3/25 transcription and rna processing

RNA processing includes:

• mRNA 5′- and 3′-end processing

• mRNA can always perform its function

• mRNA 5′- and 3′-end processing, intron splicing

• intron splicing

What is the poly A tail?

•  a long chain of cytosine nucleotides

•  a long chain of thymie nucleotides

•  a long chain of adenine nucleotides

•  a long chain of guamine nucleotides

where can the poly A tail found?

• none of them

• The 5' end

• both of them

• The 3′ end

When mRNA processing occurs, _____________ are removed and ________________ are spliced together to form the final mRNA molecule

• introns; exons

• exons; introns

Which RNA bases would pair with TACGAA in transcription? 

• AUGCUU
• ATGCTT
• GCATCC
• GCAUCC

The production of mature mRNA in eukaryotes involves

• cutting introns out and spicing exons together
• adding the 5' cap
• adding the 3' poly A tail
• all of these are correct

Which process is used to make mRNA from the DNA in the nucleus?

• transcription

• translation

• replication

Where does transcription take place in EUKARYOTIC cells?

• nucleus

• cytoplasm

• ribosome

Which of the following statements is true?

• DNA is single-stranded
• RNA is single-stranded
• DNA contains uracil
• RNA contains deoxyribose

In RNA, Uracil pairs with ______. 

• cytosine
• adenine
• guanine
• thymine