Q: Early in the development of a human fetus, the skeleton is made entirely of what? A:

OPTIONS:
- bones
- anterior
- membrane
- cartilage

Answer: cartilage

Q: Inorganic chemical compounds can be broadly classified into two groups: ionic compounds and which other group? A:

OPTIONS:
- cellular compounds
- atomic compounds
- electromagnetic compounds
- molecular compounds

Answer: molecular compounds

Q: For the nervous system to function, neurons must be able to send and receive what? A:

OPTIONS:
- pulses
- proteins
- information
- signals

Answer: signals

Q: What celestial body in the solar system makes up most of its total mass? A:

OPTIONS:
- Jupiter
- earth
- Andromeda
- sun

Answer:
sun