Ten E.coli cells with ${ }^{15} N$ - dsDNA are incubated in medium containing ${ }^{14} N$ nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from $15\,N$ ?
NEET 2022, Medium
Download our app for free and get started
b
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1In a cell, protein synthesis occurs by the linking together of amino acids. The base sequence of $mRNA$ defines the primary structure of proteins becauseView Solution
- 2Out of $64$ codons, $61$ codons code for $20$ types of amino acid. It is calledView Solution
- 3View SolutionThe genetic code is called a degenerate code because
- 4View SolutionmRNA is a polymer of
- 5Which of the following statements about $RNA$ polymerase are correct?View Solution
$i. \;RNA\; polymerase \;I \;transcribes \;rRNAs$.
$ii. \;RNA \;polymerase \;II \;transcribes \;snRNAs.$
$iii. \;RNA \;polymerase \;III \;transcribes \;hnRNA.$
$iv. \;RNA \;polymerase \;II \;transcribes \;hnRNAs.$
- 6Match the codons given incolumn $I$ with their respective amino acids given in column $II$ and choose the correct answer.View Solution
column $I$ (Codons) column $II$ (Amino acids) $(A)$ $UUU$ $(I)$ Serine $(B)$ $GGG$ $(II)$ Methionine $(C)$ $UCU$ $(III)$ Phenylalanine $(D)$ $CCC$ $(IV)$ Glycine $(E)$ $AUG$ $(V)$ Proline - 7The two strands of a double helix model of $DNA$ are held together by hydrogen bonds betweenView Solution
- 8Which one of the following is not applicableto $RNA$ ?View Solution
- 9View SolutionNucleosome consists of
- 10Which of the following nitrogenous bases are common for both $RNA$ and $DNA$?View Solution