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the process by which a sequence of DNA nucleotides is used as a template for the synthesis of an RNA molecule
what is transcription?
messenger RNA
transfer RNA
ribosomal RNA
noncoding RNA
what are the major RNA molecules?
to encode the amino sequences of polypeptides
what is the function of mRNA?
read the mRNA and transfer the appropriate amino acid to the polypeptide chain
function of tRNA
forms ribosomes which read mRNA to make proteins
what does rRNA do?
the entire thing
how much of the chromosome is copied?
the sum of all the RNA molecules produced in a cell
what is a transcriptome?
polymerases
RNA is synthesized by ____
DNA template
RNA synthesis requires a _____
5'-3'
is RNA built 3'-5' or 5'-3' ?
3'-5'
the DNA template is copied in which direction? 3'-5' or 5'-3' ?
3'-5'
what type of exonuclease activity does RNA polymerase NOT have (3'-5' or 5'-3')?
1
which, 1 or 2, is the coding strand?
the complementary strand that is identical to the new RNA
what is the coding strand?
2
which is the template strand (1 or 2)?
it serves as the template for RNA synthesis
what is the purpose of the template strand?
RNA polymerase, DNA, and newly forming RNA
what does the transcription bubble contain?
the sequence of DNA needed for the RNA polymerase to recognize the starting point
what is a promoter?
the sequence of the promoter that is common in most DNA and is recognized by the RNA polymerase
what is a consensus sequence?
initiation
elongation
termination
what are the three transcription stages?
eukaryotic
which, prokaryotic or eukaryotic transcription is more complex?
eukaryotic
which, prokaryotic or eukaryotic transcription has several RNA polymerases?
prokaryotes
mRNA maturation does not occur in ... (prokaryotes or eukaryotes?)
5' cap is added
3' poly tail is added
introns are spliced
what occurs during mRNA processing?
eukaryotes
mRNA maturation only occurs in....
protects mRNA from enzymatic destruction
what does the 3' poly tail do?
to protect mRNA from ribonucleases and bind mRNA to ribosome
the function of the 5' cap is....
exon
which, exon or intron, is the coding segment?
both
which, introns or exons, are transcribed by RNA polymerase?
exons
a mature mRNA is only made up of ...
a specific exon may or may not be included into the mature mRNA
what does alternative processing mean?
