BIOD 171 MODULE 6 ESSENTIAL
MICROBIOLOGY COMPREHENSIVE STUDY
SCRIPT VERIFIED QUESTIONS ANSWERS
ACCURATE SOLUTIONS PACK
●● Describe the two basic components of a virus.
Answer: 1. genomic material comprised of either DNA or RNA
2. a capsid: membrane-like protective structure that contains the genetic
material
●● The envelope surrounds the _________ of some viruses.
Answer: capsid
●● True or False. You would expect to see a viral envelope on a virus
infecting a bacterial cell.
Answer: False. The overwhelming majority of animal viruses are
enveloped whereas the majority of plant or bacteria-infecting viruses are
not.
●● Rank the following viruses based on their size from largest to
smallest: Orthomyxovirus
Poliovirus
, Variolavirus
Answer: Variolavirus (~200nm) > Orthomyxovirus (100-150nm) >
Poliovirus (~30nm)
●● True or False: Viral replication occurs after it attaches and enters the
host cell.
Answer: True. The viral genome is never replicated before attachment
and entry.
●● Place the following viral life cycle steps in order beginning with
viral attachment and provide a description of each step.
(AEURRN)
Answer: 1. Attachment: viral receptors bind to the new cell surface
2. Entry: virus combines with host membrane and enters the cell
3. Uncoating: viral capsid disassembles
4. Replication: viral genome makes copies of itself
5. Release: new virus particles are produced and leave the cell
6. New Infection
●● Attachment
Answer: viral receptors bind to the new cell surface
MICROBIOLOGY COMPREHENSIVE STUDY
SCRIPT VERIFIED QUESTIONS ANSWERS
ACCURATE SOLUTIONS PACK
●● Describe the two basic components of a virus.
Answer: 1. genomic material comprised of either DNA or RNA
2. a capsid: membrane-like protective structure that contains the genetic
material
●● The envelope surrounds the _________ of some viruses.
Answer: capsid
●● True or False. You would expect to see a viral envelope on a virus
infecting a bacterial cell.
Answer: False. The overwhelming majority of animal viruses are
enveloped whereas the majority of plant or bacteria-infecting viruses are
not.
●● Rank the following viruses based on their size from largest to
smallest: Orthomyxovirus
Poliovirus
, Variolavirus
Answer: Variolavirus (~200nm) > Orthomyxovirus (100-150nm) >
Poliovirus (~30nm)
●● True or False: Viral replication occurs after it attaches and enters the
host cell.
Answer: True. The viral genome is never replicated before attachment
and entry.
●● Place the following viral life cycle steps in order beginning with
viral attachment and provide a description of each step.
(AEURRN)
Answer: 1. Attachment: viral receptors bind to the new cell surface
2. Entry: virus combines with host membrane and enters the cell
3. Uncoating: viral capsid disassembles
4. Replication: viral genome makes copies of itself
5. Release: new virus particles are produced and leave the cell
6. New Infection
●● Attachment
Answer: viral receptors bind to the new cell surface
