Q: At the earth's surface, the air pressure exerted on you is a result of the weight of what above you? Choices: - magnetic force - humidity - water - air A:
air

Q: Veins are blood vessels that carry blood toward what? Choices: - extremities - lung - brain - heart A:
heart

Q: Q: Terrestrial biomes are associated with land, while aquatic ones are associated with what? Choices: - plants - air - blood - water A:
A: water

Question: Q: The iron ion used to bind oxygen is on what type of "ring"? Choices: - DNA ring - petrarchan ring - reagent ring - porphyrin ring A:
Answer: porphyrin ring

*Question*
Q: What is the special name given to the diffusion of water through the cell membrane? Choices: - hemostasis - passive transport - electrolysis - osmosis A:
**Answer**
osmosis

(Q).
Q: Inorganic chemistry refers to the study of materials *not* containing which element? Choices: - hydrogen - helium - oxygen - carbon A:
(A).
carbon