Question

Observe the given figure and answer the questions given below.

Which fraction would probably show the most evidence of synthesis of messenger RNA? Give a reason for your answer

Answer 1

The fraction A was centrifuged at the speed of 600 g. The nucleus gets separated from the other cell organelles when the centrifugation is carried out at the speed of 600-1000 g for 10 minutes. The nucleus is the organelle where the DNA is present. The DNA encodes for the sequences which eventually are transcribed into mRNA and then translated to proteins. The sequences of the genes which are present in the DNA is transcribed with the help of RNA polymerase. This process is known as transcription. The information from the gene on DNA is stored in the mRNA. So, the fraction A shows the evidence of the synthesis of messenger RNA.