Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Which of the following molecules acts as an information source for making proteins?
Deoxyribonucleic acid
Carbohydrates
Ribonucleic acid
Phospholipids
Deoxyribonucleic acid
Deoxyribonucleic acid (DNA) acts as the primary storehouse of genetic information in living organisms. It contains the chemical instructions and code required for synthesizing proteins, which carry out essential cellular functions.
Deoxyribonucleic acid (DNA) acts as the primary storehouse of genetic information in living organisms. It contains the chemical instructions and code required for synthesizing proteins, which carry out essential cellular functions.
Think of DNA as a master blueprint archive stored safely inside a building's central vault (cell nucleus). When a building (protein) needs to be constructed, a working copy (mRNA) is made from the blueprint and sent to the construction site (ribosome) to build the structure.
DNA = Design Network Architecture (contains the design for making proteins).
Central┬аDogma:DNATranscriptionтАЛRNATranslationтАЛProtein тАФ Directional flow of genetic information inside a cell
The genetic code is stored within the sequence of nitrogenous bases (A, T, C, G) in DNA. During gene expression, DNA undergoes transcription to produce messenger RNA (mRNA), which is then translated by ribosomes into a specific linear sequence of amino acids, forming a functional protein.
DNA consists of a double-helix structure discovered by Watson and Crick in 1953.
A gene is a specific segment of DNA that holds the information needed to synthesize a particular protein.
RNA acts as a messenger (mRNA) carrying instructions from DNA to the ribosomes.
Ribosomes read the mRNA codon sequences to assemble amino acids into polypeptide chains.
Genetic engineering and biotechnology (e.g., producing recombinant insulin).
Forensic science via DNA profiling.
Diagnostic medical tests for detecting genetic mutations.
Option B (Carbohydrates): Primary energy sources (e.g., glucose) and structural components (e.g., cellulose), not genetic templates.
Option C (Ribonucleic acid): Acts as a messenger or intermediate carrying instructions from DNA, but the original source is DNA.
Option D (Phospholipids): Primary structural lipids forming cell membranes.
A is correct тАФ Deoxyribonucleic acid (DNA) stores the genetic code and instructions required for cellular protein synthesis.
In NCERT Biology, remember that while DNA is the ultimate master template and source, RNA acts as the immediate template during translation at the ribosome.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants