Answer the following using the structure: a. Is this a purine or pyrimidine? b. Is this a deoxyribonucleotide or a ribonucleotide? c. Indicate the component that changes this from a nucleoside to a nucleotide.
Answer the following using the structure: a. Is this a purine or pyrimidine? b. Is this a deoxyribonucleotide or a ribonucleotide? c. Indicate the component that changes this from a nucleoside to a nucleotide.
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
Related questions
Question
Answer the following using the structure:
a. Is this a purine or pyrimidine?
b. Is this a deoxyribonucleotide or a ribonucleotide?
c. Indicate the component that changes this from a nucleoside to a nucleotide .

Transcribed Image Text:This image displays the chemical structure of a nucleotide.
### Components of the Nucleotide Structure:
1. **Phosphate Group**:
- The phosphate group is represented by a phosphorus atom (P) surrounded by four oxygen atoms (O), where one of the oxygens is connected with a double bond to the phosphorus. The entire group is negatively charged, indicated by the 'O-' symbols.
2. **Sugar Molecule**:
- A five-membered ring structure consistent with ribose (RNA) with carbon (C) atoms implicitly bonded to hydrogen (H) atoms where each intersection of lines in the pentagon signifies a carbon atom.
- Hydroxyl groups (–OH) are attached to the second and third carbon atoms, typical of the ribose sugar found in RNA.
3. **Nitrogenous Base**:
- The nitrogenous base is a purine, specifically adenine, indicated by the double-ring structure containing carbon (C) and nitrogen (N) atoms.
- An amino group (–NH₂) is bonded to the purine ring, which is characteristic of adenine.
### Explanation:
This nucleotide structure represents adenosine monophosphate (AMP), a building block of RNA. The structure includes:
- A phosphate group linked to the 5' carbon of the ribose sugar.
- The purine base adenine attached at the 1' carbon of the sugar.
This detailed diagram is essential for understanding the composition and function of nucleotides in nucleic acids.
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