5 Written questions
5 Matching questions
- E site
- A site
- a A rare change in the DNA of a gene, ultimately creating genetic diversity.
- b One of a ribosome's three binding sites for tRNA during translation. Holds the tRNA carrying the next amino acid to be added to the polypeptide chain.
- c within ex: intron
- d One of a ribosome's three binding sites for tRNA during translation. The place where discharged tRNAs leave the ribosome.
- e 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.
5 Multiple choice questions
- A complex assembly that interacts with the ends of an RNA intron in splicing RNA, releasing the intron and joining the two adjacent exons.
- The modified end of the 3' end of an mRNA molecule consisting of the addition of some 50 to 250 adenine nucleotides.
- An initial RNA transcript; also called pre-mRNA when transcribed from a protein-coding gene
- The end of a pre-mRNA molecule modified by the addition of a cap
- A noncoding, intervening sequence within a eukaryotic gene.
5 True/False questions
one gene-one polypeptide hypothesis → An enzyme that links together the growing chain of ribonucleotides during transcription.
ribozyme → An enzymatic RNA molecule that catalyzes reactions during RNA splicing.
-script → write ex: transcription
nonsense mutation → 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.
translation → The synthesis of RNA on a DNA template.