Answer the following question given this paragraph: The pointed pattern is a form of partial albinism, which results from a mutation in an enzyme that is involved in melanin production. The mutated enzyme is heat-sensitive; it fails to work at normal body temperatures. However, it is active in cooler areas of the skin. This results in dark coloration in the coolest parts of the cat's body, such as the lower limbs and the face, as shown in Figure above . The cat's face is cooled by the passage of air through the nose. Generally adult Siamese cats living in warm climates have lighter coats than those in cooler climates. Q: Partial albinism results from a mutation in an enzyme that is involved in the production of what? Choices: - cytoplasm - hair - cancer - melanin A:
melanin
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Answer the following question given this paragraph: The germ theory proposes that microorganisms are the cause of many diseases. Q: What theory proposes that microorganisms are the cause of many diseases? Choices: - malignant theory - evolution theory - mutated theory - germ theory A:
germ theory
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Answer the following question given this paragraph: Because air is slightly more optically dense than a vacuum, when sunlight passes from the vacuum of space into our atmosphere, it bends slightly towards the normal. When the sun is below the horizon and thus not visible on a direct line, the light path will bend slightly and thus make the sun visible by refraction. Observers can see the sun before it actually comes up over the horizon, or after it sets. Q: When the sun is below the horizon and thus not visible on a direct line, the light path will bend slightly and thus make the sun visible by what? Choices: - reflection - thermal - infrared - refraction A:
refraction
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Answer the following question given this paragraph: The volume increases as the temperature increases. The result has three significant figures. Q: What happens to volume as the temperature increases? Choices: - volume fluctuates - volume decreases - volume is unchanged - volume increases A:
volume increases
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