Q: Q: How do mammals generate heat? A: | OPTIONS:
- running around fast
- eating spicy foods
- maintaning low metabolism
- maintaining high metabolism
A: maintaining high metabolism

Q: Q: Quantities have two parts: the number (how many) and what else? A: | OPTIONS:
- the motion
- the member
- the credit
- he unit
A: he unit

Q: Q: All cells undergo what during a lifetime, but when this process is out of control, cancer results? A: | OPTIONS:
- cell transition
- cell death
- cell mutation
- cell division
A: cell division

Q: Q: What term describes the long tube that connects the mouth to the anus? A: | OPTIONS:
- metabolism tract
- esophagus tract
- lungs tract
- gastrointestinal tract
A: gastrointestinal tract