Concept explainers
A
a. sugar.
b. nitrogen-containing group.
c. sulfur-containing group.
d. phosphorus-containing group.

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.
Nucleotide is formed of sugar, phosphate group and nitrogenous bases and it do not contain sulfur containing group.
Want to see more full solutions like this?
Chapter 7 Solutions
BIOLOGY: CONCEPTS AND INVESTIGATIONS,
Additional Science Textbook Solutions
Biological Science (6th Edition)
HUMAN ANATOMY
Campbell Essential Biology (7th Edition)
Biology: Life on Earth with Physiology (11th Edition)
SEELEY'S ANATOMY+PHYSIOLOGY
Genetics: From Genes to Genomes
- 1. Match each vocabulary term to its best descriptor A. affinity B. efficacy C. inert D. mimic E. how drugs move through body F. how drugs bind Kd Bmax Agonist Antagonist Pharmacokinetics Pharmacodynamicsarrow_forward50 mg dose of a drug is given orally to a patient. The bioavailability of the drug is 0.2. What is the volume of distribution of the drug if the plasma concentration is 1 mg/L? Be sure to provide units.arrow_forwardDetermine Kd and Bmax from the following Scatchard plot. Make sure to include units.arrow_forward
- Choose a catecholamine neurotransmitter and describe/draw the components of the synapse important for its signaling including synthesis, packaging into vesicles, receptors, transporters/degradative enzymes. Describe 2 drugs that can act on this system.arrow_forwardThe following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. a) Which has a higher potency? b) Which is has a higher efficacy? c) What is the approximate Kd of capsaicin in uM? (you can round to the nearest power of 10)arrow_forwardWhat is the rate-limiting-step for serotonin synthesis?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning





