5 Written questions
5 Matching questions
- messenger RNA (mRNA)
- poly-A tail
- P site
- transfer RNA (tRNA)
- a An RNA molecule that functions as an interpreter between nucleic acid and protein language by picking up specific amino acids and recognizing the appropriate codons in the mRNA.
- b A type of RNA, synthesized from DNA, that attaches to ribosomes in the cytoplasm and specifies the primary structure of a protein.
- c opposite ex: anticodon
- d The modified end of the 3' end of an mRNA molecule consisting of the addition of some 50 to 250 adenine nucleotides.
- e 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
5 Multiple choice questions
- A change in a gene at a single nucleotide pair
- One of a ribosome's three binding sites for tRNA during translation. The place where discharged tRNAs leave the ribosome.
- The premise that a gene is a segment of DNA that codes for one polypeptide.
- 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
RNA processing → The removal of noncoding portions (introns) of the RNA molecule after initial synthesis.
deletion → 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.
base-pair substitution → A type of point mutation; the replacement of one nucleotide and its partner in the complementary DNA strand by another pair of nucleotides.
A site → One of a ribosome's three binding sites for tRNA during translation. The place where discharged tRNAs leave the ribosome.
5' cap → The end of a pre-mRNA molecule modified by the addition of a cap