Multiple Choice
In the context of early scientific discoveries, what were 'animalcules' as observed by Antonie van Leeuwenhoek?
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Intro to Organic Chemistry
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Which type of macromolecules consists primarily of hydrophobic molecules?
A
Proteins
B
Nucleic acids
C
Lipids
D
Carbohydrates
Verified step by step guidance1
Begin by understanding the nature of macromolecules. Macromolecules are large molecules essential for life, including proteins, nucleic acids, lipids, and carbohydrates.
Identify the characteristic properties of each type of macromolecule. Proteins are composed of amino acids and are involved in various cellular functions. Nucleic acids, such as DNA and RNA, store and transmit genetic information. Carbohydrates are primarily involved in energy storage and structural functions.
Focus on lipids. Lipids are a diverse group of hydrophobic molecules, meaning they do not mix well with water. This hydrophobic nature is due to their long hydrocarbon chains or rings, which are nonpolar.
Understand why lipids are hydrophobic. The nonpolar hydrocarbon chains in lipids repel water, making them insoluble in aqueous environments. This property is crucial for forming cell membranes and storing energy.
Conclude that lipids are the macromolecules consisting primarily of hydrophobic molecules, distinguishing them from proteins, nucleic acids, and carbohydrates, which have more polar or charged components.
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