Q: Answer the following question given this paragraph: The dermis is the inner layer of skin. It is made of tough connective tissue. The dermis is attached to the epidermis by fibers made of the protein collagen. The dermis is where most skin structures are located. Look again at Figure above . You'll see that the dermis has blood vessels and nerve endings. The nerve endings explain why skin can sense pain, pressure, and temperature. If you cut your skin and it bleeds, the cut has penetrated the dermis and damaged a blood vessel. The cut probably hurts as well because of the nerve endings in this skin layer. Q: What is the inner layer of skin called? Choices: - connective layer - hypodermis - the epidermis - the dermis A:
A: the dermis

Q: Answer the following question given this paragraph: The ability of a solute to dissolve in a particular solvent is called solubility . Many chemical substances are soluble in water. In fact, so many substances are soluble in water that water is called the universal solvent. Water is a strongly polar solvent, and polar solvents are better at dissolving polar solutes. Many organic compounds and other important biochemicals are polar, so they dissolve well in water. On the other hand, strongly polar solvents like water cannot dissolve strongly nonpolar solutes like oil. Did you ever try to mix oil and water? Even after being well shaken, the two substances quickly separate into distinct layers. Q: What is known as the universal solvent? Choices: - oil - air - vinegar - water A:
A: water

Q: Answer the following question given this paragraph: An electric transformer is a device that uses electromagnetic induction to change the voltage of electric current. Electromagnetic induction is the process of generating current with a magnetic field. It occurs when a magnetic field and electric conductor, such as a coil of wire, move relative to one another. A transformer may either increase or decrease voltage. You can see the basic components of an electric transformer in the Figure below . For an animation showing how a transformer works, go to this URL: http://www. youtube. com/watch?v=VucsoEhB0NA . Q: What type of device uses electromagnetic induction to change the voltage of electric current? Choices: - radioactive transformer - hot transformer - mechanical transformer - electronic transformer A:
A: electronic transformer

Q: Answer the following question given this paragraph: Q: What happens to most of the energy in a trophic level as it passes to the next higher level? Choices: - it increases - it is transferred - it stays the same - it is lost A:
A: it is lost