Introduction:
The monomer is a smaller subunit of molecules, which bond or join with the identical molecules to form a
Answer to Problem 1U
Correct answer:
The polymer is formed by the removal of an –OH group and a hydrogen atom between the two monomers. Therefore, option b is correct.
Explanation of Solution
Reason for the correct statement:
A polymer is a long molecule that is formed by the bonding between the smaller units of monomer molecules. The long chains of polymers are formed by the dehydration reaction. In a dehydration reaction, two monomer molecules form a covalent bond by the removal of a hydroxyl ion (-OH) of one monomer and the removal of hydrogen ion of another monomer.
Option b is given as “by the removal of as –OH group and a hydrogen atom.”
As the polymer molecules are formed by the removal of –OH group of one monomer and the hydrogen atom of another monomer, option b is the right answer.
Reasons for the incorrect statements:
Option a is given as “from the growth of the chain of carbon atom.”
The polymer is formed by the bond formation between the –OH and hydrogen group present in two monomers, not from the chain of carbon atoms. So, it is a wrong answer.
Option c is given as “by the addition of an –OH group and a hydrogen atom.”
The polymers are formed by dehydration reaction in which the removal of –OH and hydrogen atom occurs. So, it is a wrong answer.
Option d is given as “through hydrogen bonding.”
The polymers are formed with the formation of a covalent bond between the two monomer unit and not through hydrogen bonding. So, it is a wrong answer.
Hence, options a, c, and d are incorrect.
The polymers are formed by the dehydration reaction in which the covalent bond is formed between the two monomer subunit by removing the –OH group of one monomer unit and a hydrogen atom of another monomer unit.
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Chapter 3 Solutions
BIOLOGY 12TH ED (LL) W/ CONNECT
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