Molecular Basis of Inheritance

Multiple Choice Questions

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During translation initiation in prokaryotes, a GTP molecule is needed in

  • association of 30S, mRNA with formyl-met-tRNA

  • association of 50S subunit of ribosome with initiation complex

  • formation of formyl-met-tRNA

  • binding of 30S subunit of ribosome with mRNA

A.

association of 30S, mRNA with formyl-met-tRNA

During the process of translation, an initial complex is formed between mRNA, 30S ribosomal subunit and methionyl tRNA. This complex is formed due to association of IF1, IF2 and IF3 initiation factors and GTP molecule.

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    DNA is specific because it has

    • number of nucleotides

    • specific nature of phosphate and sugar

    • arrangement of protein in DNA

    • specific nature of purine and pyrimidines

    Answer

    Role of carbohydrate in protoplasm

    • as catalyst

    • for energy

    • as enzymes

    • for synthesis

    Answer

    The RNA found in eukaryotic ribosomes are

    • 5 S and 16 S RNA

    • 5 S, 16 S, 18 S RNA

    • 23S, 16 S, RNA

    • 5 S and 28 S RNA

    Answer

    Which one of the following codons codes for the some information as UGC?

    • UGU

    • UGA

    • UAG

    • UGG

    Answer
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    In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids?

    • 61

    • 60

    • 20

    • 64

    Answer

    Ribosomal RNA (rRNA) is synthesized in

    • nucleolus

    • nucleosome

    • cytoplasm

    • ribosome

    Answer

    The number of RNA molecules in 60S sub- particles of 80S ribosomes are

    • five 

    • four

    • three

    • two

    Answer

    Stop codons are

    • AUG, GUG

    • UAA, UGA, UAG

    • UAC, UGG

    • AGU, AGA, UAC

    Answer
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    DNA multiplication is called

    • translation

    • replication

    • transduction

    • transcription

    Answer
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