Fact 1: Some viruses have an envelope of phospholipids and proteins. Fact 2: Phospholipases are the enzymes that degrade phospholipids . Given the two facts above, what might have an envelope of proteins and enzymes?
OPTIONS:
- fur seals
- some viruses
- Most plants
- a fish
- animal transport
- animals
- chickens
- it needs them

Answer: some viruses

Fact 1: Creating wood-free paper does not require cutting down trees. Fact 2: Most uncoated freesheet paper is entirely free of mechanical wood pulp. Given the two facts above, what type of paper does not require cutting down trees?
OPTIONS:
- windpower operated machines
- deoxyribonucleic acid
- uncoated freesheet
- slow and inefficient
- objects that have mass
- A solid geometric shape
- barrel-shaped
- It remains dormant

Answer: uncoated freesheet

Fact 1: Plants use cellulose for their cell walls. Fact 2: Basically, fiber is cellulose . Given the two facts above, what is made from cell walls?
OPTIONS:
- water
- blood
- cells
- sugar
- a path
- fiber
- moss
- Carbon

Answer:
fiber