Viruses
Viral Multiplication
Virus Characterization
Acellular Agents
100

Viruses contain either ______ or ______, never both.

DNA or RNA

100
_________ is the first step of the life cycle of Animal Virus.
What is Adsorption?
100

_________ is the areas where the virus-infected cells have been destroyed show up as clear, well-defined patches?

What is (a) plaque?

100

The correct term to describe viral specificity to a host cell receptor?

What is tropism?

200

All viruses have a protein ____, or shell, that surrounds the nucleic acid in the central core.

capsid
200
_________ is when the entire virus is engulfed by the cell and enclosed in a vacuole or vesicle?
What is endocytosis?
200

This symmetry features both icosahedral and helical symmetries.

What is complex?

200
An accurate description of viroids

What are closed, infectious RNAs, which do not encode for proteins?

300
What is the sum total of the genetic information carried by an organism?
genome
300
_________ _________ is defined as a virus-induced damage to the cell that alters its microscopic appearance.
What is Cytopathic effects?
300

Lysogeny is described as

What is the cycle in which the host chromosome carries the bacteriophage DNA is called ______.

300

These are made up of proteins which can misfold and alter the function of normally existing proteins

What are prions?

400

Viruses that consist of only a nucleocapsid are considered ______?

non-enveloped viruses

400
What is some animal viruses enter a host cell and permanently alter its genetic material, leading to cancer. These viruses are termed_______?
What is oncogenic?
400

The part of the viral replication cycle during which the virus can acquire (get) the viral envelope

release

400

These are comprised of a nucleic acid and require a helper virus to assemble.

What is a satellite?
500

What is a fully formed virus that is able to establish an infection in a host cell is often called ______?

What is a virion?

500

What is when viral DNA is incorporated into the DNA of the host?

What is (a) Provirus?

500
_________ is the process when the prophage in a lysogenic cell will be activated and progress directly into viral replication and the lytic cycle.
What is induction?
500

This must be present in order for the toxins of diphtheria, cholera, and botulism to be produced.

What is a bacteriophage?

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