Shared Flashcard Set

Details

Science Chapter 2 Sections 2 and 3
notes
20
History
7th Grade
09/13/2011

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Cards

Term
What is resulted from many scientists observations and conclusions?
Definition
Cell Theory
Term
What is composed of one or more cell?
Definition
organisms
Term
What is a virus?
Definition
nonliving strand of hereditary material surrounded by a protein coating
Term
What is it called when viruses make copies of themselves only inside a living host cell?
Definition
virus multiplication
Term
What is and Active Virus?
Definition
makes the host cell produce new viruses, which kills the host cell
Term
What kind of virus hides in the host cell without destroying it?
Definition
latent virus
Term
What kind of hereditary material becomes part of the host cell's hereditary material?
Definition
Virus Hereditary Material
Term
What kind of viruses can become active and then destroy the host cells?
Definition
Latent
Term
Most viruses do what?
Definition
infect only specific kinds of cells
Term
How are the viruses carried to the host cell?
Definition
through the air
Term
How can a virus and a host cell form a viral infection?
Definition
by fitting together perfectly
Term
What attaches to bacteria and injects their hereditary material?
Definition
Bacteriophages
Term
What are vaccines?
Definition
weakened virus particles which allows the host to fight some diseases
Term
What is not effective treatments for viral infections?
Definition
Antibiotics
Term
What do infected cells sometime produce?
Definition
interferons
Term
What are interferons?
Definition
proteins that can protect noninfected cells that can protect noninfected cells
Term
What often has adverse side effects limiting their use?
Definition
Anti-Viral drugs
Term
What can prevent or slow desease spread?
Definition
Public Health measures
Term
What is: Gene thereapy uses viruses to replace defective cell hereditary material with normal cell hereditary material?
Definition
Research with viruses
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