Multiple Choice
Which of the following represents a specific description of a polypeptide?
2. Cell Chemistry & Cell Components
Proteins
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Protein molecules are polymers (chains) of __________.
A
DNA molecules
B
fatty acid molecules
C
sucrose molecules
D
purines and pyrimidines
E
amino acid molecules
Verified step by step guidance1
Understand that proteins are large, complex molecules that play many critical roles in the body. They are made up of smaller units called amino acids.
Recognize that amino acids are organic compounds that combine to form proteins. They are the building blocks of proteins.
Identify that proteins are polymers, which means they are made up of repeating units. In the case of proteins, these repeating units are amino acids.
Differentiate between the options given: DNA molecules are composed of nucleotides, fatty acids are components of lipids, sucrose is a type of sugar, and purines and pyrimidines are types of nucleotides found in DNA and RNA.
Conclude that the correct answer is amino acid molecules, as they are the monomers that link together to form protein polymers.
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