BIOLOGY 12TH ED (LL) W/ CONNECT
12th Edition
ISBN: 9781264898091
Author: Raven
Publisher: MCG
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Question
Chapter 3, Problem 1U
Summary Introduction
Introduction:
The monomer is a smaller subunit of molecules, which bond or join with the identical molecules to form a
Expert Solution & Answer
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.
Conclusion
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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A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
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Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
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Chapter 3 Solutions
BIOLOGY 12TH ED (LL) W/ CONNECT
Ch. 3.1 - Describe the relationship between functional...Ch. 3.1 - Recognize the different kinds of isomers.Ch. 3.1 - Prob. 3LOCh. 3.2 - Prob. 1LOCh. 3.2 - Prob. 2LOCh. 3.3 - Prob. 1LOCh. 3.3 - Prob. 2LOCh. 3.3 - Prob. 3LOCh. 3.3 - Prob. 4LOCh. 3.4 - Prob. 1LO
Ch. 3.4 - Prob. 2LOCh. 3.4 - Prob. 3LOCh. 3.5 - Prob. 1LOCh. 3.5 - Prob. 2LOCh. 3.5 - Prob. 3LOCh. 3 - Prob. 1UCh. 3 - Why are carbohydrates important molecules for...Ch. 3 - Plant cells store energy in the form of ______,...Ch. 3 - Prob. 4UCh. 3 - A molecule of DNA or RNA is a polymer of a....Ch. 3 - Prob. 6UCh. 3 - What monomers make up a protein? a....Ch. 3 - A triglyceride is a form of _______ composed of...Ch. 3 - You can use starch or glycogen as an energy...Ch. 3 - Which of the following is NOT a difference between...Ch. 3 - Prob. 3ACh. 3 - A mutation that alters a single amino acid within...Ch. 3 - Two different proteins have the same domain in...Ch. 3 - What aspect of triglyceride structure accounts for...Ch. 3 - The spontaneous formation of a lipid bilayer in an...Ch. 3 - Prob. 1SCh. 3 - Hydrogen bonds and hydrophobic interactions each...Ch. 3 - Prob. 3S
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