BIO1124 - Unit 5 Exam Extra Credit.docx - How many distinct...

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How many distinct aminoacyl-tRNA synthetases does each cell make? A. AROUND 1 B. AROUND 20 C. AROUND 60 D. AROUND 120 E. AROUND 180 ANSWER:
What is the function of the poly A tail?
ANSWER: Which sequence of events CORRECTLY describes the initiation and elongation steps of translation in prokaryotic cells? 1-initiator tRNA binds start codon on mRNA 2-small ribosomal subunit binds to mRNA 3-large ribosomal subunit binds 4-tRNA entry and peptidyl transfer reaction 5-translocation of ribosome and release of tRNA
ANSWER: What products of nonstructural genes are never translated?
region of a structural gene contains the information that specifies an amino acid sequence? A. promoter region B. transcribed region C. terminator D. regulatory sequence E. enhancer region
ANSWER: Wild type bread mold can grow in a minimal medium without supplements, while certain mutated
strains can only grow in a minimal medium that is supplemented with specific intermediates. See the figure below for an overview of the arginine biosynthetic pathway. A strain that can grow in a minimal medium containing arginine, but NOT in minimal media containing citrulline nor in minimal media containing ornithine would have a mutation in the gene that encodes for _____. McGraw-Hill Education

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