5 Written questions
5 Matching questions
- poly-A tail
- nonsense mutation
- a 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.
- b The modified end of the 3' end of an mRNA molecule consisting of the addition of some 50 to 250 adenine nucleotides.
- c The synthesis of RNA on a DNA template.
- 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 three-nucleotide sequence of DNA or mRNA that specifies a particular amino acid or termination signal; the basic unit of the genetic code.
5 Multiple choice questions
- One of a ribosome's three binding sites for tRNA during translation. The place where discharged tRNAs leave the ribosome.
- 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.
- A rare change in the DNA of a gene, ultimately creating genetic diversity.
- The synthesis of a polypeptide using the genetic information encoded in an mRNA molecule. There is a change of languagefrom nucleotides to amino acids
- A chemical or physical agent that interacts with DNA and causes a mutation.
5 True/False questions
frameshift mutation → A change in a gene at a single nucleotide pair
trans- → opposite ex: anticodon
primary transcript → An initial RNA transcript; also called pre-mRNA when transcribed from a protein-coding gene
TATA box → A rare change in the DNA of a gene, ultimately creating genetic diversity.
RNA processing → Modification of RNA before it leaves the nucleus, a process unique to eukaryotes.