Ques:Answer the following question given this paragraph: The diffusion of water across a membrane because of a difference in concentration is called osmosis . Let's explore three different situations and analyze the flow of water. Q: The diffusion of water across a membrane because of a difference in concentration is called? Choices: - absorption - hemostasis - diffusion - osmosis A:

Ans:osmosis
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Ques:Answer the following question given this paragraph: Many people think of bones as being dead, dry, and brittle. These adjectives correctly describe the bones of a preserved skeleton, but the bones in a living human being are very much alive. As shown in Figure below , the basic structure of bones is bone matrix , which forms the underlying rigid framework of bones, formed of both compact and spongy bone. The bone matrix consists of tough protein fibersmainly collagenthat become hard and rigid due to mineralization with calcium crystals. Bone matrix is crisscrossed by blood vessels and nerves and also contains specialized bone cells that are actively involved in metabolic processes. Q: The bone matrix consists of tough protein fibersmainly what? Choices: - tissues - hemoglobin - tendons - collagen A:

Ans:collagen
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Ques:Answer the following question given this paragraph: Tadpoles go through many changes to become adult frogs. Q: What do tadpoles change into? Choices: - reptiles - toads - mud puppies - adult frogs A:

Ans:adult frogs
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Ques:Answer the following question given this paragraph: The properties of liquids are intermediate between those of gases and solids but are more similar to solids. In contrast to intramolecular forces, such as the covalent bonds that hold atoms together in molecules and polyatomic ions, intermolecular forces hold molecules together in a liquid or solid. Intermolecular forces are generally much weaker than covalent bonds. For example, it requires 927 kJ to overcome the intramolecular forces and break both OH bonds in 1 mol of water, but it takes only about 41 kJ to overcome the intermolecular attractions and convert 1 mol of liquid water to water vapor at 100C. (Despite this seemingly low value, the intermolecular forces in liquid water are among the strongest such forces known!) Given the large difference in the strengths of intra- and intermolecular forces, changes between the solid, liquid, and gaseous states almost invariably occur for molecular substances without breaking covalent bonds. Q: The properties of liquids are intermediate between those of gases and solids but are more similar to? Choices: - gases - oils - plasma - solids A:

Ans:
solids
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