Multiple Choice
Which of the following best describes a result of an organism having lipids in its body?
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1. Introduction to Biochemistry
Lipids
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Which of the following is a characteristic shared by fats, steroids, and waxes?
A
They are all hydrophobic molecules.
B
They are all polymers made of repeating monomers.
C
They all contain peptide bonds.
D
They all function primarily as enzymes.
Verified step by step guidance1
Understand the question: The problem is asking for a shared characteristic among fats, steroids, and waxes. Carefully analyze the options provided to determine which one applies to all three types of molecules.
Recall the properties of fats, steroids, and waxes: These molecules are classified as lipids, which are generally hydrophobic (water-repelling) due to their nonpolar nature.
Evaluate the first option: 'They are all hydrophobic molecules.' This is true because lipids, including fats, steroids, and waxes, are insoluble in water and share this characteristic.
Evaluate the second option: 'They are all polymers made of repeating monomers.' This is incorrect because lipids are not polymers; they are composed of smaller units like fatty acids and glycerol (in the case of fats) or other structures, but they do not consist of repeating monomers like proteins or nucleic acids.
Evaluate the remaining options: 'They all contain peptide bonds' is incorrect because peptide bonds are specific to proteins, not lipids. 'They all function primarily as enzymes' is also incorrect because lipids do not act as enzymes; enzymes are proteins that catalyze biochemical reactions.
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