Genetic Information – Microbiology Quiz 1

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What is vertical transfer of genetic information?
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Genetic Information – Microbiology Quiz 1

The key terms of Microbiology Quiz include, Genetic Information.


What is vertical transfer of genetic information?

transfer of genetic information between cells of the same generation

transfer of DNA via pili

When offspring receive genetic information from their parents – correct

transfer of DNA via phage


What is conjugation?

slecting plasmids that contain the gene of interest

transfer of DNA via phage

abosorbing DNA from the environment

the horizontal transfer of DNA via a pillus  – correct

What is reverse transcriptase?

RNA polymerase

an enzyme that uses an RNA template to make DNA  – correct

DNA polymerase

ligase


What is polymerase chain reaction (PCR) used for?

PCR seal nicks in the DNA backbone

make a strand of DNA using an RNA template

PCR transfer DNA into eukaryotic cells

to make many copies of a specific portion of a DNA template  – correct


\How does the presence of lactose induce expression of the Lac operon?

allolactose binds to and inactivates Lac I, the inhibitor protein   – correct

lactose blocks transport of tryptophan

lactose binds to the Lac operator region

it binds to the Lac promoter region


If both glucose and lactose are present in the growth medium, transcription of the Lac operon will not be induced. This is called

cheap lactose

mutation

catabolite repression  – correct

catabolite induction


Why is it to the cell’s advantage for tryptophan to suppress transcription of the Trp operon?

so that it can utilize lactose

to stimulate the synthesis of other amino acids

so the cell won’t waste energy overproducing the amino acid  – correct

all of these


A gene suffers a single base substitution mutation, and the resulting protein has the same length but a different primary structure than the original protein. What kind of mutation was it?

frame shift

nonsense

missense  – correct

silent


What is a mutation?

an inversion

an alteration in the mRNA

an alteration of the primary structure of a protein

a random change in DNA base sequence  – correct


In prokaryotes, which are haploid, all phenotypic variation is due to mutation.

True

False   – correct

Genes that are always expressed are called

Constitutive  – correct

repressible

inducible

indestructable


What do restriction endonucleases do?

repair DNA

copy DNA

cut DNA  – correct

prime DNA replication


What does agarose gel electrophoresis do?

separates DNA fragments by sequence

cuts DNA

transfers DNA to another bacterium

separates DNA fragments by size  – correct


Why do some cloning vectors (plasmids) contain antibiotic resistance genes?

to select for successful clones  – correct

prevent contamination

make the clones stronger

all of these


What is biotechnology?

genetically modified organisms

cutting DNA

genetic recombination

using living things to make a product  – correct


What is transduction?

horizontal DNA transfer via phage  – correct

taking up DNA from the environment

when bacteriophage infect a bacterium

horizontal DNA transfer via pili


What is vertical transfer of genetic information?

transfer of genetic information between cells of the same generation

transfer of DNA via pili

When offspring receive genetic information from their parents – correct

transfer of DNA via phage


What is conjugation?

slecting plasmids that contain the gene of interest

transfer of DNA via phage

abosorbing DNA from the environment

the horizontal transfer of DNA via a pillus  – correct

What is reverse transcriptase?

RNA polymerase

an enzyme that uses an RNA template to make DNA  – correct

DNA polymerase

ligase


What is polymerase chain reaction (PCR) used for?

PCR seal nicks in the DNA backbone

make a strand of DNA using an RNA template

PCR transfer DNA into eukaryotic cells

to make many copies of a specific portion of a DNA template  – correct


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