The back bone of double helical DNA is formed by which of the following (a) Base and Phosphate (b) Phosphate and sugar (c) Sugar and base (d) Base only? - EduRev NEET Question

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The back bone of double helical DNA is formed by which of the following (a) Base & Phosphate (b) Phosphate & sugar (c) Sugar & base (d) Base only?

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The back bone of double helical DNA is formed by which of the followin...

Backbone is constituted by sugar and phosphate and nitrogenous bases are projected inside it

Answered by Sushil Kumar · View profile

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The back bone of double helical DNA is formed by which of the followin...

Sugar phosphate and nitrogenous base

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Read the following and answer any four questions from 2(i) to 2(v) given below: In prokaryotes, DNA is circular and present in the cytoplasm but in eukaryotes, DNA is linear and mainly confined to the nucleus. DNA or deoxyribonucleic acid is a long polymer of nucleotides. In 1953, the first correct double helical structure of DNA was worked out by Watson and Crick. Based on the X-ray diffraction data produced by Maurice Wilkins and Rosalind Franklin. It is composed of three components, i.e., A phosphate group, a deoxyribose sugar and a nitrogenous base. Different forms of DNA are B-DNA, Z-DNA, A-DNA, C-DNA and D-DNA.The double chain of B-DNA is coiled in a helical fashion. Ihe spiral twisting of B-DNA duplex produces

Read the following and answer any four questions from 2(i) to 2(v) given below: In prokaryotes, DNA is circular and present in the cytoplasm but in eukaryotes, DNA is linear and mainly confined to the nucleus. DNA or deoxyribonucleic acid is a long polymer of nucleotides. In 1953, the first correct double helical structure of DNA was worked out by Watson and Crick. Based on the X-ray diffraction data produced by Maurice Wilkins and Rosalind Franklin. It is composed of three components, i.e., A phosphate group, a deoxyribose sugar and a nitrogenous base. Different forms of DNA are B-DNA, Z-DNA, A-DNA, C-DNA and D-DNA.Name the linkage present between the nitrogen base and pentose sugar in DNA.

Read the passage given below and answer the following questions:Adenosine triphosphate (ATP) is the energy carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes. ATP is a nucleotide that consists of three main structures: the nitrogenous base, adenine; the sugar, ribose; and a chain of three phosphate groups bound to ribose. The phosphate tail of ATP is the actual power source which the cell taps. Available energy is contained in the bonds between the phosphates and is released when they are broken, which occurs through the addition of a water molecule (a process called hydrolysis). Usually only the outer phosphate is removed from ATP to yield energy; when this occurs ATP is converted to adenosine diphosphate (ADP), the form of the nucleotide having only two phosphates.The importance of ATP (adenosine triphosphat e) as the main source of chemical energy in living matter and its involvement in cellular processes has long been recognized. The primary mechanism whereby higher organisms, including humans, generate ATP is through mitochondrial oxidative phosphorylation. For the majority of organs, the main metabolic fuel is glucose, which in the presence of oxygen undergoes complete combustion to CO2 and H2O: C6H12O6 + 6O2 → 6O2 + 6H2O + energyThe free energy (ΔG) liberated in this exergonic (ΔG is negative) reaction is partially trapped as ATP in two consecutive processes: glycolysis (cytosol) and oxidative phosphorylation (mitochondri

(1)Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by

A nucleotide is formed of

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The back bone of double helical DNA is formed by which of the following (a) Base & Phosphate (b) Phosphate & sugar (c) Sugar & base (d) Base only?

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