Textbook Question
Fill in the following table with the analogous nucleic acid structures:
598
views
Ch.11 Nucleic Acids Big Molecules with a Big Role
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch.4 Introduction to Organic Compounds75
- Ch.5 Chemical Reactions19
- Ch.6 Carbohydrates Life's Sweet Molecules62
- Ch.7 States of Matter and Their Attractive Forces8
- Ch.8 Solution Chemistry Sugar and Water Do Mix4
- Ch.10 Proteins Workers of the Cell89
- Ch.11 Nucleic Acids Big Molecules with a Big Role69
- Ch.12 Food as Fuel An Overview of Metabolism65
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696Not the one you use?Change textbook
Chapter 7, Problem 19b
Write the base sequence and label the 3' and 5' ends of the complementary strand for a segment of DNA with the following base sequences:
b. 5'CCCCTTTT3'
Verified step by step guidance1
Identify the complementary base pairing rules for DNA: Cytosine (C) pairs with Guanine (G), and Thymine (T) pairs with Adenine (A).
Write the complementary strand by replacing each base in the given sequence with its complementary base: C → G, T → A.
Reverse the direction of the complementary strand to ensure it is antiparallel to the original strand. The original strand is 5' to 3', so the complementary strand will be 3' to 5'.
Label the ends of the complementary strand appropriately: the 3' end corresponds to the start of the complementary sequence, and the 5' end corresponds to the end of the complementary sequence.
Combine the complementary bases and their labels to finalize the complementary strand: 3'GGGGAAAA5'.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
3mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
DNA Structure
DNA is composed of two strands that form a double helix, with each strand made up of nucleotides. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base. The strands are oriented in opposite directions, with one running 5' to 3' and the other 3' to 5'. This antiparallel arrangement is crucial for DNA replication and function.
Recommended video:
Guided course
3:27
DNA Double Helix Concept 1
Base Pairing Rules
In DNA, nitrogenous bases pair specifically: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). This complementary base pairing is essential for the accurate replication of DNA and the transmission of genetic information. Understanding these rules is necessary to determine the complementary strand from a given DNA sequence.
Recommended video:
Guided course
2:01Base Pairing Concept 2
5' and 3' Ends
The terms 5' (five prime) and 3' (three prime) refer to the carbon numbers in the DNA's sugar backbone. The 5' end has a phosphate group attached to the fifth carbon, while the 3' end has a hydroxyl group attached to the third carbon. Labeling these ends is important for understanding the directionality of DNA strands and how they interact during processes like replication and transcription.
Recommended video:
Guided course
1:43Primary Structure of Nucleic Acids Concept 2
Related Practice
Textbook Question
Write the base sequence and label the 3' and 5' ends of the complementary strand for a segment of DNA with the following base sequences:
d. 5'CGCGATATTA3'
652
views
Textbook Question
Describe the orientation of antiparallel strands in DNA. Use the terms 3' and 5' in your description.
727
views
Textbook Question
List the similarities and differences in the secondary structure of a protein and the secondary structure of DNA.
573
views
Textbook Question
How are the two strands of nucleic acid in DNA held together?
661
views
Textbook Question
Draw the dinucleotide AT that would be found in DNA. Label the 5' and 3' ends of your structure. Identify the phosphodiester bond.
549
views