Q: Answer the following question given this paragraph: Equilibrium (Balance) Along with audition, the inner ear is responsible for encoding information about equilibrium, the sense of balance. A similar mechanoreceptora hair cell with stereociliasenses head position, head movement, and whether our bodies are in motion. These cells are located within the vestibule of the inner ear. Head position is sensed by the utricle and saccule, whereas head movement is sensed by the semicircular canals. The neural signals generated in the vestibular ganglion are transmitted through the vestibulocochlear nerve to the brain stem and cerebellum. The utricle and saccule are both largely composed of macula tissue (plural = maculae). The macula is composed of hair cells surrounded by support cells. The stereocilia of the hair cells extend into a viscous gel called the otolithic membrane (Figure 14.11). On top of the otolithic membrane is a layer of calcium carbonate crystals, called otoliths. The otoliths essentially make the otolithic membrane top-heavy. The otolithic membrane moves separately from the macula in response to head movements. Tilting the head causes the otolithic membrane to slide over the macula in the direction of gravity. The moving otolithic membrane, in turn, bends the sterocilia, causing some hair cells to depolarize as others hyperpolarize. The exact position of the head is interpreted by the brain based on the pattern of hair-cell depolarization. Q: On top of the otolithic membrane is a layer of calcium carbonate crystals, called what? Choices: - cones - gonads - calcites - otoliths A:
A: otoliths

Q: Answer the following question given this paragraph: Q: Some 96% of the dry mass consists of organic compounds produced by what? Choices: - erosion - electrolysis - reproduction - photosynthesis A:
A: photosynthesis

Q: Answer the following question given this paragraph: When two plates come toward each other, they create a convergent plate boundary. Q: A convergent plate boundary is created when two plates do what? Choices: - move away from each other - move perpendicular to each other - stay stationary - come toward each other A:
A: come toward each other

Q: Answer the following question given this paragraph: Q: The vertebrate circulatory system enables blood to deliver ________ and remove wastes throughout the body. Choices: - hydrogen and nutrients - acid and nutrients - fluid and nutrients - oxygen and nutrients A:
A: oxygen and nutrients