BSC1010H Word Scramble
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Question | Answer |
What name is given to the process in which a strand of DNA is used as a template for the manufacture of a strand of pre-mRNA? | Transcription |
What name is given to the process in which the information encoded in a strand of mRNA is used to construct a protein? | Translation |
What name is given to the process in which pre-mRNA is edited into mRNA? | RNA processing |
Polypeptides are assembled from ______. | amino acids |
RNA processing converts the RNA transcript into _____. | mRNA |
The direction of synthesis of an RNA transcript is ______. | 5' -> 3' |
What is the process called that converts the genetic information stored in DNA to an RNA copy? | Transcription |
DNA does not store the information to synthesize which of the following? | Organelles |
Transcription begins at a promoter. What is a promoter? | A site in DNA that recruits the RNA Polymerase |
Which of the following statements best describes the promoter of a protein-coding gene? | The promoter is a nontranscribed region of a gene. |
What determines which base is to be added to an RNA strand during transcription? | Base pairing between the DNA template strand and the RNA nucleotides |
Which of the following terms best describes the relationship between the newly synthesized RNA molecule and the DNA template strand? | Complementary |
What happens to RNA polymerase II after it has completed transcription of a gene? | It is free to bind to another promoter and begin transcription |
During RNA processing a(n) _____ is added to the 3' end of the RNA. | a long string of adenine nucleotides |
During RNA processing a(n) _____ is added to the 5' end of the RNA. | modified guanine nucleotide |
Spliceosomes are composed of ______. | snRNPs and other proteins |
The RNA segments joined to one another by spliceosomes are ______. | exons |
Translation occurs in the _____. | cytoplasm |
Where does translation take place? | Ribosome |
Which nucleic acid is translated to make a protein? | mRNA |
Which of the following processes is an example of a post-translational modification? | Phosphorylation |
Which of the following steps occurs last in the initiation phase of translation? | The large ribosomal subunit joins the complex |
At which site do new aminoacyl tRNAs enter the ribosome during elongation | A-site |
What is meant by translocation? | The ribosome slides on codon down the mRNA |
True or false. A tRNA with an anticodon complementary to the stop codon catalyzes the reaction by which translation is terminated. | False |
What enzyme catalyzes the attachment of an amino acid to tRNA? | aminoacyl-tRNA synthetase |
The tRNA anticodon, GAC, is complementary to the mRNA codon with the sequence _____. | CUG |
The initiator tRNA attaches at the ribosome's _____ site. | P |
True or false? A codon is a group of three bases that can specify more than on amino acid. | False |
Which of the following statements about mutations is false? | A knock-out mutation results in a total absence of the mutated protein. |
If a DNA sequence is altered from TAGCTGA to TAGTGA, what kind of mutation has occurred? | Deletion |
Which mutation(s) would not change the remainder of the reading frame of a gene sequence that follows the mutation(s)? | One addition and one deletion mutation |
If the sequence ATGCATGTCAATTGA were mutated such that a base were inserted after the first G and the third T were deleted, how many amino acids would be changed in the mutant protein? | Two |
If a mutated DNA sequence produces a protein that differs in one central amino acid from the normal protein, which of the following kinds of mutations could have occurred? | An addition mutation and a deletion mutation |
For any given gene, what ultimately determines which DNA strand serves as the template strand? | the base sequence of the gene's promoter |
Created by:
lwelch4
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