Viruses Flashcards
Taxonomists primarily use ______ (appearance) to describe new species.
morphology
When naming a new species we use a system called the _____ ______.
Linnaean Scheme
Who developed the Taxonomic Hierarchy in the mid-1700’s?
Karl Von Linne
The 6 Kingdoms of Life:
Eubacteria, Archaebacteria, Protista, Fungi, Plantae, Animalia
3 Domains of LIfe:
Bacteria, Archaea, Eukaryotes
What characteristics do viruses lack compared to living organisms?
- They can’t make copies of themselves
- The can’t produce their own energy
Viruses are grouped by what 4 things?
- Shape
- What organism they infect
- What disease they cause
- Whether they have DNA or RNA
The Virus Structure: It possess an inner core of ___ or ___, plus a few proteins.
DNA & RNA
Surrounding the core is a ____ of protein.
capsid
OUtside the capsid may be a(n) ____
envelope
Many viruses also have _____ sticking out through the capsid and/or envelope.
proteins
In the ___ ___, viral replication leads to immediate cell death.
lytic cycle
In the ___ ___, cell does not immediately die.
lysogenic cycle
How did viruses arise? Hypothesis 1:
They were once true cells, that lost the ability to self-replicate
How did viruses arise? Hypothesis 2:
They evolved alongside cells from self-replicating molecules (RNA , PNA)
