Q: Anemia, leukemia, hemophilia, and sickle-cell disease are examples of conditions that primarily affect what? Choices: - Lungs - brain - heart - blood A:
blood

Q: What substances in a car battery can be melted and recycled? Choices: - lead and steel - lead and sodium - steel and sodium - lead and plastic A:
lead and plastic

Q: Q: What monitors the level of carbon dioxide in the blood? Choices: - the lungs - the heart - the kidneys - the brain stem A:
A: the brain stem

Question: Q: What kind of bonds, where electrons are transferred rather than shared, are considered the ultimate in polarity? Choices: - covalent bonds - soluble bonds - magnetic bonds - ionic bonds A:
Answer: ionic bonds

*Question*
Q: What can be looked at to see a record of how horses evolved? Choices: - erosion records - carbon dating - pattern records - fossil records A:
**Answer**
fossil records

(Question)
Q: What substances digest the food in the vacuole of an ingestive protist? Choices: - carbohydrates - lipids - hormones - enzymes A:
(Answer)
enzymes