Q: What is studied to understand gene expression patterns in cells? Choices: - dna - protein - mutations - rna A:
rna

Q: What two types of hormones regulate mammalian reproduction? Choices: - tropic and subtropic - pheromones and enzymes - endorphins and adrenaline - tropic and sex A:
tropic and sex

Q: Q: The pion can only be created by violating the conservation of what? Choices: - quantum physics - time-space - momentum - mass-energy A:
A: mass-energy

Question: Q: Generally, momentum implies a tendency to continue on courseto move in the same directionand is associated with great mass and speed. momentum, like energy, is important because it is what? Choices: - endless - sequences - invisible - conserved A:
Answer: conserved

*Question*
Q: What is the white solid that forms on corroded battery terminals? Choices: - ammonia sulfate - copper sulfate - straight sulfate - lead sulfate A:
**Answer**
lead sulfate

Q: The skull is a part of a vertebrate endoskeleton that encloses and protects what organ? Choices: - nervous system - lung - heart - brain A:
brain