Which of the following are the functions of RNA?
It is carrier of genetic information from DNA to ribosomes synthesising polypeptides
It carries amino acids to ribosomes
It is a constituent component of ribosomes
All of the above
While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were Adenine $=29 \%$, Guanine $=17 \%$, Cytosine $=32 \%$, Thymine $=17 \%$. Considering the Chargaffs rule it can be concluded that
it is a double-stranded circular DNA
it is single-stranded DNA
it is a double-stranded linear DNA
No conclusion can be drawn
In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called
A-DNA
B-DNA
cDNA
$r$ DNA
If Meselson and Stahl's experiment is continued for four generations in bacteria, the ratio of $15_{\mathrm{N}} / 15_{\mathrm{N}}: 15_{\mathrm{N}} / 14_{\mathrm{N}}: 14_{\mathrm{N}} / 14_{\mathrm{N}}$ containing DNA in the fourth generation would be
$1: 1: 0$
$1: 4: 0$
$0: 1: 3$
$0: 1: 7$
If the sequence of nitrogen bases of the coding strand of DNA in a transcription unit is
$$ 5^{\prime} \text { - A T G A A T G - 3', } $$
the sequence of bases in its RNA transcript would be
$5^{\prime}-\mathrm{A} \cup \mathrm{GAA} \cup \mathrm{G}-3^{\prime}$
$5^{\prime}-\cup \mathrm{A} \subset \cup \cup \mathrm{A} \mathrm{C}-3^{\prime}$
$5^{\prime}-\mathrm{C} \mathrm{A} \cup \cup \mathrm{C} \mathrm{A} \cup-3^{\prime}$
$5^{\prime}-\mathrm{G} \cup \mathrm{A} A \mathrm{G} \cup \mathrm{A}-3^{\prime}$