How many types of $tRNA$ are there?

Which of the following is the initiation codon?

Which of the following statements is true regarding the genetic code?

The elongation of the polypeptide chain in protein synthesis is terminated by which of the following?

Select the correct statement with respect to the Wobble hypothesis.

Khorana and his colleagues synthesized an $RNA$ molecule with a repeating sequence of $U$ and $G$ nucleotides. The $RNA$ sequence "$UGU\ GUG\ UGU\ GUG$" produced a tetrapeptide with alternating chains of cysteine and valine. The codons for cysteine and valine are, respectively: