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Ch. 7 - DNA Structure and Replication
Sanders - Genetic Analysis: An Integrated Approach 3rd Edition
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Sanders 3rd EditionCh. 7 - DNA Structure and Replication문제 5g
7장, 문제 5g

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.
Is the bond in part (f) a covalent or a noncovalent bond?

검증된 단계별 안내
1
Step 1: Understand the structure of DNA. DNA is composed of two strands that form a double helix. Each strand consists of nucleotides connected by covalent bonds, specifically phosphodiester bonds between the sugar and phosphate groups.
Step 2: Recognize the types of bonds in DNA. Covalent bonds are strong bonds that hold the backbone of the DNA together, while noncovalent bonds, such as hydrogen bonds, occur between complementary base pairs (A-T and G-C) to stabilize the double helix.
Step 3: Analyze the sequence provided. The sequence 5'-ATCGACCTGATC-3' represents one strand of DNA. To determine the type of bond in part (f), consider whether the bond is part of the backbone (covalent) or between base pairs (noncovalent).
Step 4: Recall that phosphodiester bonds are covalent and occur between the 3' hydroxyl group of one nucleotide and the 5' phosphate group of the next nucleotide in the strand. Hydrogen bonds, on the other hand, are noncovalent and occur between the nitrogenous bases of complementary strands.
Step 5: Based on the context of the question, identify whether the bond in part (f) is within the backbone (covalent) or between base pairs (noncovalent). Use the definitions and structural understanding of DNA to make this determination.

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주요 개념

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Covalent Bonds

Covalent bonds are strong chemical bonds formed when two atoms share one or more pairs of electrons. In the context of DNA, covalent bonds link the sugar and phosphate groups of the DNA backbone, creating a stable structure that holds the nucleotides together.
추천 영상:
가이드 코스
06:25
DNA Structure

Noncovalent Bonds

Noncovalent bonds are weaker interactions that do not involve the sharing of electrons. In DNA, these include hydrogen bonds between complementary base pairs, which stabilize the double helix structure but allow for the strands to separate during processes like replication and transcription.
추천 영상:
가이드 코스
06:25
DNA Structure

DNA Structure

DNA is composed of two strands that form a double helix, with each strand made up of nucleotides. The sequence of nucleotides encodes genetic information, and the interactions between covalent and noncovalent bonds are crucial for maintaining the integrity and functionality of the DNA molecule.
추천 영상:
가이드 코스
06:25
DNA Structure
관련 실천
교과서 질문

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

Which chemical groups of nucleotides react to form the bond in part (b)?

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교과서 질문

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What enzymes catalyze the reaction in part (d)?

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교과서 질문

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What term is used to describe the pattern of base pairing between one DNA strand and its partner in a duplex?

488
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교과서 질문

The principles of complementary base pairing and antiparallel polarity of nucleic acid strands in a duplex are universal for the formation of nucleic acid duplexes. What is the chemical basis for this universality?

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교과서 질문

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

Identify the bond that joins one strand of a DNA duplex to the other strand.

581
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교과서 질문

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What term is used to describe the polarity of two DNA strands in a duplex?

528
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