5 Written Questions
5 Matching Questions
- nonsense mutation
- a A complex assembly that interacts with the ends of an RNA intron in splicing RNA, releasing the intron and joining the two adjacent exons.
- b In prokaryotes, a special sequence of nucleotides in DNA that marks the end of a gene. It signals RNA polymerase to release the newly made RNA molecule, which then departs from the gene.
- c across ex:transcription
- d A mutation that changes an amino acid codon to one of the three stop codons, resulting in a shorter and usually nonfunctional protein
- e A mutation involving the addition of one or more nucleotide pairs to a gene.
5 Multiple Choice Questions
- A chemical or physical agent that interacts with DNA and causes a mutation.
- The DNA strand that provides the template for ordering the sequence of nucleotides in an RNA transcript.
- A three-nucleotide sequence of DNA or mRNA that specifies a particular amino acid or termination signal; the basic unit of the genetic code.
- The synthesis of RNA on a DNA template.
- The synthesis of a polypeptide using the genetic information encoded in an mRNA molecule. There is a change of languagefrom nucleotides to amino acids
5 True/False Questions
A site → One of a ribosome's three binding sites for tRNA during translation. Holds the tRNA carrying the growing polypeptide chain. (P stands for peptidyl tRNA
exo- → out, outside, without
frameshift mutation → A mutation occurring when the number of nucleotides inserted or deleted is not a multiple of three, resulting in the improper grouping of the following nucleotides into codons.
transfer RNA (tRNA) → A type of RNA, synthesized from DNA, that attaches to ribosomes in the cytoplasm and specifies the primary structure of a protein.
mutation → A chemical or physical agent that interacts with DNA and causes a mutation.