Q: As the temperature of water decreases what happens to the speed of the water molecules? A:
OPTIONS:
- move faster
- evaporate
- begin to boil
- slow down

Answer: slow down

Q: What begins when a neuron receives a chemical stimulus? A:
OPTIONS:
- a induce impulse
- a metabolism impulse
- nerve reaction
- a nerve impulse

Answer: a nerve impulse

Q: Viruses were assumed to exist before they were first seen with an electron microscope in which decade? A:
OPTIONS:
- 1960's
- 1890's
- 1940's
- 1930 ' s

Answer:
1930 ' s