Q: Ice ages, continental drift, and giant meteorites striking earth have caused what phenomenon? A:
OPTIONS:
- gravity
- waves
- depletion
- extinction
extinction

Q: What are unique about prokaryotic cells' organelles? A:
OPTIONS:
- no cell walls
- no epidermis
- only membrane - bound
- not membrane-bound

Answer: not membrane-bound

Question: Q: Systems are in thermal equilibrium when they have the same of what measurement? A:
OPTIONS:
- oxygen
- density
- mass
- temperature
Answer: temperature

input with options: Q: The components of what keep their own identity when they combine and can usually be easily separated? A:
OPTIONS:
- alloy
- solution
- compound
- mixture
output: mixture

Q: Q: Bacteria may divide several what an hour? A:

OPTIONS:
- cells
- hosts
- days
- times

A: times

Q: Within the microsporangium, the microspore mother cell divides by meiosis to give rise to four microspores, each of which will ultimately form this? A:
OPTIONS:
- zygote
- sperm cell
- ova
- pollen grain
pollen grain