Exam (elaborations)
MICR 3330 - World of Viruses questions with correct answers.pdf
- Course
- MICR 3033
- Institution
- Oklahoma State University - Oklahoma City
MICR 3330 - World of Viruses questions with correct
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MICR 3330 - World of Viruses questionswith correct answers
The first plant virus discovered - correct answer Tobacco mosaic virus
The first animal virus discovered - correct answer Foot-and-mouth disease
The first human virus discovered - correct answer Yellow fever
Nucleic Acids - correct answer RNA or DNA as the genetic material
Proteins - correct answer Structural and non-structural
Lipids - correct answer For enveloped viruses only; derived from cellular lipid bilayer
Carbohydrate - correct answer In glycoproteins and glycolipids, involved in attachment
to host cells
Components of a non-enveloped virus - correct answer Capsid
CPs
Nucleic acid
Components of an enveloped virus - correct answer Nucleocapsid
Glycoprotein spikes
Nucleic acid
Rigid rod - correct answer Non-flexible, can be broken, common in plant viruses
Filamentous - correct answer Flexible, common in plant viruses
, Types of virus morphology correct answer - Rigid rod
Filamentous
Spherical
Irregular (brick shaped)
Virion - correct answer The complete virus particle
Capsid (coat) - correct answer The protein shell encasing the viral genome
Nucleocapsid - correct answer Nucleic acid + protein, the discrete substructure within
the virion of enveloped viruses
Subunit - correct answer A single, folded polypeptide
Structural subunit - correct answer The basic unit for building capsid/nucleocapsid; may
be a singular subunit of multiple
Envelope - correct answer Lipid membrane enclosing the nucleocapsid
Helical symmetry - correct answer Open structure, unlimited packing capacity for
genome, rod-like and filamentous viruses
Helix pitch equation - correct answer P = μ x p
Pitch of helix = number of structural units per turn of helix x axial rise per subunit
Icosahedral symmetry - correct answer Closed structure, limited genome size, made up
of 20 equilateral triangular faces, 12 pentagonal vertices, 2-, 3-, and 5-fold rotational
symmetry
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