Which three codons what code for a different amino acid sequence from that coded for by the mRNA base sequence AGU-UCA-CCA A. AGU-UCC-CCG B. AGU-UCG-CCC C. AGC-UCA-CCU D. AGC-UCU-CCU

Hypertrophic cardiomyopathy is caused by mutations in the β-myosin heavy chain gene. One common mutation involves a change of an arginine (Arg) to a glutamine (Gln) at position 403.     Using the genetic code shown above, what could the sequence of the mutant codon be?   a. CAA   b. CGA   c. CGG   d. CAC

Now imagine that a mutation occurred in the g of the codon below and the G became a C. How would this affect the mRNA and the amino acid for that codon? Old DNA codon Old RNA codon Old amino acid New DNA codon New mRNA codon New amino acid A  T  G     A  T  C       This would be an example of which type of a point mutation?__________________________

30. What protein that uses GTP for an energy source is a main regulator of nuclear import of proteins? A. Ran B. Bip C. TOC D. clathrin 31. What type of protein helps other proteins fold properly? A. cold shock B. chaperones C. guardians D. helicases 32. What would likely happen if a protein repeatedly fails to fold properly? A. UPR B. Ran C. TIC D. TOM 33. An integral membrane protein would generally need a membrane. A. UPR B. Bip C. stop-transfer sequence D. proteosome 34. What sequence of amino acids does a protein need to be able to enter the nucleus? A. nuclear export sequence A B. nuclear localization signal C. signal recognition particle D. all of the above 9:18 35. Which proteins are involved in import of proteins into the chloroplast? A. TIM and TOM B. TIC and TOC C. BiP and UPR D. Ran and Rab 36. How is insulin made, as discussed in class? A. Extra amino acids are added to the final polypeptide. B. Some amino acids are cut out of the final polypeptide C. All serines are…