Bio Lab 1- Archea & Bacteria Flashcards

0
Q

Extremophile

A

Thermophile: heat loving
Halophile: salt loving
Methanogens: produces methane
Acidophile: low pH

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1
Q

Archaebacteria

A

Domain archaea
Kingdom archaeabacteria
Most often extremophiles

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2
Q

BacteriA

A
Domain bacteria
Kingdom bacteria
Prokaryotes
Metabolically diverse
3 main shapes
Most abundant life on earth
Been around 3.5 billion years
Reproduce thru binary fission
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3
Q

Prokaryote characteristics

A

Few membrane bound organelles
Circular chromosomes
Before nucleus
Smaller because less complex

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4
Q

Bacterial shapes

A

Bacillus- rod
Coccus- spherical
Sprillium- spiral

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5
Q

Bacterial metabolism

A

Heterotrophic- gets energy from outside sources. Can be aerobic or inaerobic
Autotrophic- self producing - photosynthetic
Lithoautotrophic- gets energy from soil

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6
Q

Gram stain

A

Used to identify bacteria
Gram positive: thick outer peptidoglycan wall
Gram negative: outer membrane, then thinner peptidoglycan wall

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7
Q

Natural selection requirements

A

Variability in the species
Variability is inherited by future generations
Variability directly affects mortality
Note: change in allele frequency = evolution

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