Q: The presence of what in leaf cells makes most leaves appear green? Choices: - hydrogen - sodium - carbonate - chlorophyll A:
chlorophyll

Q: An increase in the body's cholesterol levels can lead to your arteries filling with what? Choices: - triglycerides - fat - marble - plaque A:
plaque

Q: Q: What is the name of a tough, fibrous membrane which protects the outer layer of bone? Choices: - cartilage - marrow - the epithelium - the periosteum A:
A: the periosteum

Question: Q: Elemental carbon is a black, dull-looking solid that conducts heat and this? Choices: - light - energy - vibration - electricity A:
Answer: electricity

*Question*
Q: In humans, what period lasts from the ninth week of development until birth? Choices: - third trimester - plasma period - development period - fetal period A:
**Answer**
fetal period

Q: Q: Zoonotic pathogens are transferred from what to what? Choices: - humans to animals - animals to animals - humans to humans - animals to humans A:
A: animals to humans