BIOLOGY: CONCEPTS AND INVESTIGATIONS
BIOLOGY: CONCEPTS AND INVESTIGATIONS
18th Edition
ISBN: 9781307301335
Author: Hoefnagels
Publisher: MCG/CREATE
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Textbook Question
Chapter 7, Problem 1MCQ

A nucleotide is composed of all of the following EXCEPT a

a. sugar.

b. nitrogen-containing group.

c. sulfur-containing group.

d. phosphorus-containing group.

Expert Solution & Answer
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Summary Introduction

Introduction:

Nucleotides are defines as the organic molecules which serves as the building block of nucleic acid. It consists of phosphate group, pentose sugar and nitrogenous base. There are two types of nucleic acid such as ribonucleic acid and deoxyribonucleic acid. These are essential biomolecules responsible for forming all living forms on earth.

Answer to Problem 1MCQ

Correct answer:

The nucleotide is composed of phosphate group, pentose sugar and nitrogenous bases. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement

A nucleotide is organic molecule which is formed by phosphate group, pentose sugar and nitrogenous bases. There are two types of nitrogenous bases such as pyrimidine and purine bases. It also contain phosphate group. Deoxyribonucleic acid and Ribonucleic acid is formed by nucleotide. The only difference between in these two nucleic acid is presence of deoxyribose and ribose sugar as well as in RNA uracil is bonded with thymine while in DNA cytosine is bonded with thymine.

Option (c) is given as “sulfur-containing group”.

As, “Sulfur containing group is not found in nucleotide as it contains nitrogenous bases, phosphate group and sugar”, is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a), is given as “sugar”.

There are two types of sugar is present in nucleotide as in RNA ribose sugar is present while in DNA deoxyribose sugar is present. Hence, it is a wrong answer.

Option (b), is given as “nitrogen-containing group”

Nitrogen-containing group are the nitrogenous bases which is of two types such as pyrimidine and purine. Hence, it is a wrong answer.

Option (d), is given as “phosphate-containing group”.

Nucleotide is formed by phosphate- sugar backbone along with that purine and pyrimidine bases are joined together by hydrogen bonds. Hence, it is a wrong answer.

Hence, options (a), (b), and (d), are incorrect.

Conclusion

Nucleotide is formed of sugar, phosphate group and nitrogenous bases and it do not contain sulfur containing group.

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Students have asked these similar questions
In a DNA molecule,   Select one: A.  The nucleotides are hydrogen-bonded to one another B.  The bases are covalently bonded to one another. C.  The bases are hydrogen-bonded to the sugars. D.  The nucleotides are covalently bonded to one another.
A friend tells you that only four differentkinds of bases are found in RNA. What would you say in reply?
The DNA of different species differs in the (a) sequence of bases. (b) complementary base-pairing. (c) number of nucleotide strands. (d) location of the sugar-phosphate portion of the DNA molecule.

Chapter 7 Solutions

BIOLOGY: CONCEPTS AND INVESTIGATIONS

Ch. 7.4 - What is the role of RNA polymerase in...Ch. 7.4 - What are the roles of the promoter and terminator...Ch. 7.4 - How is mRNA modified before it leaves the nucleus...Ch. 7.5 - How did researchers determine that the genetic...Ch. 7.5 - What happens in each stage of translation?Ch. 7.5 - Where in the cell does translation occur?Ch. 7.5 - How are polypeptides modified after translation?Ch. 7.6 - What are some reasons that cells regulate gene...Ch. 7.6 - Prob. 2MCCh. 7.6 - Prob. 3MCCh. 7.6 - Prob. 4MCCh. 7.7 - What is a mutation?Ch. 7.7 - What are the types of mutations, and how does each...Ch. 7.7 - Prob. 3MCCh. 7.7 - Prob. 4MCCh. 7.7 - How are mutations important?Ch. 7.8 - What question about the FOXP2 gene were the...Ch. 7.8 - What insights could scientists gain by...Ch. 7 - A nucleotide is composed of all of the following...Ch. 7 - Prob. 2MCQCh. 7 - Transcription copies a _______ to a complementary...Ch. 7 - Choose the DNA sequence from which this mRNA...Ch. 7 - Prob. 5MCQCh. 7 - Prob. 6MCQCh. 7 - How does the lac operon regulate lactose digestion...Ch. 7 - Prob. 8MCQCh. 7 - Prob. 9MCQCh. 7 - Prob. 10MCQCh. 7 - Explain how Griffiths experiment and Avery,...Ch. 7 - Prob. 2WIOCh. 7 - Prob. 3WIOCh. 7 - Put the following in order from smallest to...Ch. 7 - Prob. 5WIOCh. 7 - List the three major types of RNA and their...Ch. 7 - Some people compare DNA to a blueprint stored in...Ch. 7 - Prob. 8WIOCh. 7 - Prob. 9WIOCh. 7 - If a protein is 1259 amino acids long, what is the...Ch. 7 - The amount of melanin in the skin is controlled by...Ch. 7 - The roundworm C. elegans has 556 cells when it...Ch. 7 - Refer to the figure to answer these questions: a....Ch. 7 - A protein-encoding region of a gene has the...Ch. 7 - Explain how a mutation in a protein-encoding gene,...Ch. 7 - Describe the mutation shown in figure 7.27 and...Ch. 7 - Parkinson disease causes rigidity, tremors, and...Ch. 7 - Prob. 18WIOCh. 7 - Refer to figure 7.28 and the chapter con tent to...Ch. 7 - Prob. 2PITCh. 7 - Prob. 3PITCh. 7 - Prob. 4PIT
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