Microbiology Final - Barbosa (test 4) Questions And Answers Already Graded A+
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Course
Microbiolog - Barbosa
Institution
Microbiolog - Barbosa
virus's ability to infect an animal cell depends primarily upon the - ️️presence of
receptor sites on the cell membrane
a mutation that inactivates the gene that expresses the repressor of the lac operon
results in - ️️continuous transcription of the structural genes
Continuous cell lin...
Microbiology Final - Barbosa (test 4)
virus's ability to infect an animal cell depends primarily upon the - ✔️✔️presence of
receptor sites on the cell membrane
a mutation that inactivates the gene that expresses the repressor of the lac operon
results in - ✔️✔️continuous transcription of the structural genes
Continuous cell lines differ from primary cell lines in that - ✔️✔️continous cell lines can
be maintained through an indefinite number of generations
which of the following is not a product of transcription? - ✔️✔️a new strand of DNA
If the sequence of amino acids encoded by a strand of DNA is serine-alanine-lysine-
leucine, the coding for the sense strand of DNA is - ✔️✔️3' AGACGTTTCAAT
the anticodon for valine is - ✔️✔️CAA
what type of mutation will occur if the codon UCG is replaced with UCU in the sequence
shown below?
UUA-GCA-AAG-UCG - ✔️✔️silent mutation
Both base substitution and frameshift mutations can result in the formation of premature
stop codons. - ✔️✔️true
in an operon, the switch that controls mRNA synthesis is the promotor, which is a
sequence of bases upstream from the first structural gene - ✔️✔️false
which of the following pairs is mismatched? - ✔️✔️RNA polymerase - makes a
molecule of RNA from an RNA template
which of the following statements is false? - ✔️✔️DNA replication proceeds in only one
direction around the bacterial chromosome
how do all viruses differ from bacteria? - ✔️✔️viruses are not composed of cells
which of the following statements is not true of lysogeny - ✔️✔️it causes lysis of host
cells
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