* Your answer is incorrect. Which of the following sites can be used to regulate gene expression in eukaryotes? RNA transport to the cytoplasmic membrane rRNA degradation RNA splicing tRNA capping
3. Your answer is incorrect. What sites do eukaryotes have for gene regulation that are not found in prokaryotes? Select all that apply. Nucleus and cytoplasm Operons Poly(A) tails Ribosomes Histones
When E. coli in added to a medium with lactose and no glucose, what happens to the repressor system of the lac operon? 1. The lac repressor is inactivated 2. Transcription of the lac operon genes into a single mRNA 3. -galactosidase and lac permease are synthesized 4. Lactose is rapidly metabolized by enzymes and 4 2,3 and 4 1,3 and 4 1.2 and 3
DNA (Select all that apply) is a double stranded molecule. is used as a template to synthesize proteins. contains the hereditary information of a cell. contains all bases A, T, C and .
Which of the following are found as part of an operon? Select all that apply. Structural genes operator promoter intron ribosome
Sexpili are to conjugation as is/are to transduction. bacteriophages plasmids genes the host chromosome
The anticodon of tRNA interacts with the
codon on mRNA. amino acid. backbone on rRNA. ATP for reaction energetics.
A microbiologist designs an experiment to transfer a gene from a pathogenic bacterium into a laboratory strain of Escherichia coll to discover whether the gene confers virulence. One method for transferring the gene into E. coll would be to use a ligase reaction. restriction digestion. polymerase chain reaction. cloning vector. sequencing reaction.
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