Quizzes Flashcards
Which of the following is an example of one codon?
Which of the following is an example of one codon?
GCCATT
CATT
CAG
CCGUAA
CAG
Penetration requires that the entire virus is inserted within the host.
Penetration requires that the entire virus is inserted within the host.
True
False
False
The term “phage” is generally reserved for the viruses that infect
The term “phage” is generally reserved for the viruses that infect
plants.
bacteria.
multiple species.
animals.
bacteria
Herpesviruses can cause all of the following diseases in humans EXCEPT
Herpesviruses can cause all of the following diseases in humans EXCEPT
cold sores.
chicken pox.
spongiform encephalopathy.
cancer.
The correct answer is:
Spongiform encephalopathy
Rest all the infections can be caused by the Herpes virus.
Cold sores are caused by Human Herpes Virus 1(HHV 1).
Chicken pox is caused by Human Herpes virus 3 (HHV 3). also called Varicella zoster virus. Repited infection of this virus also causes skin infection called Shingles.
Cancer is caused by Human herpes Virus 9 (HHv 8) .
Spongiform encephalopathy is not a viral infection by Herpes virus. It is the contagious infection spreading through PRIONS. Missaphen prion proteins spread the infectitious disease.
The flow of biological information begins with
The flow of biological information begins with
mRNA translation.
transcriptional regulation.
RNA transcription.
DNA replication
A) DNA replication.
How is penetration different in animal viruses as compared to bacterial viruses?
How is penetration different in animal viruses as compared to bacterial viruses?
The viral genome penetrates an animal cell, while the entire viral particle penetrates a bacterial cell.
There is no difference; the entire viral particle penetrates both cell types.
The entire viral particle penetrates an animal cell, while only the viral genome penetrates a bacterial cell.
There is no difference; only the viral genome penetrates both cell types.
The entire viral particle penetrates an animal cell, while only the viral genome penetrates a bacterial cell
The process of synthesizing proteins involves translating one “language,” nucleic acid sequences, into another “language,” amino acid sequences. The cellular component that does the actual translating from codons to amino acids is the __________.
The process of synthesizing proteins involves translating one “language,” nucleic acid sequences, into another “language,” amino acid sequences. The cellular component that does the actual translating from codons to amino acids is the __________.
tRNA
RNA polymerase
rRNA
mRNA
tRNA
Influenza vaccines do NOT provide lifelong immunity on account of __________.
Influenza vaccines do NOT provide lifelong immunity on account of __________.
antigenic shift in the neuraminidase and hemagglutinin proteins
antigenic drift in the protein coat of the influenza virus
antigenic drift in the neuraminidase and hemagglutinin proteins
antigenic shift in the protein coat of the influenza virus
antigenic drift in the neuraminidase and hemagglutinin proteins
In all cells, genes are composed of In all cells, genes are composed of chaperones. nucleic acids. mRNA. proteins.
nucleic acids.
A lytic infection results in death of the host cell.
A lytic infection results in death of the host cell.
True
False
T
Stop codons are also called ________ codons.
Stop codons are also called ________ codons.
conversion
release factor
nonsense
degeneracy
nonsense
What are the consequences of a viral infection of an animal cell?
What are the consequences of a viral infection of an animal cell?
Outcomes vary from rapid lysis to persistent infections, latent infections, or cancer.
lysis or lysogeny
lysogeny followed by eventual lysis
rapid lysis or latent infections
Outcomes vary from rapid lysis to persistent infections, latent infections, or cancer.
Why is a special polymerase, such as Taq polymerase, used for PCR?
Why is a special polymerase, such as Taq polymerase, used for PCR?
It is able to add DNA nucleotides without requiring an existing strand to add on to.
It has exceptionally good proofreading ability.
It works at relatively high temperatures.
It can add both DNA and RNA nucleotides
It works at relatively high temperatures.
Taq polymerase is obtained from thermophilic bacterium Thermus aquaticus. This bacterium inhabits in hot springs and able to withstand high temperatures.
The functional unit of genetic information is the
The functional unit of genetic information is the
nucleotide.
gene.
protein.
chromosome.
gene
Termination of RNA synthesis is ultimately determined by
Termination of RNA synthesis is ultimately determined by
terminases.
specific nucleotide sequences on the template strand.
exhaustion of RNA polymerase activity.
special protein factors.
specific nucleotide sequences on the template strand.
