Nucleic Acid L4

Which of the following is not a characteristic of RNA?

• It has ribose sugar molecules in the nucleotides

• It is a single stranded molecule

• It is not stable under alkaline conditions

• All the 3 types of RNA are involved in protein synthesis

MicroRNAs are ________ nt in length

• 10-12

• 20-24

• 30-34

• >100

Which of the following is coding RNA?

• miRNA

• siRNA

• mRNA

• lncRNA

What is the average size (in bp) of a mature t-RNA?

• 80 bp

• 150 bp

• 190 bp

• 200 bp

Which type of RNA is most abundant in cell?

• mRNA

• rRNA

• tRNA

• snoRNA

What is "transforming principle"?

The final proof as DNA as genetic material came from the experiment of

• Fred Griffith

• Hershey and chase

• Avery, Mcleod, & McCarty

• Hargovind khorana

 

In Hershey Chase exp.,Protein tagging was done by-

• Radioactive Phosphorus P37

• Radioactive sulphur S 34

• Radioactive sulphur 35 S

• Radioactive Phosphorus 32 P

 

In Blender exp.,DNA tagging was done by

• Radioactive phosphorus P 37

• Radioactive sulphur S 34

• Radioactive sulphur S 35

• Radioactive Phosphorus 32 P

tRNA is synthesized by

• RNA polymerase I

• RNA polymerase II

• RNA polymerase III

• Ribozyme