Evolution was termed "RNA world" due to discovery of

Absence of RNAs in some cells

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Genomic RNA

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RNA enzymes

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Synthesis of proteins by mRNA, tRNA, and rRNA

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Solution

The correct option is C RNA enzymes
Living world’s existence depends on enzymes and on information systems capable of carrying and maintaining the blueprint for these enzymes and capable of self replication and transmission of blueprint generation after generation. Discovery of RNA enzymes, ribozymes, that can catalyze specific reactions and at the same time serve as genetic material led to the existence of “RNA world”. According to “RNA world” hypothesis, a self-replicating RNA or a polymer with similar chemical characteristics might serve as parent of all life on this planet as it has ability reproduce itself across the generations from the origin of life to the present. Correct option is C. Different types of RNAs, namely mRNA, rRNA and tRNA, do not fulfil both requirements of serving as catalyst and genetic material at the same time. Correct answer is C.

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Similar questions

Q. Due to discovery of which of the following in 1980, the evolution was termed as RNA world:

Q. Due to the discovery of which of the following in 1980, the evolution was termed as RNA world?

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Q. Paragraph for below question
नीचे दिए गए प्रश्न के लिए अनुच्छेद

In bacteria, there are three major types of RNA; mRNA, tRNA and rRNA. All three RNAs are needed to synthesize proteins in a cell. The mRNA provides the template, tRNA brings amino acids and reads the genetic code, and rRNAs play structural and catalytic role during translation. Many times translation begins much before the mRNA is fully transcribed.

जीवाणु में आरएनए (RNA) के तीन मुख्य प्रकार - दूत आरएनए (mRNA), अंतरण आरएनए (tRNA) तथा आर आरएनए (rRNA) होते हैं। सभी तीनों आरएनए (RNAs) एक कोशिका में प्रोटीन के संश्लेषण के लिए आवश्यक होते हैं। दूत आरएनए (mRNA) टेम्पलेट प्रदान करता है, अंतरण आरएनए (tRNA) अमीनों अम्ल लाता है एवं आनुवंशिक कोड को पढ़ता है तथा आर आरएनए (rRNAs) अनुवादन के दौरान संरचनात्मक तथा उत्प्रेरकी भूमिका निभाता है। कई बार दूत आरएनए (mRNA) के पूर्ण रूप से अनुलेखित होने से बहुत पहले ही अनुवादन शुरू हो जाता है।

Q. In bacteria, tRNA is synthesized by

प्रश्न - जीवाणु में अंतरण आरएनए (tRNA) किसके द्वारा संश्लेषित होता है?

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