Unit 2 Quizzes Flashcards
Which of the following represents the flow of information within a cell?
DNA > RNA > protein
The molecule that seals the gaps between the pieces of DNA in the lagging strand is ___________________.
DNA ligase
During transcription, RNA polymerase moves along the strand of DNA in which direction?
5’ to 3’
Which of the following build(s) new strands of DNA?
DNA polymerase
Transcription produces which of the following?
mRNA
What results from the process of translation?
a polypeptide
How is bacterial translation different from eukaryotic translation?
Bacteria can begin translation before transcription has terminated.
Quorum sensing allows bacterial cells to…
engage in processes in a synchronous fashion.
create biofilms
deploy virulence mechanisms.
Our human microbiota…
a. Educate our immune system
b. help us digest food
c. synthesize our vitamins
In translation, which of the following act(s) as a decoder, reading mRNA codons and bringing the correct amino acid to the ribosome?`
tRNA
A nucleotide base-pair substitution that changes an amino acid codon into a “stop” codon is a …
nonsense mutation
What is the hallmark of all horizontal gene transfers?
Transfer of DNA between organisms of the same generation
Which of the following is not a mechanism of genetic transfer between cells?
transcription
When a transducing particle binds to and injects bacterial DNA into a recipient cell,
the DNA from the donor cell can recombine with the recipient host chromosome.
The Lac Operon is…
an inducible operon
