5 Written questions
5 Matching questions
- nonsense mutation
- frameshift mutation
- TATA box
- a A promoter DNA sequence crucial in forming the transcription initiation complex.
- b opposite ex: anticodon
- c A noncoding, intervening sequence within a eukaryotic gene.
- d 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.
- e A mutation that changes an amino acid codon to one of the three stop codons, resulting in a shorter and usually nonfunctional protein
5 Multiple choice questions
- within ex: intron
- 1) A deficiency in a chromosome resulting from the loss of a fragment through breakage. (2) A mutational loss of one or more nucleotide pairs from a gene.
- A type of RNA, synthesized from DNA, that attaches to ribosomes in the cytoplasm and specifies the primary structure of a protein.
- One of a ribosome's three binding sites for tRNA during translation. The place where discharged tRNAs leave the ribosome.
- The most common type of mutation, a base-pair substitution in which the new codon makes sense in that it still codes for an amino acid.
5 True/False questions
promoter → 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
RNA processing → The removal of noncoding portions (introns) of the RNA molecule after initial synthesis.
ribosome → An enzymatic RNA molecule that catalyzes reactions during RNA splicing.
ribozyme → A cell organelle constructed in the nucleolus and functioning as the site of protein synthesis in the cytoplasm; consists of rRNA and protein molecules, which make up two subunits.
poly- → A three-nucleotide sequence of DNA or mRNA that specifies a particular amino acid or termination signal; the basic unit of the genetic code.