객관식
Which of the following characteristics do all lipids have in common?
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32. Lipids
Intro to Lipids
객관식
What structural feature makes lipids hydrophobic?
A
Ability to form hydrogen bonds with water
B
Presence of ionic charges
C
High density of polar functional groups
D
Presence of long chains
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검증된 단계별 안내1
Understand the term 'hydrophobic': In chemistry, 'hydrophobic' refers to the tendency of a molecule to repel water or not mix with water. This is typically due to the lack of polar groups that can interact with water molecules.
Identify the structural feature of lipids: Lipids are a diverse group of compounds, but they generally share a common feature of having long hydrocarbon chains or rings.
Analyze the nature of hydrocarbon chains: Hydrocarbon chains are composed of carbon and hydrogen atoms. These chains are nonpolar, meaning they do not have a charge distribution that can interact with polar water molecules.
Relate nonpolarity to hydrophobicity: Because hydrocarbon chains are nonpolar, they do not form hydrogen bonds with water, making them hydrophobic. This is why lipids do not dissolve in water.
Conclude the structural feature responsible for hydrophobicity: The presence of long hydrocarbon chains in lipids is the key structural feature that makes them hydrophobic, as these chains do not interact favorably with water.
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