This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
Step 1: Understand the question. The question asks to identify the correct chemical composition of a nucleotide. Step 2: Recall the components of a nucleotide. A nucleotide is the fundamental building block of nucleic acids (DNA and RNA). It is composed of three main parts: • A pentose sugar (a 5-carbon sugar, either deoxyribose or ribose). • A nitrogenous base (adenine, guanine, cytosine, thymine, or uracil). • One or more phosphate groups (derived from phosphoric acid). Step 3: Evaluate the given options. A) 5-C যুক্ত শর্করা + ফসফরিক অ্যাসিড = নিউক্লিওটাইড (5-C sugar + phosphoric acid = nucleotide). This option is missing the nitrogenous base. B) N₂ যুক্ত ক্ষারক + ফসফরিক অ্যাসিড = নিউক্লিওটাইড (N₂ base + phosphoric acid = nucleotide). This option is missing the 5-C sugar. C) 5-C যুক্ত শর্করা + N₂ যুক্ত ক্ষারক = নিউক্লিওটাইড (5-C sugar + N₂ base = nucleotide). This combination forms a nucleoside*, not a nucleotide, as it lacks the phosphate group. D) 5-C যুক্ত শর্করা + N₂ যুক্ত ক্ষারক + ফসফরিক অ্যাসিড = নিউক্লিওটাইড (5-C sugar + N₂ base + phosphoric acid = nucleotide). This option correctly includes all three components: a 5-carbon sugar, a nitrogenous base, and phosphoric acid (phosphate group). Step 4: Conclude the correct option. Based on the definition of a nucleotide, option D is the correct statement. The final answer is D Drop the next question 📸