(Q).
Q: Osmosis is driven by the imbalance of what? Read this paragraph and choose the correct option from the provided answers: Osmosis is the transport of water through a semipermeable membrane from a region of high concentration to a region of low concentration. Osmosis is driven by the imbalance in water concentration. For example, water is more concentrated in your body than in Epsom salt. When you soak a swollen ankle in Epsom salt, the water moves out of your body into the lower-concentration region in the salt. Similarly, dialysis is the transport of any other molecule through a semipermeable membrane due to its concentration difference. Both osmosis and dialysis are used by the kidneys to cleanse the blood. Osmosis can create a substantial pressure. Consider what happens if osmosis continues for some time, as illustrated in Figure 12.23. Water moves by osmosis from the left into the region on the right, where it is less concentrated, causing the solution on the right to rise. This movement will continue until the pressure gh created by the extra height of fluid on the right is large enough to stop further osmosis. This pressure is called a back pressure. The back pressure. Choices: - precipitation - isolation - evaporation - water concentration A:
(A).
water concentration

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Q: What oily substance prevents the hair and skin of living things from drying out? Read this paragraph and choose the correct option from the provided answers: Sebaceous glands are commonly called oil glands. They produce an oily substance called sebum. Sebum is secreted into hair follicles. Then it makes its way along the hair shaft to the surface of the skin. Sebum waterproofs the hair and skin and helps prevent them from drying out. Choices: - pus - progesterone - pancreatic enzymes - sebum A:
(A).
sebum

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Q: Ionic bonds between two atoms require one metal and one what? Read this paragraph and choose the correct option from the provided answers: Ionic bonds tend to form between atoms for which the electronegativity differences are 2.0 and above. In general, ionic bonds between two atoms require one metal and one nonmetal. Choices: - liquid - gas - metallic - nonmetal A:
(A).
nonmetal