Which of the following is not true of RNA processing? a. Exons are cut out before mRNA leaves the nucleus. b. Nucleotides may be added at both ends of the RNA. c. Ribozymes may function in RNA splicing. d. RNA splicing can be catalyzed by spliceosomes.

Video transcript

Hi everyone here we have a question that says the eukaryotic pre M. RNA undergoes all the following except a splicing to remove introns. This is correct. Be splicing to remove Exxon's. This is incorrect in eukaryotic pre M r N. A. This will Exxon's will be joined, not removed. C addition of five prime cat to the five prime end. This correct de addition of poly a tail to the three prime end. This is correct. So our answer here is be splicing to remove Exxon's. Thank you for watching. Bye.