Which scientist was awarded the Nobel Prize in $1959$ for the in vitro synthesis of polyribonucleotides?

The most abundant type of $RNA$ in the cell is

$RNA$ shows the following characters $EXCEPT$ . . . . . . .

$RNA$ contains

Which of the following statements is false for $RNA$?
$(i)$ $RNA$ can directly code for the synthesis of proteins
$(ii)$ It is a very common process to synthesize $DNA$ from $RNA$
$(iii)$ $RNA$ is used as genetic material only in humans
$(iv)$ One polynucleotide chain is present in $RNA$

What is the $3D$ structure of a transfer $RNA$ $(tRNA)$ molecule?