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Select the incorrect statement for structure of B-DNA.
- a)The base pairs in DNA are stacked 3.4 Å apart
- b)Two full turn of the helical strand would involve twenty base pairs
- c)All base pairs consist of one purine and one pyrimidine
- d)Glycosidic bond is responsible for formation of backbone
Correct answer is option 'D'. Can you explain this answer?
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Select the incorrect statement for structure of B-DNA.a)The base pair...
Incorrect Statement for Structure of B-DNA:
Explanation:
The structure of B-DNA refers to the most common and stable form of DNA. It is a right-handed double helix structure that consists of two anti-parallel polynucleotide strands. The incorrect statement for the structure of B-DNA is:
a) The base pairs in DNA are stacked 3.4 Å apart
This statement is correct. In B-DNA, the base pairs are stacked 3.4 Å (angstroms) apart along the helical axis. This stacking of base pairs contributes to the stability of the DNA double helix.
b) Two full turns of the helical strand would involve twenty base pairs
This statement is correct. In B-DNA, each complete turn of the helix involves approximately 10 base pairs. Therefore, two full turns would involve twenty base pairs.
c) All base pairs consist of one purine and one pyrimidine
This statement is correct. Base pairing in DNA follows the complementary base pairing rule, where adenine (purine) always pairs with thymine (pyrimidine), and cytosine (pyrimidine) always pairs with guanine (purine).
d) Glycosidic bond is responsible for the formation of the backbone
This statement is incorrect. The glycosidic bond is not responsible for the formation of the backbone of DNA. The backbone of DNA is formed by the sugar-phosphate backbone, which consists of the alternating deoxyribose sugar and phosphate groups. The glycosidic bond, on the other hand, connects the nitrogenous base to the sugar molecule within each nucleotide.
In summary, option D is the incorrect statement for the structure of B-DNA because the glycosidic bond is not responsible for the formation of the backbone.
Explanation:
The structure of B-DNA refers to the most common and stable form of DNA. It is a right-handed double helix structure that consists of two anti-parallel polynucleotide strands. The incorrect statement for the structure of B-DNA is:
a) The base pairs in DNA are stacked 3.4 Å apart
This statement is correct. In B-DNA, the base pairs are stacked 3.4 Å (angstroms) apart along the helical axis. This stacking of base pairs contributes to the stability of the DNA double helix.
b) Two full turns of the helical strand would involve twenty base pairs
This statement is correct. In B-DNA, each complete turn of the helix involves approximately 10 base pairs. Therefore, two full turns would involve twenty base pairs.
c) All base pairs consist of one purine and one pyrimidine
This statement is correct. Base pairing in DNA follows the complementary base pairing rule, where adenine (purine) always pairs with thymine (pyrimidine), and cytosine (pyrimidine) always pairs with guanine (purine).
d) Glycosidic bond is responsible for the formation of the backbone
This statement is incorrect. The glycosidic bond is not responsible for the formation of the backbone of DNA. The backbone of DNA is formed by the sugar-phosphate backbone, which consists of the alternating deoxyribose sugar and phosphate groups. The glycosidic bond, on the other hand, connects the nitrogenous base to the sugar molecule within each nucleotide.
In summary, option D is the incorrect statement for the structure of B-DNA because the glycosidic bond is not responsible for the formation of the backbone.
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Community Answer
Select the incorrect statement for structure of B-DNA.a)The base pair...
The backbone is formed of sugar and phosphate, so ester bond is present in backbone.
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Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer?
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Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer?.
Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer?.
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Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Select the incorrect statement for structure of B-DNA.a)The base pairs in DNA are stacked 3.4 Å apartb)Two full turn of the helical strand would involve twenty base pairsc)All base pairs consist of one purine and one pyrimidined)Glycosidic bond is responsible for formation of backboneCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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