Q: Where do cells come from? Choices: - sexual reproduction - mutations - nuclear fission - preexisting cells A:
preexisting cells

Q: What are the gas giants mostly made of . Choices: - calcium and helium - nitrogen and helium - hydrogen and carbon - hydrogen and helium A:
hydrogen and helium

Q: Q: How are valuable metabolites recovered? Choices: - replication reaction - osmosis - metabolism - reabsorption A:
A: reabsorption

Question: Q: Osmotic pressure is important in biological systems because cell walls are what? Choices: - impassable - theonym membranes - variably membranes - semipermeable membranes A:
Answer: semipermeable membranes

*Question*
Q: What part of the cell is surrounded by a membrane and holds the genetic information for the cell? Choices: - cell wall - upper - lower - nucleus A:
**Answer**
nucleus

Q: Q: Magnetite crystals in lava typically point to what geographic location? Choices: - the equator - magnetic south pole - geographic north pole - magnetic north pole A:
A: magnetic north pole