Gene Expression
Where does the expression of a protein begin?
In the nucleus.
The primary transcript is _________ to the DNA template strand.
Complementary and antiparallel
Where would you expect to find unprocessed RNAs?
in the nucleus
Where would you find the large and small ribosomal subunits separately and not together as a complex?
in both the nucleus and the cytoplasm
In which process does the spliceosome play a role?
formation of the mature transcript
Does protein expression begin with transcription or translation?
Transcription
Which one of the following mRNA processing events do not occur in the nucleus of human cells?
A. 5' cap addition
B.excision of introns
C.poly-A tail addition
D.splicing of exons
E. None of the above are correct. All of the processing events described above occur in the nucleus of human cells.
None of the above are correct. All of the processing events described above occur in the nucleus of human cells.
Transcription makes what kind of RNA?
tRNA, rRNA, mRNA, and miRNA are all made by transcription.
Where would you find the large and small ribosomal subunits together as a complex?
in the cytoplasm
In which of the following compartments of a eukaryotic cell would an inhibitor of tRNA synthetase have its greatest effect?
in the cytoplasm
Which of the following reads the nucleotide sequence of a gene and synthesizes the corresponding primary transcript?
RNA polymerase
True or False: mature mRNAs are exported through a nuclear pore complex in a linear fashion, and remain linear throughout the process of translation.
False
What enzyme is responsible for the transcription of tRNA genes?
RNA polymerase
In eukaryotes, where do translation initiation factors bind?
5' cap
Where does transcription start?
at the 3’ end of the template strand
Which of the following types of RNA molecule delivers amino acids to the ribosomes?
transfer RNA
The protein shown being synthesized during the animation is:
Actin
During transcription, which end of the new RNA molecule protrudes from the RNA polymerase?
the 5' end
Which of the following is NOT completed before mRNA is exported from the nucleus?
Translation
To what do transcription factors bind?
promoter region of DNA
Non-protein coding genes are typically found in:
the nucleolus
RNA polymerase initially binds at the:
Promoter
During translation, which end of the new polypeptide protrudes from the large subunit of the ribosome?
the amino end
Where does the synthesis of transcription factor proteins occur?
Cytoplasm
RNA GCAGCC
DNA 5' GCGCGTCGGTACA 3'
Above is a DNA template and the RNA sequence that is being transcribed. What base will be added next to the growing RNA molecule?
Cytosine