Microbiology ch6 test 2 QUESTIONS AND ANSWERS 100%
ACCURATE 2025.
Virus - ✅✅noncellular particles with a definite size, shape, and chemical composition
Microbes - ✅✅viruses are considered the most abundant ______ on earth
<0.2 um - ✅✅size range of viruses
Capsids - ✅✅all viruses have this, protein coats that enclose and protect their nucleic
acid
Nucelocapsid - ✅✅the capsid together with the nucleic acid
Envelope - ✅✅mostly animal, virus with an external covering, those without are
Naked
Capsomers - ✅✅each capsid is made of identical protein subunits called _______
Helical & Icosahedral - ✅✅the two structural capsid types
Helical - ✅✅continuous helix of capsomers forming a cylindrical nucleocapsid
Icosahedral - ✅✅20 sided capsid with 12
Spikes - ✅✅exposed proteins on the outside of the envelope, Essential for
attachment of virus to host cell
Poxiviruses - ✅✅lack a typical capsid and are covered by a dense layer of
lipoproteins
Viral genome - ✅✅either DNA or RNa but never both
Positive-sense RNA - ✅✅ssRNA genomes ready for immediate translation
Negative-sense RNA - ✅✅ssRNA genomes that must be converted into proper form
Preformed Enzymes - ✅✅polymerases, replicases, reverse transcriptase
ACCURATE 2025.
Virus - ✅✅noncellular particles with a definite size, shape, and chemical composition
Microbes - ✅✅viruses are considered the most abundant ______ on earth
<0.2 um - ✅✅size range of viruses
Capsids - ✅✅all viruses have this, protein coats that enclose and protect their nucleic
acid
Nucelocapsid - ✅✅the capsid together with the nucleic acid
Envelope - ✅✅mostly animal, virus with an external covering, those without are
Naked
Capsomers - ✅✅each capsid is made of identical protein subunits called _______
Helical & Icosahedral - ✅✅the two structural capsid types
Helical - ✅✅continuous helix of capsomers forming a cylindrical nucleocapsid
Icosahedral - ✅✅20 sided capsid with 12
Spikes - ✅✅exposed proteins on the outside of the envelope, Essential for
attachment of virus to host cell
Poxiviruses - ✅✅lack a typical capsid and are covered by a dense layer of
lipoproteins
Viral genome - ✅✅either DNA or RNa but never both
Positive-sense RNA - ✅✅ssRNA genomes ready for immediate translation
Negative-sense RNA - ✅✅ssRNA genomes that must be converted into proper form
Preformed Enzymes - ✅✅polymerases, replicases, reverse transcriptase
