Question: Answer the following question given this paragraph: Compounds form when atoms of different elements combine. This process is a chemical reaction. Q: In which type of reaction are compounds formed? A:
OPTIONS:
- gaseous reaction
- acid reaction
- balanced reaction
- chemical reaction
Answer: chemical reaction

Question: Answer the following question given this paragraph: Hydrolase A hydrolase splits a molecule into two fragments by using water. The catalyzed reaction is referred to as a hydrolysis. Q: What does a hydrolase use to split molecules? A:
OPTIONS:
- air
- gas
- momentum
- water
Answer: water

Question: Answer the following question given this paragraph: Q: Because action potentials are so brief, a neuron can produce hundreds per what? A:
OPTIONS:
- day
- minute
- lifetime
- second
Answer:
second