Answer the Following Sigma Factor of RNA Polymerase Flashcards

What is the role of the sigma factor in transcription?

A sequence of 3 bases on a transferRNA-amino acid complementary to a sequence on the messenger RNA is a(n)...

A molecule that binds to a repressor protein making it to detach from the operator is a(n)

The DNA sequence 3' ATTCGGTAA 5' would encode an RNA sequence of...

Protein synthesis stops when...

Gene transfer in E.coli in which the donor cell posesses a sex pilus

The Ames test assays chemical agents for their ability to cause mutation in a bacterial species and is a rapid screening test for potential ...

Plasmids differ from transposons because plasmids...

All of the following are involved in transcription, except
(a) polymerase (b) primer (c) promoter (d) sigma factor (e) uracil

All of the following are involved in DNA replication, except
(a) elongation factors (b) gyrase (c) polymerase (d) primase (e) primer

All of the following are directly involved in translation except
(a) promoter (b) ribosome (c) start codon (d) stop codon (e) tRNA

Using the DNA strand depicted here as a template, what will the sequence of the RNA transcript?
5' GCGTTAACGTAGGC 3'
3' CGCAATTGCATCCG 5'

A ribosome binds to the following mRNA at the site indicated by the dark box. At which codon will the translation likely begin?
5' [] GCCGGAAUGCUGCUGGC 3'

Allolactose induces the lac regulon by binding to a(n)
(a) operator (b) repressor (c) activator (d) CAP protein

Under which of the following conditions will transcription of the lac operon occur?
(a) Lactose present/glucose present (b) Lactose present/glucose absent (c) Lactose absent/glucose present (d) Lactose absent/glucose absent