BIOC20 LEC 1 + 2 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED LATEST
UPDATE
Viruses are obligate intracellular parasites. What does this mean?
They need to get inside the cell in order to replicate. This is because they must hijack
the host cell metabolic machinery because they do not possess their own
Viruses go from cell to cell or host to host?
Both
T/F
Viruses can spread across species barriers
True
This is called the zoonotic spread
Which forms of life can viruses infect?
All of them - from bacteria to humans
Is the genetic material of a virus DNA or RNA?
One or the other, depending on the type of virus
Can be ss or ds
The genetic material of a virus encodes for proteins that are required for...(3)
, replication + expression of genome
packaging of genome and delivery to more hosts
modifying host structure or fx for better viral replication
Viruses are the ONLY organism that has an RNA genome, all other organisms
have ______ genomes
DNA
A complete virus particle that is OUTSIDE the host cell is called....
a Virion
What does a virion consist of? (3)
A nucleic acid genome
A capsid (protective protein coat)
Sometimes contain a lipid envelope
T/F
Viruses are considered the smallest and simplest forms of life
True
What is the formation of an envelope around a newly replicated viral genome
called?
Encapsidation
T/F
Viruses have a linear genome
FALSE
Viruses have a CIRCULAR genome
The 4 main characteristics for virus classification are...
WITH COMPLETE SOLUTIONS VERIFIED LATEST
UPDATE
Viruses are obligate intracellular parasites. What does this mean?
They need to get inside the cell in order to replicate. This is because they must hijack
the host cell metabolic machinery because they do not possess their own
Viruses go from cell to cell or host to host?
Both
T/F
Viruses can spread across species barriers
True
This is called the zoonotic spread
Which forms of life can viruses infect?
All of them - from bacteria to humans
Is the genetic material of a virus DNA or RNA?
One or the other, depending on the type of virus
Can be ss or ds
The genetic material of a virus encodes for proteins that are required for...(3)
, replication + expression of genome
packaging of genome and delivery to more hosts
modifying host structure or fx for better viral replication
Viruses are the ONLY organism that has an RNA genome, all other organisms
have ______ genomes
DNA
A complete virus particle that is OUTSIDE the host cell is called....
a Virion
What does a virion consist of? (3)
A nucleic acid genome
A capsid (protective protein coat)
Sometimes contain a lipid envelope
T/F
Viruses are considered the smallest and simplest forms of life
True
What is the formation of an envelope around a newly replicated viral genome
called?
Encapsidation
T/F
Viruses have a linear genome
FALSE
Viruses have a CIRCULAR genome
The 4 main characteristics for virus classification are...
