교과서 질문
Which of the following are hydrophobic organic molecules?
a. Proteins
b. Carbohydrates
c. Lipids
d. Nucleic acids
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5. Molecules of Microbiology
Lipids
객관식
How do phospholipids interact with water molecules?
A
The polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract).
B
Phospholipids do not interact with water because water is polar and lipids are nonpolar.
C
The polar heads interact with water; the nonpolar tails do not.
D
Phospholipids dissolve in water.
검증된 단계별 안내1
Understand the structure of phospholipids: Phospholipids are composed of a hydrophilic (water-attracting) 'head' and two hydrophobic (water-repelling) 'tails'.
Recognize the nature of water: Water is a polar molecule, meaning it has a partial positive charge on one side and a partial negative charge on the other, which allows it to interact with other polar molecules.
Analyze the interaction between phospholipids and water: The hydrophilic heads of phospholipids are attracted to water molecules due to their polar nature, allowing them to interact with water.
Consider the behavior of the hydrophobic tails: The nonpolar tails of phospholipids do not interact with water and tend to avoid it, often leading to the formation of structures like micelles or bilayers where the tails are shielded from water.
Conclude the correct interaction: Based on the above analysis, the polar heads of phospholipids interact with water, while the nonpolar tails do not, making option c the correct answer.
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