MBC3023 Test 3 Questions With Complete Solutions
________ are genetic elements that replicate separately from the
chromosome Correct Answers Plasmids
A concatemere is a: Correct Answers Combination of two or
more repeated nucleotide sequences covalently lunked together
A helical shaped virus that can infect tomato plants is: Correct
Answers Tabacco Mosaic virus
A prophage replicates: Correct Answers along with its host
while the lytic genes are not expressed.
A virus that kills its host is said to be: Correct Answers lytic or
virulent
Adenine and guanine are classified as ________, whereas
cytosine and thymine are classified as ________. Correct
Answers purines/pyrimidines
An operon is: Correct Answers A gene cluster transcribed as a
single mRNA
Animal virus infection typically occurs by: Correct Answers
The virion fusing with the cytoplasmic membrane or
endocytosis
Blocking polyomavirus SV40's ability to integrate its genome
into host cells would Correct Answers avoid cancer
development from the virus
, Capsules are particularly important for: Correct Answers
protecting bacteria from host defense mechanisms.
DNA replication always proceeds in only one direction because
the ____ attached to the free ____ of the growing DNA strand
Correct Answers 5'-Phosphate/ 3'-hydroxyl
During translation, a (3-nucleotide) codon in a mRNA transcript
is recognized by a(n) ________ that carries with it the
corresponding amino acid. Correct Answers tRNA anticodon
Genes that encoded for polymerases, gyrases, ribosomal
proteins, and other proteins essential to replication, transcription,
and translation are present on Correct Answers Chromosomes
How are plasmids different than chromosomes? Correct
Answers Plasmids contain genes that are NOT essential for
cellular growth and replication.
How is a virion distinguished from a virus? Correct Answers A
virion is always outside of the host cell
If lambda phage were unable to express the Cro repressor
protein, what would happen? Correct Answers It would never
enter the lytic pathway
In all cells genes are composed of: Correct Answers nucleic
acids
________ are genetic elements that replicate separately from the
chromosome Correct Answers Plasmids
A concatemere is a: Correct Answers Combination of two or
more repeated nucleotide sequences covalently lunked together
A helical shaped virus that can infect tomato plants is: Correct
Answers Tabacco Mosaic virus
A prophage replicates: Correct Answers along with its host
while the lytic genes are not expressed.
A virus that kills its host is said to be: Correct Answers lytic or
virulent
Adenine and guanine are classified as ________, whereas
cytosine and thymine are classified as ________. Correct
Answers purines/pyrimidines
An operon is: Correct Answers A gene cluster transcribed as a
single mRNA
Animal virus infection typically occurs by: Correct Answers
The virion fusing with the cytoplasmic membrane or
endocytosis
Blocking polyomavirus SV40's ability to integrate its genome
into host cells would Correct Answers avoid cancer
development from the virus
, Capsules are particularly important for: Correct Answers
protecting bacteria from host defense mechanisms.
DNA replication always proceeds in only one direction because
the ____ attached to the free ____ of the growing DNA strand
Correct Answers 5'-Phosphate/ 3'-hydroxyl
During translation, a (3-nucleotide) codon in a mRNA transcript
is recognized by a(n) ________ that carries with it the
corresponding amino acid. Correct Answers tRNA anticodon
Genes that encoded for polymerases, gyrases, ribosomal
proteins, and other proteins essential to replication, transcription,
and translation are present on Correct Answers Chromosomes
How are plasmids different than chromosomes? Correct
Answers Plasmids contain genes that are NOT essential for
cellular growth and replication.
How is a virion distinguished from a virus? Correct Answers A
virion is always outside of the host cell
If lambda phage were unable to express the Cro repressor
protein, what would happen? Correct Answers It would never
enter the lytic pathway
In all cells genes are composed of: Correct Answers nucleic
acids
