*Question*
Q: The vagina connects to which internal organ? Choices: - artery - valves - ovaries - uterus A:
**Answer**
uterus

*Question*
Q: What is unique and found in all living things because it can form up to four covalent bonds between atoms or molecules? Choices: - hydrogen - oxygen - potassium - carbon A:
**Answer**
carbon

*Question*
Q: What are groups of atoms that behave as a single unit called? Choices: - protons - particles - ions - molecules A:
**Answer**
molecules

*Question*
Q: Prostaglandins also help regulate the aggregation of platelets, one step in the formation of what? Choices: - bloats - acne - cysts - blood clots A:
**Answer**
blood clots