12 Questions
Which of the following is NOT a physiological importance of nucleotides?
Being structural components of RNA and DNA
Which nucleotide serves as a carrier of activated intermediates in the synthesis of some carbohydrates, lipids, and conjugated proteins?
Cytidine diphosphate (CDP)
Which nucleotide plays a role as a second messenger in signal transduction pathways?
Cyclic adenosine monophosphate (cAMP)
Which nucleotide serves as an important regulatory compound for many pathways of intermediary metabolism?
Adenosine triphosphate (ATP)
What are nucleotides composed of?
Nitrogenous base, pentose monosaccharide, and one, two, or three phosphate groups
To which families of compounds do the nitrogen-containing bases belong?
Purines and pyrimidines
Which purine bases are present in both DNA and RNA?
Adenine (A) and guanine (G)
What is the second pyrimidine base in DNA?
Thymine (T)
How are nucleosides produced?
By adding a pentose sugar to a base through an N-glycosidic bond
What is the result of adding one or more phosphate groups to a nucleoside?
Nucleotide
What is the structure called when one phosphate group is attached to the 5′carbon of the pentose?
Nucleoside monophosphate
What are the second and third phosphates connected to in a nucleoside diphosphate?
The nucleotide by 'high-energy bonds'
Test your knowledge on the physiological importance of nucleotides, the building blocks of RNA and DNA. Explore the essential roles of nucleotides in protein synthesis, cell proliferation, and as carriers of activated intermediates in biochemical pathways.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
