Which of the following is NOT completed before mRNA is expor

Which of the following is NOT completed before mRNA is exported from the nucleus?

Select one:

a. splicing out introns

b. transcription

c. addition of 5\' cap and poly A tail

d. translation

Where does synthesis of transcription factor proteins occur?

Select one:

a. nucleus

b. cytoplasm

c. both the nucleus and cytoplasm

d. neither the nucleus or cytoplasm

Which of the following would prevent the production of both RNA and protein of a particular gene?

Select one:

a. mutation of the ribosome binding sit

b. mutation that creates a stop codon

c. mutation of the start codon

d. mutation of the promoter sequences

To what do transcription factors bind?

Select one:

a. promoter region of RNA

b. DNA polymerase

c. start codons

d. promoter region of DNA

Solution

Answer d:In translation m RNA is decoded by ribosome outside the nucleus for amino acid synthesis hence answer d is correct. Answer c:Transcription factor are transcribed in nucleus but translated in cytoplasm Answer c: Mutation at start codon means nil protein synthesis Answer d: Transcription factor are the diverse family of protein binds directly to promoter region of DNA which lie upstream of coding region in a gene or directly to RNA polymerase