Which substance is made of polymers
Subject : Biology
Question:
Which substance is made of polymers?
A. marble
B. protein
C. salt
D. steel
Expert Verified Solution:
The correct answer is B. protein.
Explanation:
Polymers are large molecules composed of repeating subunits called monomers. Proteins are natural polymers made up of long chains of amino acids, which are the monomers in this case. These amino acid chains fold into complex structures, performing various functions in living organisms.
Marble (A) is a type of metamorphic rock composed primarily of calcite or dolomite, not polymers.
Salt (C), specifically table salt, is a simple ionic compound composed of sodium and chloride ions.
Steel (D) is an alloy primarily made of iron and carbon, and while it has a structured arrangement of atoms, it is not a polymer.
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