Comprehension
Based on the context given below, answer the following questions:
DNA in eukaryotes is a double-helical structure with two anti-parallel strands intertwined equidistantly. The double-helical structure was deciphered by James Watson and Francis Crick on the basis of X-ray diffraction studies. The hydrophilic backbones of alternating sugar and phosphate groups are on the outside of the helix held together by phosphodiester bonds. The purine and pyrimidine bases of both the strands are stacked inside the double helix. Adenine binds with thymine with hydrogen bond and cytosine binds with guanine with hydrogen bond. The DNA is transcribed into messenger RNA, ribosomal RNA and transfer RNA. Messenger RNA is translated into protein in the cytoplasm.
DNA in eukaryotes is a double-helical structure with two anti-parallel strands intertwined equidistantly. The double-helical structure was deciphered by James Watson and Francis Crick on the basis of X-ray diffraction studies. The hydrophilic backbones of alternating sugar and phosphate groups are on the outside of the helix held together by phosphodiester bonds. The purine and pyrimidine bases of both the strands are stacked inside the double helix. Adenine binds with thymine with hydrogen bond and cytosine binds with guanine with hydrogen bond. The DNA is transcribed into messenger RNA, ribosomal RNA and transfer RNA. Messenger RNA is translated into protein in the cytoplasm.
Question: 1
X-ray diffraction experiment to analyze the structure of DNA was performed by
X-ray diffraction experiment to analyze the structure of DNA was performed by
Updated On: Mar 18, 2024
- James Watson and Francis Crick
- Rosalind Franklin and Maurice Wilkins
- Tom Cech and Sidney Altman
- Martha Chase and Alfred Hershey
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The Correct Option is B
Solution and Explanation
The correct option is(B): Rosalind Franklin and Maurice Wilkins
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Question: 2
Consider a DNA segment:
5'-GTAACCTACCG-3'
3'-CATTGGATGGC-5'
If the RNA polymerase transcribes the segment from left to right, the mRNA sequence would be
Consider a DNA segment:
5'-GTAACCTACCG-3'
3'-CATTGGATGGC-5'
If the RNA polymerase transcribes the segment from left to right, the mRNA sequence would be
5'-GTAACCTACCG-3'
3'-CATTGGATGGC-5'
If the RNA polymerase transcribes the segment from left to right, the mRNA sequence would be
Updated On: Mar 18, 2024
- 5'-CAUUGGAUGGC-3'
- 5'-GUAACCUACCG-3'
- 5'-CGGUAGGUUAC-3'
- 5'-GCCAUCCAAUG-3'
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The Correct Option is B
Solution and Explanation
The correct option is(B): 5'-GUAACCUACCG-3'
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Question: 3
In a 1300 (base-pair) DNA, if number of adenine residues are 800, what is the number of Watson-Crick hydrogen bonds between cytosine and guanine residues?
In a 1300 (base-pair) DNA, if number of adenine residues are 800, what is the number of Watson-Crick hydrogen bonds between cytosine and guanine residues?
Updated On: Mar 18, 2024
- 500
- 1000
- 1500
- 3000
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The Correct Option is C
Solution and Explanation
The correct option is(C): 1500
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