Q: The paranasal sinuses are hollow, air-filled spaces located within certain bones of the skull. all of the sinuses communicate with the nasal cavity (paranasal = "next to nasal cavity") and are lined with this? Choices: - respiration mucosa - oral mucosa - fluid mucosa - nasal mucosa A:
nasal mucosa

Q: The same reaction regenerates pyruvate, which is transported to which cells? Choices: - outermost - skin - symbionts - mesophyll A:
mesophyll

Q: In birds, lightweight air-filled bones and a large four-chambered heart are examples of adaptations for what purpose? Choices: - speed - long lifespan - mating - flight A:
flight