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DNA Structure Adenine(A) Thymine(T) Guanine(G) Cytosine(C) Deoxyribose(D)D (sugar) Phosphate D a. peptide bond b. covalent bond c. hydrogen bond d. ionic bond

DNA Structure Adenine(A) Thymine(T) Guanine(G) Cytosine(C) Deoxyribose(D)D (sugar) Phosphate D a. peptide bond b. covalent bond c. hydrogen bond d. ionic bond

Biochemistry
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
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What type of chemical bond is illustrated by the arrow? Refer to the given diagram and choose the letter of the correct answer.

### DNA Structure The diagram below illustrates the structure of DNA, highlighting its key components and their connections. Specifically, it shows how bases are paired and connected within the DNA double helix. The components are color-coded and labeled for clarity: - **Adenine (A)**: Blue - **Thymine (T)**: Green - **Guanine (G)**: Orange - **Cytosine (C)**: Yellow - **Deoxyribose (D) (Sugar)**: Pink - **Phosphate (P)**: Green **Diagram Explanation:** 1. **Base Pairing**: The adenine (A) nucleobase pairs with thymine (T) and the guanine (G) nucleobase pairs with cytosine (C). These pairs form the rungs of the DNA “ladder”. 2. **Hydrogen Bonds**: The pairs are held together by hydrogen bonds, indicated by dashed lines between A-T and G-C pairs. 3. **Sugar-Phosphate Backbone**: The sides of the ladder are formed by a sugar-phosphate backbone, consisting of deoxyribose sugars (D) connected to phosphate groups (P). A label in the diagram points out the hydrogen bonds holding a base pair together between adenine and thymine. **Multiple Choice Question:** Identify the type of bond indicated by the label in the diagram. a. peptide bond b. covalent bond c. hydrogen bond d. ionic bond **Answer:** The correct answer is **c. hydrogen bond**.
Transcribed Image Text:### DNA Structure The diagram below illustrates the structure of DNA, highlighting its key components and their connections. Specifically, it shows how bases are paired and connected within the DNA double helix. The components are color-coded and labeled for clarity: - **Adenine (A)**: Blue - **Thymine (T)**: Green - **Guanine (G)**: Orange - **Cytosine (C)**: Yellow - **Deoxyribose (D) (Sugar)**: Pink - **Phosphate (P)**: Green **Diagram Explanation:** 1. **Base Pairing**: The adenine (A) nucleobase pairs with thymine (T) and the guanine (G) nucleobase pairs with cytosine (C). These pairs form the rungs of the DNA “ladder”. 2. **Hydrogen Bonds**: The pairs are held together by hydrogen bonds, indicated by dashed lines between A-T and G-C pairs. 3. **Sugar-Phosphate Backbone**: The sides of the ladder are formed by a sugar-phosphate backbone, consisting of deoxyribose sugars (D) connected to phosphate groups (P). A label in the diagram points out the hydrogen bonds holding a base pair together between adenine and thymine. **Multiple Choice Question:** Identify the type of bond indicated by the label in the diagram. a. peptide bond b. covalent bond c. hydrogen bond d. ionic bond **Answer:** The correct answer is **c. hydrogen bond**.
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