The statement \"The amino acid sequence of a protein determines the 3D structure

Question

The statement "The amino acid sequence of a protein determines the 3D structure of the protein" has had to be modified. One example of this necessary modification is the folding of prion proteins. A. True B. False A mutation that changes an amino acid codon to a stop codon and therefore makes a shorter polypeptide is known as a A. silent mutation B. missense mutation C. nonsense mutation D. frameshift mutation. The Lederberg experiment looked at mutations which involved antibiotic resistance. A. True B. False Proofreading during DNA replication occurs due to the action of the following enzyme: A. DNA helicase B. Primase C. DNA polymerase III D. ligase What is the specific mode of action of the enzyme you chose in #39 that allows for proofreading? A. 5' to 3' exonuclease B. 3' to 5' exonuclease C. digestion of RNA primers D. All of the above. E. None of the above. Germ line mutations affect the survival of an individual and are not passed to the next generation. A. True B. False One of Benzer's conclusions from his recombination analysis was that a gene is a linear arrangement of nucleotides. A. True B. False Only bacteria produce thymine dimers after sufficient exposure to UV light. A. True B. False

Explanation / Answer

39. A mutation that changes an amino acid codon to a stop codon and therefore makes a shorter polypeptide is known.

C. Nonsense mutation

Because it is the only mutation in which the sense codon will be specified by the genetic code and then changed into a stop codon and that will result in premature stop codon in dna.

40. The Lederberg experiment looked at mutation which involved antibiotic resistance.

A. True

Because the main reason for this experiment was that an antibiotic resistant strains of bacteria surviving an application of antibiotics had the resistance before their exposure to the antibiotics, not as a result of the exposure. So the experiment looked at the mutation that involved antibiotic resistance.

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