MIBO exam 3 questions with correct answers

A gene has the codon CGA. According to the table above, which mutation within this codon would be considered a silent mutation? CORRECT ANSWER A----C Which answer below would best explain why thymine is paired with a guanine during DNA synthesis. CORRECT ANSWER DNA polymerase created the error during replication. Question 3 options: If RNA polymerase synthesized a strand of mRNA from the template 3'-TCAAGA-5', the mRNA would be 5'- CORRECT ANSWER AGUUCU 3' During replication, DNA polymerase adds a nucleotide one by one to the _____ group of the growing chain of DNA. CORRECT ANSWER 3'-OH In DNA replication, the start site is the origin of replication. In transcription, the start site is ______ CORRECT ANSWER promoter True or False: If an inducer molecule binds to a repressor protein, transcription decreases. But is an inducer molecule binds to an activator protein, transcription increases. CORRECT ANSWER false How can you tell that LuxO is a repressor in this diagram? CORRECT ANSWER LuxO has an arrow pointing to the operator sequence Translation in both prokaryotes and eukaryotes starts with a specific codon. Which amino acid is associated with the start codon? CORRECT ANSWER Methionine Which of the following processes does NOT require helicase enzyme? CORRECT ANSWER transcription and translation Select the one statement that is correct about sigma factors: CORRECT ANSWER they bind to RNA polymerase Which of the following genetic mutations would have the smallest chance of changing the function of a gene product? CORRECT ANSWER single nucleotide silent mutation