Chapter 9 Flashcards
Bacteria
Unicellular,but some stick together in colonies
Prokaryotic
Lack membranes bound internal structures , no vacuoles, mitochondria or chloroplasts
Single chromosomes in the form of a loop
Reproduce asexually by binary fission
What is a virus
Lifeless particles that carries out no metabolic functions on its own , and cannot reproduce on its own
But… Capable of reproduction once it invades
Occupy a position between living and no living matter
Viral replication
LYTIC CYCLE
- Process by which virus and its genetic material are duplicated before cell division
LYSOGENIC CYCLE
- Dormant phase of the virus
-virus coexist with cell
- Instead of hijacking cell and taking control, it’d nucleic acid becomes integrated into bacteriums DNA
What is taxonomy
The science of classifying organisms, called taxonomy
kingdom Archaebacteria
- Primitive organisms
- Thrive under extreme conditions
- Many live without oxygen
- Prokaryotic
- Heterotrophs
Archaebacteria
1) Thermophiles:
- Live in extremely hot environments
2) Methanogens
- Grow on CO2 and hydrogen gas to produce methane
- Found in volcanic deep sea environments, intestines of mammals
3) Halophiles
- Live in extremely saline environments
- Found in salt flats, evaporation
Antibiotics
Chemicals produced synthetically or by microorganism that inhibit the growth of or destroy certain other microorganism
Binomial nomenclature
A method of naming organism by using two names the genus and the species name
Cyst
Cells that have a hardened protective covering on top of the cell membrane
Capsid
The protective protein coat of viruses
The 6 kingdoms
Animalia Plantae Protista Fungi Eubacteria Archaebacteria
3 domains
Eukaryotic
Bacteria
Archaea
Order of classification
Domain Kingdom Phylum Class Order Family Genus Species
Why are viruses nonliving
Because they can’t survive on their own because they require a living organism to carry out all life functions
How are viruses like cellular organism? How are they different
Similar: because they can’t reproduce on its own
Different: they require a different organism to reproduce
