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Exploring the classification of viruses, this overview delves into their nature, structural properties, and replication mechanisms. It highlights the importance of virus taxonomy in understanding pathogenicity and evolutionary relationships. The Baltimore Classification system is discussed, alongside the categorization of marine viruses, the diversity of RNA viruses, and the systematic classification of plant viruses, emphasizing their significance in agriculture and molecular biology.
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Viruses are microscopic infectious agents that require a host cell to replicate and can infect all types of life
DNA viruses
DNA viruses replicate through a DNA-dependent DNA polymerase
RNA viruses
RNA viruses replicate using an RNA-dependent RNA polymerase
Prions
Prions are infectious proteins that can cause neurodegenerative diseases
Virus taxonomy is essential for understanding the structure, modes of infection, pathogenicity, and evolutionary relationships of viruses
Viruses are classified based on criteria such as nucleic acid type, capsid symmetry, presence of an envelope, size, and mode of replication
Definition of virus families
Virus families are groups of viruses with shared characteristics, indicated by the suffix -viridae
Examples of virus families
Examples of virus families include Retroviridae and Adenoviridae
The Baltimore Classification system organizes viruses into seven classes based on their mechanism of mRNA synthesis and genome type
Marine viruses are classified into groups such as DNA viruses, RNA viruses, and retro-transcribing viruses, each playing specific roles within the marine environment
Characteristics of RNA viruses
RNA viruses are known for their varied structures, replication cycles, and high mutation rates
Baltimore Classification of RNA viruses
RNA viruses are further categorized into groups based on their RNA genome characteristics and replication strategies
Plant viruses are systematically classified according to their nucleic acid type, capsid symmetry, presence or absence of an envelope, and the symptoms they cause in host plants
00
Viruses, which can infect beings like animals and plants, replicate by invading ______ cells.
host
01
Virus classification criteria
Based on nucleic acid type, capsid symmetry, envelope presence, size, replication mode.
02
Virus family name suffix
Families end with -viridae, indicating a group with shared traits.
