monomer

• dimer

• replicate

• polymer

Proteins are composed of what smaller subunits?

• amino acids
• nucleic acids
• fatty acids
• nucleotides

Starch is composed of what monomers?

• sucrose
• glucose
• nucleic acids
• glycogen

Why do you think people use plastic for their products ?

• Because it's strong
• Because its very cheap and it's easy to make
• Because it's expensive
• Because it's rare and it's good for the enviorment

What would the polymer formed from ethene monomers be called?

• polyethene

• poly(ethene)

• poly(propene)

• polyene

Why does the disposal of polymers in landfill sites cause problems?

• Polymers produce toxic fumes

• Polymers dissolve into the water supply

• Polymers are usually non-biodegradable

1. When we use less of something?

• Reduce

• Reuse

• Recycle

2. When we use something more than once.

• Reuse

• Reduce

• Recycle

3. Turning an used material into a NEW material.

• Reuse

• Reduce

• Recycle

4. Luis sells his dinosaurs at school. This act is:

• Reusing

• Recycling