Podcast
Questions and Answers
Viruses are living cells.
Viruses are living cells.
False (B)
What are the two main components of a virus's basic structure?
What are the two main components of a virus's basic structure?
A protein coat and a nucleic acid core
What is the difference between DNA viruses and RNA viruses in terms of mutation rates?
What is the difference between DNA viruses and RNA viruses in terms of mutation rates?
- DNA viruses are stable, RNA viruses mutate rapidly. (correct)
- DNA viruses mutate rapidly, RNA viruses are stable.
- Both DNA and RNA viruses mutate at the same rate.
- There is no difference in their mutation rates.
The process of viral reproduction is referred to as the ______ cycle.
The process of viral reproduction is referred to as the ______ cycle.
Describe the steps involved in the lytic cycle.
Describe the steps involved in the lytic cycle.
What types of cells can viruses attack?
What types of cells can viruses attack?
Flashcards
String
String
A sequence of characters, often used to represent text.
Scalar
Scalar
A data type that represents a single value, such as a number or a character.
Array
Array
A data structure that stores a collection of elements, typically in a specific order.
Dictionary
Dictionary
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Algorithm
Algorithm
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Dynamic
Dynamic
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Application (App)
Application (App)
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Syntax
Syntax
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Interpreted Language
Interpreted Language
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Compiled language
Compiled language
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Study Notes
Viruses: Dead or Alive?
- Viruses are not cells.
- Viruses have a basic structure:
- Protein coat (highly antigenic)
- Nucleic acid core (RNA or DNA)
- Lipoprotein coat (only in enveloped viruses)
Virus Categories
- DNA viruses are stable and do not mutate rapidly.
- Examples: Smallpox, Hepatitis B
- RNA viruses mutate rapidly and are unstable.
- Examples: HIV, Rhinovirus
Are Viruses Alive?
- Viruses exhibit only one characteristic of life: reproduction.
- Viruses can only reproduce inside a host cell.
- The process of viral reproduction is called the lytic cycle.
Lytic Cycle
- A virus attaches to the host cell's membrane and injects its nucleic acid.
- The viral nucleic acid takes over the host cell's protein synthesis, creating new viruses.
- The host cell bursts, releasing newly formed viruses.
Cells Subject to Viral Attack
- Viruses can attack animal cells, plant cells, bacterial cells, and human cells.
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