Q: What is the sum of the masses of the atoms in a molecule? Choices: - compound mass - mass effect - atomic energy - molecular mass A:
molecular mass

Q: When lactose is absent, a repressor protein binds to what? Choices: - differential - network - worker - operator A:
operator

Q: Q: How do amphibians reproduce? Choices: - asexually - biologically - they don't - sexually A:
A: sexually

Question: Q: Amphibians may attract mates with what? Choices: - only calls - only scents - neither - calls or scents A:
Answer: calls or scents

*Question*
Q: The subducting oceanic plate does what as it reenters the mantle? Choices: - evaporates - disappers - freezes - melts A:
**Answer**
melts

Q: How do autotrophs get food? Choices: - From Water - Soak up from host cell - From Plant matter - make their own A:
make their own