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Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork?
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Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e.,...
Assertion: Dual Role of Deoxyribonucleoside Triphosphate
Deoxyribonucleoside triphosphates (dNTPs) are essential for DNA replication and serve two crucial functions:
- Substrates for DNA Synthesis:
dNTPs are the building blocks of DNA. During replication, DNA polymerases incorporate these nucleotides into the growing DNA strand complementary to the template strand. Each dNTP consists of a deoxyribose sugar, a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine).
- Energy Providers:
The high-energy phosphate bonds in dNTPs release energy when they are cleaved during polymerization. This energy is vital for driving the endothermic reaction of DNA synthesis, making the process energetically favorable.
Reason: The Role of the Replication Fork
The replication fork is a critical structure in the DNA replication process, occurring in a localized area:
- Structure of the Replication Fork:
The replication fork is the Y-shaped region where the double-stranded DNA unwinds, allowing each strand to serve as a template for the synthesis of new complementary strands.
- Localizing Replication:
Within the replication fork, enzymes such as DNA helicase unwind the DNA, while DNA polymerases synthesize new DNA strands. This localized environment facilitates the efficient addition of dNTPs and ensures accurate replication.
- Importance for Long DNA Molecules:
For long DNA molecules, the replication fork allows multiple replication processes to occur simultaneously, enhancing the overall speed and efficiency of DNA replication.
In summary, dNTPs are vital for DNA synthesis as both substrates and energy sources, while the replication fork provides a localized area for the efficient and accurate replication of long DNA molecules.
Deoxyribonucleoside triphosphates (dNTPs) are essential for DNA replication and serve two crucial functions:
- Substrates for DNA Synthesis:
dNTPs are the building blocks of DNA. During replication, DNA polymerases incorporate these nucleotides into the growing DNA strand complementary to the template strand. Each dNTP consists of a deoxyribose sugar, a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine).
- Energy Providers:
The high-energy phosphate bonds in dNTPs release energy when they are cleaved during polymerization. This energy is vital for driving the endothermic reaction of DNA synthesis, making the process energetically favorable.
Reason: The Role of the Replication Fork
The replication fork is a critical structure in the DNA replication process, occurring in a localized area:
- Structure of the Replication Fork:
The replication fork is the Y-shaped region where the double-stranded DNA unwinds, allowing each strand to serve as a template for the synthesis of new complementary strands.
- Localizing Replication:
Within the replication fork, enzymes such as DNA helicase unwind the DNA, while DNA polymerases synthesize new DNA strands. This localized environment facilitates the efficient addition of dNTPs and ensures accurate replication.
- Importance for Long DNA Molecules:
For long DNA molecules, the replication fork allows multiple replication processes to occur simultaneously, enhancing the overall speed and efficiency of DNA replication.
In summary, dNTPs are vital for DNA synthesis as both substrates and energy sources, while the replication fork provides a localized area for the efficient and accurate replication of long DNA molecules.
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Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork?
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Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork?.
Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion: Deoxyribonucleoside triphosphate serve dual purposes, I.e., they act as substrates and provides energy for polymerisation reaction Reason: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork?.
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