Question

The segment of DNA which acts as the instrumental manual for the synthesis of the protein is

• A. Nucleotide
• B. Ribose
• C. Gene
• D. Nucleoside

Answer 1

The Correct Option is C

The question asks about the segment of DNA that acts as the instrumental manual for the synthesis of proteins. To determine the correct answer, we need to understand the fundamental roles and characteristics of the options provided:

1. Nucleotide: Nucleotides are the basic units of DNA and RNA. They consist of a phosphate group, a sugar (deoxyribose in DNA), and a nitrogenous base. While nucleotides are the building blocks of nucleic acids, they do not directly encode the synthesis of proteins.
2. Ribose: Ribose is a sugar molecule that is part of the backbone of RNA. In DNA, the sugar is deoxyribose. Ribose itself does not carry genetic information or instructions for protein synthesis.
3. Gene: A gene is a segment of DNA that contains the necessary information to produce a functional product, typically a protein. Genes are the specific sequences of nucleotides that encode the instructions for the synthesis of proteins, thereby directly acting as a manual for protein synthesis.
4. Nucleoside: Nucleosides are similar to nucleotides but lack the phosphate group. Like nucleotides, nucleosides do not directly encode protein synthesis.

Based on the explanations above, the term that best describes the segment of DNA which acts as the instrumental manual for the synthesis of proteins is a gene.

Conclusion: The correct answer is Gene, as it is the segment of DNA that encodes the necessary information for protein synthesis, making it the 'manual' for protein production.