Which of the following would you expect to have the fastest response in the cell? Protein Phosphorylation DNA Methylation RNA Splicing Transcription Repressor

In eukaryotes, which of the following statements is correct with regard to introns and exons? Mature mRNA contains a mix of introns and exons Introns in DNA are removed by spliceosomes Failure to remove introns can lead to production of faulty protein Exons are repeating sequences typically found at the end of a gene Introns are transcribed from promoter sequence

The diagram shows a pre-mRNA before splicing and processing. In this cell type, a protein is present that binds to the 3' splice site of intron 2, such that the spliceosome cannot bind here. What components of this transcript will be retained (and ultimately translated) vs. removed (not translated) in the spliced mRNA? RNA Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 Intron 3 Exon 4 Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 Intron 3 Exon 4 Removed Retained > <

A sequence of MRNA is mutated such that there is no "start" codon. Which of the following is a consequence? O No peptide chain gets built O RNA polymerase is halted O The gene gets copied in an infinite loop O The ribosome can no longer bind

A simplified model of protein synthesis is shown here. How might this model be revised to show a more accurate depiction of protein synthesis? DNA Process 1 m MRNA Process 2

Ribosome is where the Process of translation takes place Process of moving DNA to the cytoplasm takes place Process of transcription takes place Process of copying DNA takes place

X Which process best describes the process of transcription? ODNA strands open and both strands are copied into mRNA. A DNA strand is read and the sugar is replaced to make it mRNA. Ribosomes read the DNA to make copies of tRNA to make protein. DNA strands open and one strand is copied into mRNA. Outside the nucleus, mRNA collects the tRNA amino acids.

Where in a eukaryotic cell is mRNA made?  In the Golgi apparatus In the cytosol In the plasma membrane In the nucleus Both A and D

A mutation that results in a premature (early) stop codon, will terminate transcription resulting in a shorter mRNA. True False

RNA polymerase will attach with what sequence(s) and begin to make RNA? Anticodon Promotor stop codon Major groove